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Yoon Y, Aziz AA, Chang IS, Kim B. Prevalence of Escherichia coli in electrogenic biofilm on activated carbon in microbial fuel cell. Appl Microbiol Biotechnol 2024; 108:52. [PMID: 38183478 DOI: 10.1007/s00253-023-12829-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 10/11/2023] [Accepted: 11/04/2023] [Indexed: 01/08/2024]
Abstract
For a better understanding of the distribution of depth-dependent electrochemically active bacteria at in the anode zone, a customized system in a microbial fuel cell (MFC) packed with granular activated carbon (GAC) was developed and subsequently optimized via electrochemical tests. The constructed MFC system was sequentially operated using two types of matrice solutions: artificially controlled compositions (i.e., artificial wastewater, AW) and solutions obtained directly from actual sewage-treating municipal plants (i.e., municipal wastewater, MW). Notably, significant difference(s) of system efficiencies between AW or MW matrices were observed via performance tests, in that the electricity production capacity under MW matrices is < 25% that of the AW matrices. Interestingly, species of Escherichia coli (E. coli) sampled from the GAC bed (P1: deeper region in GAC bed, P2: shallow region of GAC near electrolytes) exhibited an average relative abundance of 75 to 90% in AW and a relative abundance of approximately 10% in MW, while a lower relative abundance of E. coli was found in both the AW and MW anolyte samples (L). Moreover, similar bacterial communities were identified in samples P1 and P2 for both the AW and MW solutions, indicating a comparable distribution of bacterial communities over the anode area. These results provide new insights into E. coli contribution in power production for the GAC-packed MFC systems (i.e., despite the low contents of Geobacter (> 8%) and Shewanella (> 1%)) for future applications in sustainable energy research. KEY POINTS: • A microbial community analysis for depth-dependence in biofilm was developed. • The system was operated with two matrices; electrochemical performance was assessed. • E. coli spp. was distinctly found in anode zone layers composed of activated carbon.
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Affiliation(s)
- Younggun Yoon
- SELS Center, Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea
| | - Azilah Abd Aziz
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-Ro, Buk-Gu, Gwangju, 61005, South Korea
| | - In Seop Chang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-Ro, Buk-Gu, Gwangju, 61005, South Korea.
| | - Bongkyu Kim
- SELS Center, Division of Biotechnology, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea.
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Shi Y, Liu Q, Wu G, Zhao S, Li Y, You S, Huang G. Removal and reduction mechanism of Cr (VI) in Leersia hexandra Swartz constructed wetland-microbial fuel cell coupling system. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 277:116373. [PMID: 38653023 DOI: 10.1016/j.ecoenv.2024.116373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 03/29/2024] [Accepted: 04/20/2024] [Indexed: 04/25/2024]
Abstract
Cr (VI) is extremely harmful to both the environment and human health, and it can linger in the environment for a very long period. In this research, the Leersia hexandra Swartz constructed wetland-microbial fuel cell (CW-MFC) system was constructed to purify Cr (VI) wastewater. By comparing with the constructed wetland (CW) system, the system electricity generation, pollutants removal, Cr enrichment, and morphological transformation of the system were discussed. The results demonstrated that the L. hexandra CW-MFC system promoted removal of pollutants and production of electricity of the system. The maximum voltage of the system was 499 mV, the COD and Cr (VI) removal efficiency was 93.73% and 97.00%. At the same time, it enhanced the substrate and L. hexandra ability to absorb Cr and change it morphologically transformation. Additionally, the results of XPS and XANES showed that the majority of the Cr in the L. hexandra and substrate was present as Cr (III). In the L. hexandra CW-MFC system, Geobacter also functioned as the primary metal catabolic reducing and electrogenic bacteria. As a result, L. hexandra CW-MFC system possesses the added benefit of removing Cr (VI) while producing energy compared to the traditional CW system.
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Affiliation(s)
- Yucui Shi
- School of Chemical Engineering and Environment, Weifang University of Science and Technology, Weifang 262700, China; Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang 262700, China; Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse, Weifang 262700, China
| | - Qing Liu
- School of Chemical Engineering and Environment, Weifang University of Science and Technology, Weifang 262700, China; Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang 262700, China; Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse, Weifang 262700, China
| | - Guowei Wu
- Shouguang Hospital of Traditional Chinese Medicine, Weifang 262700, China
| | - Shasha Zhao
- School of Chemical Engineering and Environment, Weifang University of Science and Technology, Weifang 262700, China; Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang 262700, China; Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse, Weifang 262700, China
| | - Yongwei Li
- School of Chemical Engineering and Environment, Weifang University of Science and Technology, Weifang 262700, China; Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang 262700, China
| | - Shaohong You
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology of Guilin University of Technology, Guilin 541004, China.
| | - Guofu Huang
- School of Chemical Engineering and Environment, Weifang University of Science and Technology, Weifang 262700, China; Shandong Engineering Research Center of Green and High-value Marine Fine Chemical, Weifang 262700, China; Weifang Key Laboratory of Chemical Wastewater Pollution Control and Resource Reuse, Weifang 262700, China.
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Li D, Zhao Y, Wei D, Tang C, Wei T. Key issues to consider toward an efficient constructed wetland-microbial fuel cell: the idea and the reality. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11559-11575. [PMID: 38225491 DOI: 10.1007/s11356-024-31984-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024]
Abstract
The research on constructed wetland (CW) and microbial fuel cell (MFC) has been separate studies worldwide with crucial achievements being made in both fields. Due to environmentally friendly feature (of CW) and rich microbial population and excellent electrode catalytic activity (of MFC), CW and MFC have their own anticipated application prospect in wastewater purification and biological electricity generation. More significantly, the idea of embedding MFC into CW to form CW-MFC expands the scope for both of them and this has received much interest in recent years due to its striking features of sewage treatment efficiency, electricity generation, sustainability, and environmental friendliness. The increasing interest and the lack of soul of CW-MFC emerging to the new researchers reflect the need to recall the idea and summarize its development with regard to achieving its reality via some key issues This forms the basis of the paper. The paper also includes how to enhance the efficiency of electricity generation and supplement energy consumption, the degradation of emerging pollutants, and the degradation mechanism as well as the potential joint application of CW-MFC with other treatment technique. A mass of CW-MFC design parameters has been synthesized from the literature. Challenges and potential directions of CW-MFC in the future are prospected. It is expected that the paper can serve as a linkage for bridging knowledge gaps for further studies of CW-MFC.
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Affiliation(s)
- Diaodiao Li
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
| | - Dan Wei
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Cheng Tang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Ting Wei
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Municipal and Engineering, School of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Madrid, Spain
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González T, Miranda JP, Gómez G, Puigagut J, Vidal G. Saturated constructed wetland-microbial fuel cell system and effect on dissolved oxygen gradient, electricity generation and ammonium removal. ENVIRONMENTAL TECHNOLOGY 2024; 45:624-638. [PMID: 36101485 DOI: 10.1080/09593330.2022.2119170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The aim of this work was to assess effect of saturated constructed wetland-Microbial fuel cell system on dissolved oxygen gradient, electricity generation and ammonium removal. Two laboratory-scale systems, one planted with Schoenoplectus californicus (SCW1-MFC) and other without plant (SCW2-MFC), were fed discontinuously with synthetic wastewater over 90 days. Both systems were operated at different organic loading rate (12 and 28 g COD/m2d) and ammonium loading rate (1.6 and 3.0 g NH4+- N/m2 d) under open circuit and close circuit mode. The results indicate that between lower and upper zones of wetlands the average values were in the range of 1.22 ± 0.32 to 1.39 ± 0.27 mg O2/L in SCW1-MFC and 1.28 ± 0.24 to 1.56 ± 0.31 mg O2/L in SCW2-MFC. The effect of operating mode (closed and open circuit) and vegetation on DO was not significant (p > 0.05). Chemical oxygen demand (COD) removal efficiencies, fluctuated between 90 and 95% in the SCW1-MFC and 82 and 94% in the SCW2-MFC system. Regarding NH4+- N, removal efficiencies were above 85% in both systems reaching values maximus 98%. The maximum power density generated was 4 and 10 mW/m2 in SCW1-MFC, while SCW2-MFC recorded the highest values (12 and 22 mW/m2).
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Affiliation(s)
- Thais González
- Engineering and Biotechnology Environmental Group (GIBA-UDEC), Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomás, Chile
| | - Juan Pablo Miranda
- Engineering and Biotechnology Environmental Group (GIBA-UDEC), Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile
| | - Gloria Gómez
- Engineering and Biotechnology Environmental Group (GIBA-UDEC), Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile
| | - Jaume Puigagut
- Group of Environmental Engineering and Microbiology (GEMMA), Universitat Politècnica de Catalunya - BarcelonaTech, Catalonia, Spain
| | - Gladys Vidal
- Engineering and Biotechnology Environmental Group (GIBA-UDEC), Environmental Science Faculty & Center EULA-Chile, University of Concepción, Concepción, Chile
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Abadikhah M, Liu M, Persson F, Wilén BM, Farewell A, Sun J, Modin O. Effect of anode material and dispersal limitation on the performance and biofilm community in microbial electrolysis cells. Biofilm 2023; 6:100161. [PMID: 37859795 PMCID: PMC10582064 DOI: 10.1016/j.bioflm.2023.100161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/05/2023] [Accepted: 10/08/2023] [Indexed: 10/21/2023] Open
Abstract
In a microbial electrolysis cell (MEC), the oxidization of organic compounds is facilitated by an electrogenic biofilm on the anode surface. The biofilm community composition determines the function of the system. Both deterministic and stochastic factors affect the community, but the relative importance of different factors is poorly understood. Anode material is a deterministic factor as materials with different properties may select for different microorganisms. Ecological drift is a stochastic factor, which is amplified by dispersal limitation between communities. Here, we compared the effects of three anode materials (graphene, carbon cloth, and nickel) with the effect of dispersal limitation on the function and biofilm community assembly. Twelve MECs were operated for 56 days in four hydraulically connected loops and shotgun metagenomic sequencing was used to analyse the microbial community composition on the anode surfaces at the end of the experiment. The anode material was the most important factor affecting the performance of the MECs, explaining 54-80 % of the variance observed in peak current density, total electric charge generation, and start-up lag time, while dispersal limitation explained 10-16 % of the variance. Carbon cloth anodes had the highest current generation and shortest lag time. However, dispersal limitation was the most important factor affecting microbial community structure, explaining 61-98 % of the variance in community diversity, evenness, and the relative abundance of the most abundant taxa, while anode material explained 0-20 % of the variance. The biofilms contained nine Desulfobacterota metagenome-assembled genomes (MAGs), which made up 64-89 % of the communities and were likely responsible for electricity generation in the MECs. Different MAGs dominated in different MECs. Particularly two different genotypes related to Geobacter benzoatilyticus competed for dominance on the anodes and reached relative abundances up to 83 %. The winning genotype was the same in all MECs that were hydraulically connected irrespective of anode material used.
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Affiliation(s)
- Marie Abadikhah
- Water Environment Technology, Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Ming Liu
- Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
| | - Frank Persson
- Water Environment Technology, Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Britt-Marie Wilén
- Water Environment Technology, Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Anne Farewell
- Chemistry and Molecular Biology, University of Gothenburg, Sweden
| | - Jie Sun
- College of Physics and Information Engineering, Fuzhou University, and Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350100, China
- Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, Sweden
| | - Oskar Modin
- Water Environment Technology, Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
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6
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Li J, Feng Y, Qiu Y, Chen D, Liang D, Zhou J, Liu G. Recovery of electron and carbon source from agricultural waste corncob by microbial electrochemical system to enhance wastewater denitrification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:162926. [PMID: 36933715 DOI: 10.1016/j.scitotenv.2023.162926] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/28/2023] [Accepted: 03/13/2023] [Indexed: 05/13/2023]
Abstract
The denitrification process in wastewater treatment plants (WWTPs) is limited by insufficient carbon sources. Agricultural waste corncob was investigated for its feasibility as a low-cost carbon source for efficient denitrification. The results showed that the corncob as the carbon source exhibited a similar denitrification rate (19.01 ± 0.03 gNO3--N/m3d) to that of the traditional carbon source sodium acetate (19.13 ± 0.37 gNO3--N/m3d). When filling corncob into a microbial electrochemical system (MES) three-dimensional anode, the release of corncob carbon sources was well controlled with an improved denitrification rate (20.73 ± 0.20 gNO3--N/m3d). Carbon source and electron recovered from corncob led to autotrophic denitrification and heterotrophic denitrification occurred in the MES cathode, which synergistically improved the denitrification performance of the system. The proposed strategy for enhanced nitrogen removal by autotrophic coupled with heterotrophic denitrification using agricultural waste corncob as the sole carbon source opened up an attractive route for low-cost and safe deep nitrogen removal in WWTPs and resource utilization for agricultural waste corncob.
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Affiliation(s)
- Jiannan Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Yujie Feng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Ye Qiu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Dahong Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Dandan Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Jiajie Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China
| | - Guohong Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology. Harbin 150090, China.
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Vo NXP, Dang Nguyen Hoang D, Doan Huu T, Doan Van T, Lam Pham Thanh H, Vo Nguyen Xuan Q. Performance of vertical up-flow-constructed wetlands integrating with microbial fuel cell (VFCW-MFC) treating ammonium in domestic wastewater. ENVIRONMENTAL TECHNOLOGY 2023; 44:1822-1837. [PMID: 34859740 DOI: 10.1080/09593330.2021.2014574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Vertical up-flow-constructed wetlands integrating with microbial fuel cell (VFCW-MFC) were evaluated for NH4+-N removal and bioelectricity recovery. The experiments were carried out in lab-scale VFCW-MFC microcosms treating synthetic domestic wastewater under different operational conditions of pH, hydraulic retention time, and mass loading rate. Effects of wild ornamental grass (Cenchrus setaceus) on treatment performance and voltage output were investigated simultaneously. Experiments demonstrated that the neutral pH of influents favoured NH4+-N removal and power generation. Extended retention time improved treatment capacity and power output but likely depended on the substrate availability. COD removal and power output increased, while NH4+-N removal decreased with increasing mass loading rates. At the loading rate of 88.31 mg COD/L.day, planted VFCW-MFCs exhibited better NH4+-N treatment performance (36.9%) and higher voltage output (132%-143%) than unplanted systems. Plants did not affect the COD removal efficiency of VFCW-MFCs (>95%). Power density was in the range of 1.26-1.59 mW/m2 in planted microcosms with a maximum CE of 13.6%. The anode layer accounted for a major proportion of NH4+-N removal in VFCW-MFCs. This study implies that NH4+-N in domestic wastewaters with relatively high COD:N ratios can be treated effectively in up-flow CW-MFCs via anaerobic processes, including anammox and heterotrophic denitrifying processes. The mass loading rate could be a critical parameter to balance different microbial processes, thus, coincidently determining the potential of power recovery from wastewaters.
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Affiliation(s)
| | - Dat Dang Nguyen Hoang
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuy Doan Huu
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | | | - Hien Lam Pham Thanh
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Que Vo Nguyen Xuan
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
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Zhang K, Wu X, Wang W, Luo H, Chen W, Chen J. Effects of the bioelectrochemical technique on methane emission and energy recovery in constructed wetlands (CWs) and related biological mechanisms. ENVIRONMENTAL TECHNOLOGY 2023; 44:540-551. [PMID: 34542386 DOI: 10.1080/09593330.2021.1976846] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
In this study, effects of bioelectrochemical technique on methane emission and energy recovery, and related mechanism underlying microbial competition were investigated. The results showed that running MFC was beneficial in reducing CH4 emissions and promoting COD removal rates, regardless of whether the plant roots were located at the anode or the cathode. CH4 emission was significantly higher in open-circuit reactors (6.2 mg m-2 h-1) than in closed-circuit reactors (3.1 mg m-2 h-1). Plant roots at the cathode had the highest electricity generation and the lowest CH4 emissions. The highest power generation (0.49 V, 0.33 w m-3) and the lowest CH4 emissions (2.3 mg m-2 h-1) were observed in the reactors where Typha orientalis was planted with plant roots at the cathode. The role of plants in strengthening electron acceptor was greater than that of plant rhizodeposits in strengthening electron donors. Real-time quantitative PCR (q-PCR) and correlation analysis indicated that the mcrA genes and CH4 emissions were positively correlated (r = 0.98, p < 0.01), while no significant relationship between CH4 emissions and pmoA genes was observed. Illumina sequencing revealed that more abundant exoelectrogens and denitrifying bacteria were observed when plant roots were located in cathodes. Strictly acetotrophic archae (Methanosaetaceae) were likely the main electron donor competitors with exoelectrogens. The results showed that the location of both plant species and plant roots at the electrode played an important role in CH4 control and electricity generation. Therefore, it is necessary to strengthen plant configuration to reduce CH4 emissions, to promote sustainable development of wastewater treatment.
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Affiliation(s)
- Ke Zhang
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, People's Republic of China
| | - Xiangling Wu
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, People's Republic of China
| | - Wei Wang
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Hongbing Luo
- School of Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, People's Republic of China
| | - Jia Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, People's Republic of China
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Wang S, Zuo Z, Wang Q, Zhou A, Wang G, Xu G, Zou J. Replacing starch with resistant starch (Laminaria japonica) improves water quality, nitrogen and phosphorus budget and microbial community in hybrid snakehead (Channa maculata ♀ × Channa argus ♂). WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2023; 95:e10836. [PMID: 36744448 DOI: 10.1002/wer.10836] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/30/2022] [Accepted: 01/07/2023] [Indexed: 06/18/2023]
Abstract
It is essential to increase the use of carbohydrates as an energy source and improve protein synthesis and utilization to reduce ammonia nitrogen emissions. A 60-day cultural experiment was conducted to assess the impact of resistant starch (kelp meal, Laminaria japonica) replacing starch on water quality, nitrogen and phosphorus budget and microbial community of hybrid snakehead. Approximately 1350 experimental fish (11.4 ± 0.15 g) were randomly divided into control group (C, 20% starch) and four resistant starch groups: low replacement group (LR, 15% starch), medium replacement group (MR, 10% starch), high replacement group (HR, 5% starch) and full replacement group (FR, 0% starch). The crude protein and crude fat content of hybrid snakehead fish fed with the FR diet had the most significant improvement (P < 0.05). However, resistant starch also increased the effectiveness of nitrogen and phosphorus utilization in hybrid snakeheads, which decreased the proportion of total nitrogen and total phosphorus in tail water. The minimum nitrogen and phosphorus emission rate was when the starch level was 6.1%. Denitrifying microbes including Gemmobacter, Rhodobacter, Emticicia and Bosea have become much more prevalent in group FR (P < 0.05). In general, replacing starch with resistant starch can enhance the rate at which nitrogen and phosphorus are used in feeding, lessening water pollution and altering environmental microbial composition. PRACTITIONER POINTS: Resistant starch (RS) improves whole fish nutritional content. Resistant starch improves dietary nitrogen and phosphorus utilization. Resistant starch acts as a carbon source and encourages the colonization of denitrifying bacteria in water.
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Affiliation(s)
- Shaodan Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Zhiheng Zuo
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Qiujie Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Aiguo Zhou
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Guiqin Wang
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Key Laboratory of Animal Production, Product Quality and Security, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agriculture University, Changchun, China
| | - Guohuan Xu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Jixing Zou
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
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10
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Abadikhah M, Rodriguez MDC, Persson F, Wilén BM, Farewell A, Modin O. Evidence of competition between electrogens shaping electroactive microbial communities in microbial electrolysis cells. Front Microbiol 2022; 13:959211. [PMID: 36590422 PMCID: PMC9800620 DOI: 10.3389/fmicb.2022.959211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
In single-chamber microbial electrolysis cells (MECs), organic compounds are oxidized at the anode, liberating electrons that are used for hydrogen evolution at the cathode. Microbial communities on the anode and cathode surfaces and in the bulk liquid determine the function of the MEC. The communities are complex, and their assembly processes are poorly understood. We investigated MEC performance and community composition in nine MECs with a carbon cloth anode and a cathode of carbon nanoparticles, titanium, or stainless steel. Differences in lag time during the startup of replicate MECs suggested that the initial colonization by electrogenic bacteria was stochastic. A network analysis revealed negative correlations between different putatively electrogenic Deltaproteobacteria on the anode. Proximity to the conductive anode surface is important for electrogens, so the competition for space could explain the observed negative correlations. The cathode communities were dominated by hydrogen-utilizing taxa such as Methanobacterium and had a much lower proportion of negative correlations than the anodes. This could be explained by the diffusion of hydrogen throughout the cathode biofilms, reducing the need to compete for space.
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Affiliation(s)
- Marie Abadikhah
- Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden,*Correspondence: Marie Abadikhah, ✉
| | - Miguel de Celis Rodriguez
- Department of Genetics, Physiology and Microbiology, Complutense University of Madrid, Madrid, Spain
| | - Frank Persson
- Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Britt-Marie Wilén
- Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Anne Farewell
- Institute of Chemistry and Molecular Biology and the Center for Antibiotic Resistance Research, University of Gothenburg, Gothenburg, Sweden
| | - Oskar Modin
- Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Gothenburg, Sweden
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Du J, Niu Y, Wu H, Konnerup D, Wu S, Ramírez-Vargas CA, Yang Y, Brix H, Arias CA. Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings. CHEMOSPHERE 2022; 307:135828. [PMID: 35944690 DOI: 10.1016/j.chemosphere.2022.135828] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/19/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Biofilter systems coupling with microbial electrochemical technology can enhance the removal performance of pollutants. In this study, two types of coke (PK-A and PK-LSN) were used as electroconductive substrates in biofilter systems with silicone tubings. The results showed that the silicone tubings were beneficial for removing NH4+-N. The PK-A systems reached removal efficiencies up to 83.5-85.3% for NH4+-N without aeration. Compared to gravel systems, significantly higher removal efficiencies of NO3--N (84.8-95.4%) were obtained in coke systems, and better removal of PO43--P (91.9-95.7%) was also simultaneously achieved in PK-A systems. Redundancy analysis (RDA) indicated that the better performances of coke systems rely on the functions of both electroactive (Trichococcus and Sulfurovum) and non-electroactive bacteria (Clostridium_sensu_stricto_1, Propionicicella, and Acinetobacter). These findings highlight the important contribution of silicone tubings to oxygen supply and provide useful guidance for the application of coke in composite matrix systems.
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Affiliation(s)
- Jingjing Du
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Department of Biology, Aarhus University, Aarhus, Denmark; Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, China.
| | - Yulong Niu
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Haiming Wu
- Department of Biology, Aarhus University, Aarhus, Denmark; School of Environmental Science & Engineering, Shandong University, Qingdao, China
| | - Dennis Konnerup
- Department of Food Science, Aarhus University, Aarhus, Denmark
| | - Shubiao Wu
- Department of Agroecology, Aarhus University, Tjele, Denmark
| | - Carlos A Ramírez-Vargas
- Department of Biology, Aarhus University, Aarhus, Denmark; Aarhus University Centre for Water Technology (WATEC), Aarhus University, Aarhus, Denmark
| | - Yanqin Yang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, China
| | - Hans Brix
- Department of Biology, Aarhus University, Aarhus, Denmark; Aarhus University Centre for Water Technology (WATEC), Aarhus University, Aarhus, Denmark
| | - Carlos A Arias
- Department of Biology, Aarhus University, Aarhus, Denmark; Aarhus University Centre for Water Technology (WATEC), Aarhus University, Aarhus, Denmark
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Tao Z, Jing Z, Tao M, Chen R. Recycled utilization of ryegrass litter in constructed wetland coupled microbial fuel cell for carbon-limited wastewater treatment. CHEMOSPHERE 2022; 302:134882. [PMID: 35551945 DOI: 10.1016/j.chemosphere.2022.134882] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/22/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
To solve wetland plant litter disposal and improve the nitrogen removal of carbon-limited wastewater, the integration of microbial fuel cell (MFC) and recycled utilization of ryegrass litter planted in constructed wetland (CW) may be effective. CW and MFC-CW with periodical ryegrass litter addition (10 days one cycle) were constructed to study the effects of ryegrass litter on nitrogen removal, electricity production and microorganism community. The results showed that total nitrogen removal of CW and MFC-CW after ryegrass litter addition reached 80.54 ± 10.99% and 81.94 ± 7.30%, increased by 22.19% and 17.50%, respectively. Three-dimensional excitation emission matrix fluorescence spectroscopy results revealed that the soluble organic matters produced by the hydrolyzed ryegrass litter were mainly tryptophan, tyrosine and fulvic acid, which promoted the growth of microorganisms and denitrification. The dosage of 200 g m-2 did not cause the rise of refractory organic matter in the effluent. The ryegrass litter addition promoted the average voltage and power density slightly in MFC-CW, but the internal resistance also increased temporarily. Compared to the sole CW, current stimulation caused by MFC not only helped to increase the denitrification, but also accelerated the biomass hydrolysis. MFC could contribute to the enrichment and growth of functional microorganisms related to denitrification and organic degradation, such as Vogesella, Devosia, Thermomonas and Brevibacterium. The bacterial genera involved in the ryegrass litter degradation were mainly Thermomonas, Propionicimonas, TM7a, Clostridium_sensu_stricto_1 and so on. This study provided a promising way for practical applications of MFC-CW in the treatment of carbon-limited wastewater, especially in small ecological facilities.
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Affiliation(s)
- Zhengkai Tao
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Zhaoqian Jing
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Mengni Tao
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Renjie Chen
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
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Sun L, Mo Y, Zhang L. A mini review on bio-electrochemical systems for the treatment of azo dye wastewater: State-of-the-art and future prospects. CHEMOSPHERE 2022; 294:133801. [PMID: 35104551 DOI: 10.1016/j.chemosphere.2022.133801] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 12/17/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Azo dyes are typical toxic and refractory organic pollutants widely used in the textile industry. Bio-electrochemical systems (BESs) have great potential for the treatment of azo dyes with the help of microorganisms as biocatalysts and have advanced significantly in recent years. However, the latest and significant advancement and achievements of BESs treating azo dyes have not been reviewed since 8 years ago. This review thus focuses on the recent investigations of BESs treating azo dyes from the year of 2013-2020 in order to broaden the knowledge and deepen the understanding in this field. In this review, azo dyes degradation mechanisms of BESs are first elaborated, followed by the introduction of BES configurations with the emphasis on the novelties. The azo dye degradation performance of BESs is then presented to demonstrate their effectiveness in azo dye removal. Effects of various operating parameters on the overall performance of BESs are comprehensively elucidated, including electrode materials, external resistances and applied potentials, initial concentrations of azo dyes, and co-substrates. Predominant microorganisms responsible for degradation of azo dyes in BESs are highlighted in details. Furthermore, the combination of BESs with other processes to further improve the azo dye removal are discussed. Finally, an outlook on the future research directions and challenges is provided from the viewpoint of realistic applications of the technology.
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Affiliation(s)
- Liping Sun
- State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Membrane Science and Technology, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Yinghui Mo
- State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Membrane Science and Technology, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China.
| | - Lu Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Membrane Science and Technology, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
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Ji B, Zhao Y, Yang Y, Tang C, Dai Y, Zhang X, Tai Y, Tao R, Ruan W. Insight into the performance discrepancy of GAC and CAC as air-cathode materials in constructed wetland-microbial fuel cell system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:152078. [PMID: 34863746 DOI: 10.1016/j.scitotenv.2021.152078] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Constructed wetland-microbial fuel cell (CW-MFC) has exhibited the performance discrepancy between using granular activated carbon (GAC) and columnar activated carbon (CAC) as air-cathode materials. No doubt, this is linked with electrochemical performance and decontaminants characteristics in the CW-MFC system. To provide insight into this performance discrepancy, three CW-MFCs were designed with different carbon-material to construct varied shapes of air-cathodes. The results showed that the ring-shaped cathode filled with GAC yielded a highest voltage of 458 mV with maximum power density of 13.71 mW m-2 and >90% COD removal in the CW-MFC system. The electrochemical characteristics and the electron transport system activity (ETSA) are the driven force to bring the GAC a better electron transportation and oxygen reduction reaction (ORR). This will help elucidating underlying mechanisms of different activated carbon for air-cathode and thus promote its large application.
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Affiliation(s)
- Bin Ji
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China; Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Yang Yang
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China.
| | - Cheng Tang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China; Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yunyu Dai
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China
| | - Xiaomeng Zhang
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China
| | - Yiping Tai
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China
| | - Ran Tao
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China
| | - Weifeng Ruan
- Department of Ecology, Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, PR China
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16
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Mier AA, Olvera-Vargas H, Mejía-López M, Longoria A, Verea L, Sebastian PJ, Arias DM. A review of recent advances in electrode materials for emerging bioelectrochemical systems: From biofilm-bearing anodes to specialized cathodes. CHEMOSPHERE 2021; 283:131138. [PMID: 34146871 DOI: 10.1016/j.chemosphere.2021.131138] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/27/2021] [Accepted: 06/04/2021] [Indexed: 06/12/2023]
Abstract
Bioelectrochemical systems (BES), mainly microbial fuel cells (MEC) and microbial electrolysis cells (MFC), are unique biosystems that use electroactive bacteria (EAB) to produce electrons in the form of electric energy for different applications. BES have attracted increasing attention as a sustainable, low-cost, and neutral-carbon option for energy production, wastewater treatment, and biosynthesis. Complex interactions between EAB and the electrode materials play a crucial role in system performance and scalability. The electron transfer processes from the EAB to the anode surface or from the cathode surface to the EAB have been the object of numerous investigations in BES, and the development of new materials to maximize energy production and overall performance has been a hot topic in the last years. The present review paper discusses the advances on innovative electrode materials for emerging BES, which include MEC coupled to anaerobic digestion (MEC-AD), Microbial Desalination Cells (MDC), plant-MFC (P-MFC), constructed wetlands-MFC (CW-MFC), and microbial electro-Fenton (BEF). Detailed insights on innovative electrode modification strategies to improve the electrode transfer kinetics on each emerging BES are provided. The effect of materials on microbial population is also discussed in this review. Furthermore, the challenges and opportunities for materials scientists and engineers working in BES are presented at the end of this work aiming at scaling up and industrialization of such versatile systems.
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Affiliation(s)
- Alicia A Mier
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - Hugo Olvera-Vargas
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - M Mejía-López
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - Adriana Longoria
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - Laura Verea
- Instituto de Investigación e Innovación en Energías Renovables, Universidad de Ciencias y Artes de Chiapas, Libramiento Norte Poniente 1150, 29039, Tuxtla Gutiérrez, Chiapas, Mexico
| | - P J Sebastian
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - Dulce María Arias
- Bioenergy Lab, Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico.
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17
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Zhang K, Wu X, Chen J, Wang W, Luo H, Chen W, Ma D, An X, Wei Z. The role and related microbial processes of Mn-dependent anaerobic methane oxidation in reducing methane emissions from constructed wetland-microbial fuel cell. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 294:112935. [PMID: 34119986 DOI: 10.1016/j.jenvman.2021.112935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/26/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Anaerobic oxidation of methane (AOM) plays an important role in global carbon cycle and greenhouse gas emission reduction. In this study, an effective green technology to reduce methane emissions was proposed by introducing Mn-dependent anaerobic oxidation of methane (Mn-AOM) and microbial fuel cell (MFC) technology into constructed wetland (CW). The results indicate that the combination of biological methods and bioelectrochemical methods can more effectively control the methane emission from CW than the reported methods. The role of dissimilated metal reduction in methane control in CW and the biochemical process associated with Mn-AOM were also investigated. The results demonstrated that using Mn ore as the matrix and operating MFC effectively reduced methane emissions from CW, and higher COD removal rate was obtained in CW-MFC (Mn) during the 200 days of operation. Methane emission from CW-MFC (Mn) (53.76 mg/m2/h) was 55.61% lower than that of CW (121.12 mg/m2/h). The highest COD removal rate (99.85%) in CW-MFC (Mn) was obtained. As the dissimilative metal-reducing microorganisms, Geobacter (5.10%) was found enriched in CW-MFC (Mn). The results also showed that the presence of Mn ore was beneficial to the biodiversity of CW-MFCs and the growth of electrochemically active bacteria (EAB) including Proteobacteria (35.32%), Actinobacteria (2.38%) and Acidobacteria (2.06%), while the growth of hydrogenotrophic methanogens Methanobacterium was effectively inhibited. This study proposed an effective way to reduce methane from CW. It also provided reference for low carbon technology of wastewater treatment.
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Affiliation(s)
- Ke Zhang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China; School of Environment, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, PR China.
| | - Xiangling Wu
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Jia Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Wei Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, PR China
| | - Hongbing Luo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Dandan Ma
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Xiaochan An
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Zhaolan Wei
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
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Lu H, Xiao L, Wang T, Lu S, Wang H, Guo X, Li J. The application of steel slag in a multistage pond constructed wetland to purify low-phosphorus polluted river water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112578. [PMID: 33965685 DOI: 10.1016/j.jenvman.2021.112578] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 03/21/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
To investigate the effect of a constructed wetland (CW) with steel slag as the filler on water contaminated by low phosphorus levels, a multistage pond CW system was designed in this study. Low-phosphorus polluted river water was used as the research object. This study explored the effects of using steel slag as a CW filler on phosphorus removal and the total phosphorus (TP) purification effect of the wetland system. The results showed that the TP removal rates in the ecological pond, oxidation pond, surface flow wetlands and submerged plant pond were 5.17%, 8.02%, 21.56%, and 16.31%, respectively. Intermittent increases in phosphorus concentration were observed in the reactors and were caused by the decay of plant tissues, which released pollutants. Because steel slag was added to the filler, the TP concentrations in the effluent of the first- and second-level horizontal subsurface CWs increased by 151.13% and 16.29%, respectively, compared to the influent concentration. The 20th to 40th days of the test run was a period of rapid phosphorus release of the system. The use of steel slag has a potential risk of phosphorus release when applied in CWs used to purify low-phosphorus contaminated water bodies.
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Affiliation(s)
- Hongbin Lu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China; College of Water Sciences, Beijing Normal University, Beijing, 100875, PR, China
| | - Liping Xiao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266033, China
| | - Tao Wang
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China; College of Environmental Science and Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Shaoyong Lu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China.
| | - Huanhua Wang
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China
| | - Xiaochun Guo
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China
| | - Jiaxin Li
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China; School of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
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Lu H, Wang T, Lu S, Liu H, Wang H, Li C, Liu X, Guo X, Zhao X, Liu F. Performance and bacterial community dynamics of hydroponically grown Iris pseudacorus L. during the treatment of antibiotic-enriched wastewater at low/normal temperature. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:111997. [PMID: 33582416 DOI: 10.1016/j.ecoenv.2021.111997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/31/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Antibiotics are widely detected in the water environment, posing a serious threat to the health of humans and animals. The effect of levofloxacin (LOFL) on pollutant removal and the difference in the influence mechanisms at normal and low temperatures in constructed wetlands are worth discussing. A hydroponic culture experiment was designed with Iris pseudacorus L. at low and normal temperatures. LOFL (0-100 µg/L) was added to the systems. The results indicated that the removal of pollutants was affected most by temperature, followed by LOFL concentration. At the same concentration of LOFL, the pollutant removal rate was significantly higher at normal temperature than at low temperature. Low concentrations of LOFL promoted the degradation of pollutants except TN under normal-temperature conditions. Compared with the results at low temperature, the bacterial community richness was higher and the diversity of bacterial communities was lower under normal-temperature conditions. The genera and the function of bacteria were greatly affected by antibiotic concentration, temperature and test time. A series of microorganisms resistant to antibiotics and low temperature were identified in this study. The results will provide valuable information and a reference for our understanding of the ecological effects of LOFL.
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Affiliation(s)
- Hongbin Lu
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Tao Wang
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, PR China
| | - Shaoyong Lu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| | - Huaqing Liu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan 250100, PR China
| | - Huanhua Wang
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Chaojun Li
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Xiaohui Liu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Xiaochun Guo
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Xiaoliang Zhao
- College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, PR China
| | - Fuchun Liu
- College of Life Science, Cangzhou Normal University, Cangzhou 061001, PR China
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Liu L, Li N, Tao C, Zhao Y, Gao J, Huang Z, Zhang J, Gao J, Zhang J, Cai M. Nitrogen removal performance and bacterial communities in zeolite trickling filter under different influent C/N ratios. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:15909-15922. [PMID: 33242199 DOI: 10.1007/s11356-020-11776-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/19/2020] [Indexed: 06/11/2023]
Abstract
In this study, the degradation performance of nutrients in zeolite trickling filter (ZTF) with different influent C/N ratios and aeration conditions was investigated. Microaeration was beneficial for enhancing NH4+-N removal performance. Due to the sufficient carbon source supply under a C/N ratio of 8, a high removal efficiency of NH4+-N and TN was simultaneously observed in ZTF. In addition, TN removal mainly occurred at the bottom, which might be explained by the sufficient nutrients available for bacteria to multiply in this zone. The abundant genera were Acinetobacter, Gemmobacter, Flavobacterium, and Pseudomonas, all of which are heterotrophic nitrification-aerobic denitrification (HNAD) bacteria. In addition, biofilm only slowed down the adsorption rate but did not significantly reduce the adsorption capacity of zeolite. Bio-zeolite had NH4+-N well adsorption capacity and bio-desorption capacity. Biological nitrogen removal performance was superior to physicochemical absorption of zeolite. The results suggested that the physicochemical of zeolite and biochemical reactions of microorganism coupling actions may be the main nitrogen transformation pathway in ZTF. Our research provides a reference for further understanding the nitrogen removal mechanism of zeolite bioreactors.
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Affiliation(s)
- Lina Liu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Na Li
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Chunyang Tao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Yubo Zhao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Jingqing Gao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China.
- Zhengzhou Yuanzhihe Environmental Protection Technology Co., Ltd., Zhengzhou, Henan, People's Republic of China.
| | - Zhenzhen Huang
- School of Water Conservancy and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Jingshen Zhang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
- Zhengzhou Yuanzhihe Environmental Protection Technology Co., Ltd., Zhengzhou, Henan, People's Republic of China
| | - Jianlei Gao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Jinliang Zhang
- Yellow River Engineering Consulting Co., Ltd., Zhengzhou, 450003, People's Republic of China
| | - Ming Cai
- Yellow River Engineering Consulting Co., Ltd., Zhengzhou, 450003, People's Republic of China
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21
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González T, Puigagut J, Vidal G. Organic matter removal and nitrogen transformation by a constructed wetland-microbial fuel cell system with simultaneous bioelectricity generation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:142075. [PMID: 33207444 DOI: 10.1016/j.scitotenv.2020.142075] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 06/11/2023]
Abstract
Microbial fuel cells integrated into constructed wetlands have been previously studied. Nevertheless, their application as a suitable treatment for wastewater is still in the developmental stage. In this context, the aim of this study was to evaluate organic matter removal and nitrogen transformation by a microbial fuel cell integrated into a constructed wetland (CWMFC). To accomplish this, three experimental systems were operated under batch-mode conditions over 170 days: i) one was planted with Schoenoplectus californicus (P-CWMFC); ii) another was unplanted (NP-CWMFC); and iii) the third system did not have any electrodes (CW) and was used as a control. Chemical oxygen demand (COD) removal efficiency ranged between 74-87%, 69-81% and 62-72% for the P-CWMFC, NP-CWMFC and CW systems, respectively, with organic loading rates (OLR) ranging from 4.8 to 7.9 g COD/m2 d. NH4+-N removal efficiency exceeded 98%, 90% and 83% for P-CWMFC, NP-CWMFC and CW, respectively. Wastewater treatment performance was improved due to anaerobic oxidation that occurred on the anodes. Organic matter removal was 18% higher in closed-circuit mode than in open-circuit mode in both integrated systems (P-CWMFC and NP-CWMFC), and these differences were significant (p < 0.05). With respect to the performance of microbial fuel cells, the maximum power density (8.6 mW/m2) was achieved at an organic loading rate of 7.9 g COD/m2 d with an internal resistance and coulombic efficiency of 251 Ω and 2.4%, respectively. The results obtained in this work can provide positive impacts on CW development by enhancing anaerobic degradation without forced aeration.
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Affiliation(s)
- Thaís González
- Environmental Engineering & Biotechnology Group, Environmental Science Faculty & EULA-CHILE Center, Universidad de Concepción, Concepción, Chile
| | - Jaume Puigagut
- Group of Environmental Engineering and Microbiology (GEMMA), Universitat Politècnica de Catalunya - BarcelonaTech, Spain
| | - Gladys Vidal
- Environmental Engineering & Biotechnology Group, Environmental Science Faculty & EULA-CHILE Center, Universidad de Concepción, Concepción, Chile.
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Yu B, Feng L, He Y, Yang L, Xun Y. Effects of anode materials on the performance and anode microbial community of soil microbial fuel cell. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123394. [PMID: 32659585 DOI: 10.1016/j.jhazmat.2020.123394] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Five soil microbial fuel cells (SMFCs) with graphite felt, aluminium sheet, activated carbon fibre felt, graphite paper and carbon cloth as anodes were constructed using the petroleum hydrocarbon polluted soils as substrates. After 115 days of operation, the SMFC with graphite felt anode performed the best in both bioelectricity output and removal of target pollutants, with the bioelectricity output parameters of 345 mV for stable voltage, 24.0 mW/m2 for power density and 774 Ω for internal resistance, and the removal rates of 59.14 % for total petroleum hydrocarbon, 61.65 % for anthracene, and 55.92 % for pyrene, respectively. The conductivity of the material was the key factor affecting the electron transfer rate of the anode, which determined the electric acclimation and screening intensity of SMFC to soil microbes, leading to the growth and succession of the electricigens-dominanted anode microbial community with various abundances of phyla and genera. The surface structure of the anode material played a critical role in the internal resistance of SMFC through affecting the mass transfer of substrate and metabolites, and it might also change the abundance of microbes especially those non-electricigens on the community through different adhesion.
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Affiliation(s)
- Bao Yu
- Department of Environmental Sciences and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, PR China
| | - Liu Feng
- Department of Environmental Sciences and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Yali He
- Department of Environmental Sciences and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Lei Yang
- Department of Environmental Sciences and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yu Xun
- Department of Environmental Sciences and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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23
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Ji B, Zhao Y, Vymazal J, Mander Ü, Lust R, Tang C. Mapping the field of constructed wetland-microbial fuel cell: A review and bibliometric analysis. CHEMOSPHERE 2021; 262:128366. [PMID: 33182086 DOI: 10.1016/j.chemosphere.2020.128366] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/13/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
The embedding microbial fuel cell (MFC) into constructed wetlands (CW) to form CW-MFC bears the potential to obtain bioelectricity and a clean environment. In this study, a bibliometric analysis using VOSviewer based on Web of Science data was conducted to provide an overview by tracing the development footprint of this technology. The countries, institutions, authors, key terms, and keywords were tracked and corresponding mapping was generated. From 2012 to September 2020, 442 authors from 129 organizations in 26 countries published 135 publications in 42 journals with total citation of 3139 times were found. The key terms analysis showed four clusters: bioelectricity generation performance, mechanism study, refractory pollutants removal, and enhanced conventional contaminants removal. Further research themes include exploring the biochemical properties of electrochemically active bacteria, emerging contaminants removal, effective bioelectricity harvest and the use, and biosensor development as well as scaling-up for real field application. The bibliometric results provide valuable references and information on potential research directions for future studies.
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Affiliation(s)
- Bin Ji
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, PR China
| | - Yaqian Zhao
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, 710048, PR China.
| | - Jan Vymazal
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Czech Republic
| | - Ülo Mander
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014, Tartu, Estonia
| | - Rauno Lust
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014, Tartu, Estonia
| | - Cheng Tang
- School of Water and Environmental Engineering, Chang'an University, Xi'an, 710054, PR China
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Gupta S, Srivastava P, Patil SA, Yadav AK. A comprehensive review on emerging constructed wetland coupled microbial fuel cell technology: Potential applications and challenges. BIORESOURCE TECHNOLOGY 2021; 320:124376. [PMID: 33242686 DOI: 10.1016/j.biortech.2020.124376] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 05/09/2023]
Abstract
Constructed wetlands (CWs) integrated with bioelectrochemical systems (BESs) are being intensively researched with the names like constructed wetland-microbial fuel cell (CW-MFC), electro-wetlands, electroactive wetlands, and microbial electrochemical technologies-based constructed wetland since the last decade. The implantation of BES in CW facilitates the tuning of redox activities and electron flow balance in aerobic and anaerobic zones in the CW bed matrix, thereby alleviating the limitation associated with electron acceptor availability and increasing its operational controllability. The benefits of CW-MFC include high treatment efficiency, electricity generation, and recalcitrant pollutant abatement. This article presents CW-MFC technology's journey since its emergence to date, encompassing the research done so far, including the basic principle and functioning, bio-electrocatalysts as its machinery, influential factors for microbial interactions, and operational parameters controlling different processes. A few key challenges and potential applications are also discussed for the CW-MFC systems.
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Affiliation(s)
- Supriya Gupta
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Ghaziabad, India
| | - Pratiksha Srivastava
- Australian Maritime College, College of Sciences and Engineering, University of Tasmania, Launceston 7248, Australia
| | - Sunil A Patil
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS Nagar, 140306, Punjab, India
| | - Asheesh Kumar Yadav
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India.
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25
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Wang C, Wei Z, Liu R, Bai L, Jiang H, Yuan N. The sequential dewatering and drying treatment enhanced the potential favorable effect of microbial communities in drinking water treatment residue for environmental recycling. CHEMOSPHERE 2021; 262:127930. [PMID: 33182151 DOI: 10.1016/j.chemosphere.2020.127930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
The beneficial recycling of drinking water treatment residue (DWTR) for environmental remediation has received increasingly interests; whereas, the reported potential effect of microbial communities in different DWTR was ambiguous, which was unfavorable for the beneficial recycling. This study hypothesized that the varied treatment to DWTR in different waterworks induced the ambiguous effect; accordingly, responses of microbial communities in DWTR to the sequential dewatering and drying treatment were determined based on samples from three waterworks, in combination with 180-d incubation tests. The results showed that the microbial communities varied remarkably in different DWTR before being dewatered (DWTS). However, after dewatering, the increased microbial diversities were observed, and the microbial communities exhibited higher similarities among the dewatered DWTR from different waterworks; furthermore, the dewatered DWTR with subsequent drying treatment enriched more bacteria genus with potential environmental functions after incubation tests. The variations of microbial communities were closely related to DWTR properties, such as pH, organic matter, metals, P, and water extractable nutrients. Further analysis indicated that with maintaining high adsorption capability of DWTR, the dewatering treatment tended to retain specific microbial communities that may be induced by the applied similar techniques in different waterworks; the accumulated nutriments due to drying treatment and the stable DWTR pH enhanced the potential functional bacteria enrichment. Overall, the dewatering and drying treatment led to microbial communities with generality in different DWTR and increased the potential favorable microbial effect, promoting DWTR recycling in environmental remediation.
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Affiliation(s)
- Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China.
| | - Zhao Wei
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China; Graduate University of Chinese Academy of Sciences, China
| | - Rui Liu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Leilei Bai
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Helong Jiang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Nannan Yuan
- CQC New Energy Technology School, Nanjing Vocational College of Information Technology, Nanjing, China.
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26
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Prasad J, Tripathi RK. Scale-up and control the voltage of sediment microbial fuel cell for charging a cell phone. Biosens Bioelectron 2020; 172:112767. [PMID: 33126178 DOI: 10.1016/j.bios.2020.112767] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 10/01/2020] [Accepted: 10/23/2020] [Indexed: 11/17/2022]
Abstract
In this research, a power management system (PMS) has been developed to charge a cell phone battery based on sediment microbial fuel cells (SMFCs). The single SMFC produces a voltage of 1.16 V, which is too low for practical application. The voltage is increased by connecting several SMFCs in series or parallel, but the voltage reversal occurs when it is directly connected to the load. To prevent the voltage reversal, the super capacitor is first charged by the five different stack SMFCs and the charged super capacitor is used to provide the input power to a PMS. This PMS increases and regulates the input voltage of stack SMFCs up to 5.02 V for charging a cell phone battery. The charging and discharging times of the super capacitors have been investigated with five different stack SMFCs. In all five stack SMFCs, only module-5 provides power to PMS for long periods (13 min). Further, the cell phone battery is continuously charged using the two parallel-connected stack SMFCs similar to the module-5. The battery has been fully charged in 26 h using 72 SMFCs. The charged battery is used to perform for three purposes; voice calling, music playing and LED strip lighting. This study is informative for the application of SMFC in an off-grid location.
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Affiliation(s)
- Jeetendra Prasad
- Department of Electrical Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, 211004, India.
| | - Ramesh Kumar Tripathi
- Department of Electrical Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, 211004, India
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27
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Wang W, Zhang Y, Li M, Wei X, Wang Y, Liu L, Wang H, Shen S. Operation mechanism of constructed wetland-microbial fuel cells for wastewater treatment and electricity generation: A review. BIORESOURCE TECHNOLOGY 2020; 314:123808. [PMID: 32713782 DOI: 10.1016/j.biortech.2020.123808] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/02/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
Constructed wetland-microbial fuel cells (CWL-MFCs) are eco-friendly and sustainable technology, simultaneously implementing contaminant removal and electricity production. According to intensive research over the last five years, this review on the operation mechanism was conducted for in-depth understanding and application guidance of CWL-MFCs. The electrochemical mechanism based on anodic oxidation and cathodic reduction is the core for improved treatment in CWL-MFCs compared to CWLs. As the dominant bacterial community, the abundance and gene-expression patterns of electro-active bacteria responds to electrode potentials and contaminant loadings, further affecting operational efficiency of CWL-MFCs. Plants benefit COD and N removal by supplying oxygen for aerobic degradation and rhizosphere secretions for microorganisms. Multi-electrode configuration, carbon-based electrodes and rich porous substrates affect transfer resistance and bacterial communities. The possibilities of CWL-MFCs targeting at recalcitrant contaminants like flame retardants and interchain interactions among effect components need systematic research.
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Affiliation(s)
- Wenjing Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Yu Zhang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Mengxiang Li
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Xiaogang Wei
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Yali Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Ling Liu
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Hongjie Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China.
| | - Shigang Shen
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China
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Srivastava P, Abbassi R, Yadav AK, Garaniya V, Asadnia M. A review on the contribution of electron flow in electroactive wetlands: Electricity generation and enhanced wastewater treatment. CHEMOSPHERE 2020; 254:126926. [PMID: 32957303 DOI: 10.1016/j.chemosphere.2020.126926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
In less than a decade, bioelectrochemical systems/microbial fuel cell integrated constructed wetlands (electroactive wetlands) have gained a considerable amount of attention due to enhanced wastewater treatment and electricity generation. The enhancement in treatment has majorly emanated from the electron transfer or flow, particularly in anaerobic regions. However, the chemistry associated with electron transfer is complex to understand in electroactive wetlands. The electroactive wetlands accommodate diverse microbial community in which each microbe set their own potential to further participate in electron transfer. The conductive materials/electrodes in electroactive wetlands also contain some potential, due to which, several conflicts occur between microbes and electrode, and results in inadequate electron transfer or involvement of some other reaction mechanisms. Still, there is a considerable research gap in understanding of electron transfer between electrode-anode and cathode in electroactive wetlands. Additionally, the interaction of microbes with the electrodes and understanding of mass transfer is also essential to further understand the electron recovery. This review mainly deals with the electron transfer mechanism and its role in pollutant removal and electricity generation in electroactive wetlands.
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Affiliation(s)
- Pratiksha Srivastava
- Australian Maritime College, College of Sciences and Engineering, University of Tasmania, Launceston, 7248, Australia
| | - Rouzbeh Abbassi
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Asheesh Kumar Yadav
- Environment and Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
| | - Vikram Garaniya
- Australian Maritime College, College of Sciences and Engineering, University of Tasmania, Launceston, 7248, Australia
| | - Mohsen Asadnia
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW, 2109, Australia
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Rodríguez-González V, Obregón S, Patrón-Soberano OA, Terashima C, Fujishima A. An approach to the photocatalytic mechanism in the TiO 2-nanomaterials microorganism interface for the control of infectious processes. APPLIED CATALYSIS. B, ENVIRONMENTAL 2020; 270:118853. [PMID: 32292243 DOI: 10.1016/j.apcatb.2020.118857] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 05/21/2023]
Abstract
The approach of this timely review considers the current literature that is focused on the interface nanostructure/cell-wall microorganism to understand the annihilation mechanism. Morphological studies use optical and electronic microscopes to determine the physical damage on the cell-wall and the possible cell lysis that confirms the viability and microorganism death. The key parameters of the tailoring the surface of the photoactive nanostructures such as the metal functionalization with bacteriostatic properties, hydrophilicity, textural porosity, morphology and the formation of heterojunction systems, can achieve the effective eradication of the microorganisms under natural conditions, ranging from practical to applications in environment, agriculture, and so on. However, to our knowledge, a comprehensive review of the microorganism/nanomaterial interface approach has rarely been conducted. The final remarks point the ideal photocatalytic way for the effective prevention/eradication of microorganisms, considering the resistance that the microorganism could develop without the appropriate regulatory aspects for human and ecosystem safety.
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Affiliation(s)
- Vicente Rodríguez-González
- Photocatalysis International Research Center, Research Institute for Science & Technology, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), División de Materiales Avanzados, Camino a la Presa San José 2055, Lomas 4a, Sección, 78216, San Luis Potosí, Mexico
| | - Sergio Obregón
- Universidad Autónoma de Nuevo León, UANL, CICFIM-Facultad de Ciencias Físico Matemáticas, Av. Universidad S/N, San Nicolás de los Garza, 66455, Nuevo León, Mexico
| | - Olga A Patrón-Soberano
- Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), División de Biología Molecular, Camino a la Presa San José 2055, Lomas 4a, Sección, 78216, San Luis Potosí, Mexico
| | - Chiaki Terashima
- Photocatalysis International Research Center, Research Institute for Science & Technology, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Akira Fujishima
- Photocatalysis International Research Center, Research Institute for Science & Technology, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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30
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Guo Y, Wang J, Shinde S, Wang X, Li Y, Dai Y, Ren J, Zhang P, Liu X. Simultaneous wastewater treatment and energy harvesting in microbial fuel cells: an update on the biocatalysts. RSC Adv 2020; 10:25874-25887. [PMID: 35518611 PMCID: PMC9055303 DOI: 10.1039/d0ra05234e] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 07/03/2020] [Indexed: 01/17/2023] Open
Abstract
The development of microbial fuel cell (MFC) makes it possible to generate clean electricity as well as remove pollutants from wastewater. Extensive studies on MFC have focused on structural design and performance optimization, and tremendous advances have been made in these fields. However, there is still a lack of systematic analysis on biocatalysts used in MFCs, especially when it comes to pollutant removal and simultaneous energy recovery. In this review, we aim to provide an update on MFC-based wastewater treatment and energy harvesting research, and analyze various biocatalysts used in MFCs and their underlying mechanisms in pollutant removal as well as energy recovery from wastewater. Lastly, we highlight key future research areas that will further our understanding in improving MFC performance for simultaneous wastewater treatment and sustainable energy harvesting.
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Affiliation(s)
- Yajing Guo
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
| | - Jiao Wang
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
| | - Shrameeta Shinde
- Department of Microbiology, Miami University Oxford OH 45056 USA
| | - Xin Wang
- Department of Microbiology, Miami University Oxford OH 45056 USA
| | - Yang Li
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
| | - Yexin Dai
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
| | - Jun Ren
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
| | - Pingping Zhang
- College of Food Science and Engineering, Tianjin Agricultural University Tianjin 300384 PR China
| | - Xianhua Liu
- Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
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Improved Simultaneous Decolorization and Power Generation in a Microbial Fuel Cell with the Sponge Anode Modified by Polyaniline and Chitosan. Appl Biochem Biotechnol 2020; 192:698-718. [PMID: 32515002 DOI: 10.1007/s12010-020-03346-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023]
Abstract
In recent years, microbial fuel cell (MFC) has been regarded as a promising technology for dye wastewater treatment. Compared with traditional anaerobic reactors, MFC has better decolorization effect while producing electricity simultaneously. In this paper, a double-chamber MFC with the sponge anode modified by polyaniline and chitosan-NCNTs was employed for simultaneous azo dye decolorization and bioelectricity generation. The influence of dye concentration, co-substrate concentration, and operating temperature on the performance of MFC with the modified anodes were studied. The results showed that a high decolorization efficiency (98.41%) and maximum power density (2816.67 mW m-3) of MFC equipped with modified bioanodes were achieved due to the biocompatibility and bioelectrocatalysis of modified material. And the biomass on the modified anode's surface was increased by 1.47 times. Additionally, microbial community analysis revealed that the modification of polyaniline and chitosan-NCNTs improved the selective enrichment of specific communities and the main microorganism was the electroactive and decolorizing bacteria Enterobacter (62.84%). Therefore, the composite anode is capable of fully utilizing the synergistic role of various materials, leading to superior performance of dye decolorization in MFCs. This work provided a strategy for the research on the recovery of biomass energy and decolorization in wastewater treatment. Graphical Abstract.
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Zhang K, Wu X, Luo H, Li X, Chen W, Chen J, Mo Y, Wang W. CH 4 control and associated microbial process from constructed wetland (CW) by microbial fuel cells (MFC). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 260:110071. [PMID: 32090814 DOI: 10.1016/j.jenvman.2020.110071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Global warming is becoming more severe. We here proposed an innovative green technique aimed at reducing the CH4 emissions from constructed wetlands (CWs) in which CH4 is controlled by microbial fuel cells (MFCs). The results of our work indicated that CH4 emissions from CWs could be controlled by operating MFC. The CH4 fluxes significantly decreased in the MFC-CW (close circuit CC) compared with the control MFC-CW (open circuit OC). The bioelectricity generation and COD removal rates also differed in the two systems. The highest power density (0.27 W m-3) and the lowest CH4 emissions (4.7 mg m-2 h-1) were observed in the CC system. The plants' effects on the performance of the MFC-CWs were also investigated. The plant species had a profound impact on the CH4 emissions and electricity production in MFC-CWs. The greatest CH4 flux (9.5 mg m-2 h-1) was observed from the MFC-CW planted with Typha orientalis, while the CH4 emissions from the MFC-CW planted with Cyperus alternifolius were reduced by 45%. Additional microbial processes were investigated. Quantitative real-time PCR (q-PCR) analysis indicated that the gene abundance of eubacterial 16 S rRNA, particulate methane monooxygenase (pmoA), and methyl coenzyme M reductase (mcrA) significantly differed for the control CW and MFC-CWs planted with different plants. In the CC systems, the mcrA genes in the anode were low, while the pmoA genes in the cathode were high. The operation of MFCs in CWs changed the exoelectrogenic and methanogenic community structures. Sequencing analysis indicated that phylotypes related to Geobacter, Bacteroides, and Desulfovibrio were specifically enriched in the CC systems. The results demonstrated that the operation of MFCs in the CWs resulted in the competition between the electrogenes and methanogenes, which resulted in distinctive microbial populations and biochemical processes that suppressed the CH4 emissions from the CWs.
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Affiliation(s)
- Ke Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, PR China; College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China.
| | - Xiangling Wu
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Hongbing Luo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Xiangkun Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, PR China.
| | - Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Jia Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - You Mo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, PR China
| | - Wei Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, PR China
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Tan X, Yang YL, Li X, Zhou ZW, Liu CJ, Liu YW, Yin WC, Fan XY. Intensified nitrogen removal by heterotrophic nitrification aerobic denitrification bacteria in two pilot-scale tidal flow constructed wetlands: Influence of influent C/N ratios and tidal strategies. BIORESOURCE TECHNOLOGY 2020; 302:122803. [PMID: 31981807 DOI: 10.1016/j.biortech.2020.122803] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/03/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
This study investigated the influence of C/N ratios and tidal strategies on nitrogen removal and bacterial communities in two pilot-scale tidal flow constructed wetlands (TFCWs) with simultaneous nitrification-denitrification process. Heterotrophic nitrification aerobic denitrification (HNAD) was the main nitrogen transformation pathway in both TFCWs. High C/N ratios and effluent circulation at low temperature promoted HNAD in TFCWs with high nitrogen removal efficiencies (72.6%-95.5% for NH4+-N and 70.9%~91.8% for TN). Effluent circulation had more influence on bacterial community structure and diversity than C/N ratios. Among 16 detected genera related to nitrogen removal, HNAD bacteria (HNADB) were abundant. Especially, some dominant HNADB (e.g. Aeromonas, Hydrogenophage and Gemmobacter) were core genera, showing positive interactions with other genera related to nitrogen removal. Tidal strategies had more contribution to the shifts in these genera than C/N ratios. This study highlights the importance of HNADB in pilot-scale TFCWs and their responses to C/N ratios and tidal strategies.
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Affiliation(s)
- Xu Tan
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yan-Ling Yang
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
| | - Xing Li
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhi-Wei Zhou
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
| | - Chang-Jian Liu
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yong-Wang Liu
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; China Architecture Design and Research Group, Beijing 100044, China
| | - Wen-Chao Yin
- China Architecture Design and Research Group, Beijing 100044, China
| | - Xiao-Yan Fan
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
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Pu KB, Bai JR, Chen QY, Wang YH. Modified Stainless Steel as Anode Materials in Bioelectrochemical Systems. ACS SYMPOSIUM SERIES 2020. [DOI: 10.1021/bk-2020-1342.ch008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kai-Bo Pu
- Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Ji-Rui Bai
- Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Qing-Yun Chen
- State Key Lab of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yun-Hai Wang
- Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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Li H, Xu H, Yang YL, Yang XL, Wu Y, Zhang S, Song HL. Effects of graphite and Mn ore media on electro-active bacteria enrichment and fate of antibiotic and corresponding resistance gene in up flow microbial fuel cell constructed wetland. WATER RESEARCH 2019; 165:114988. [PMID: 31442759 DOI: 10.1016/j.watres.2019.114988] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 05/12/2023]
Abstract
This study assessed the influence of substrate type on pollutants removal, antibiotic resistance gene (ARG) fate and bacterial community evolution in up-flow microbial fuel cell constructed wetlands (UCW-MFC) with graphite and Mn ore electrode substrates. Better COD removal and higher bacterial community diversity and electricity generation performance were achieved in Mn ore constructed UCW-MFC (Mn). However, the lower concentration of sulfadiazine (SDZ) and the total abundances of ARGs were obtained in the effluent in the graphite constructed UCW-MFC (s), which may be related to higher graphite adsorption and filter capacity. Notably, both reactors can remove more than 97.8% of ciprofloxacin. In addition, significant negative correlations were observed between SDZ, COD concentration, ARG abundances and bacterial a-diversity indices. The LEfse analysis revealed significantly different bacterial communities due to the substrate differences in the two reactors, and Geobacter, a typical model electro-active bacteria (EAB), was greatly enriched on the anode of UCW-MFC (Mn). In contrast, the relative abundance of methanogens (Methanosaeta) was inhibited. PICRUSt analysis results further demonstrated that the abundance of extracellular electron transfer related functional genes was increased, but the methanogen function genes and multiple antibiotic resistance genes in UCW-MFC (Mn) anode were reduced. Redundancy analyses indicated that substrate type, antibiotic accumulation and bacterial community were the main factors affecting ARGs. Moreover, the potential ARG hosts and the co-occurrence of ARGs and intI1 were revealed by network analysis.
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Affiliation(s)
- Hua Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Han Xu
- School of Civil Engineering, Southeast University, Nanjing, 210096, China.
| | - Yu-Li Yang
- School of Environment, Nanjing Normal University, Jiangsu Engineering Lab of Water and Soil Eco-Remediation, Wenyuan Road 1, Nanjing, 210023, China.
| | - Xiao-Li Yang
- School of Civil Engineering, Southeast University, Nanjing, 210096, China.
| | - You Wu
- School of Environment, Nanjing Normal University, Jiangsu Engineering Lab of Water and Soil Eco-Remediation, Wenyuan Road 1, Nanjing, 210023, China.
| | - Shuai Zhang
- School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Hai-Liang Song
- School of Environment, Nanjing Normal University, Jiangsu Engineering Lab of Water and Soil Eco-Remediation, Wenyuan Road 1, Nanjing, 210023, China.
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Wang C, Xu Y, Hou J, Wang P, Zhang F, Zhou Q, You G. Zero valent iron supported biological denitrification for farmland drainage treatments with low organic carbon: Performance and potential mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:1044-1053. [PMID: 31466145 DOI: 10.1016/j.scitotenv.2019.06.488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 06/10/2023]
Abstract
In this work, the feasibility and performance of zero valent iron (ZVI) coupled anaerobic microorganisms in nitrogen removal under low organic carbon condition were investigated, through the comparison of mono-ZVI system and mono-cell system. Coupled system showed the highest total nitrogen (TN) removal efficiency of 67.85% with the addition of 15 g L-1 iron shavings at pH 7.0, which was higher than 29.62% in the mono-ZVI system and 43.86% in the mono-cell system. Besides, the activities of nitrate reductase (NAR), nitrite reductase (NIR), nitric oxide reductase (NOR) and nitrous oxide reductase (N2OR) were significantly improved at ZVI dosage of 15 g L-1 and pH 7.0, which contributed to the higher TN removal efficiency in coupled system. The extent of sludge granulation was greater in the coupled system than mono-cell system, which benefited to the high operational performance and stability of coupled system. The promoted generation of extracellular polymeric substances (EPS) and formation of iron oxides in the coupled system also took advantages on nitrogen removal through adsorption. In addition, ZVI could largely enrich the functional species related to nitrogen removal in the system at phyla and genera level, which could be reasoned for the enhanced nitrogen removal efficiency. In conclusion, this study will improve the understandings of nitrogen removal in the coupled system and be useful to ensure the application of ZVI-supported biological process in the remediation of farmland drainage.
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Affiliation(s)
- Chao Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
| | - Yi Xu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098.
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
| | - Fei Zhang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
| | - Qing Zhou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
| | - Guoxiang You
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, NanJing, People's Republic of China, 210098
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Chen J, Lv Y, Wang Y, Ren Y, Li X, Wang X. Endogenous inorganic carbon buffers accumulation and self-buffering capacity enhancement of air-cathode microbial fuel cells through anolyte recycling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 676:11-17. [PMID: 31029896 DOI: 10.1016/j.scitotenv.2019.04.282] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/31/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
Anolyte acidification is inevitable in the operation of buffer-free microbial fuel cells (MFCs), which restricts the proliferation and metabolism of electroactive bacteria, and results in electric-power deterioration. The anodic metabolic end-products, inorganic carbons (IC), which are composed of H2CO3 (dissolved CO2), HCO3-, and CO32-, are ideal endogenous buffers, whereas the naturally accumulated IC are far from enough to prevent anolyte acidification. In this work, different volume ratios of the anolytes (10%, 30%, and 50%) were recycled to increase the IC concentrations of the single-chamber air-cathode buffer-free MFCs. Under anolyte recycling running mode, IC accumulation agreed with the SGompertz model and the fitting IC-asymptotic concentrations (ICAC) grew exponentially to 18.5 mM, 24.4 mM, and 32.8 mM as the anolyte recycling ratio increased from 10% to 30% and 50%. Self-buffering running can be realized when the anolyte recycling ratio exceeds 50% for the MFC feeding on 1 g·L-1 of acetate. The electric power for the 50% recycling scenario increased from the baseline control of 272.4 mW·m-2 to 628.5 mW·m-2. The coulombic efficiency (CE) was also apparently improved. This paper for the first time clarifies the accumulation law of endogenous IC buffers under anolyte partially recycling mode and their self-buffering effects.
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Affiliation(s)
- Jinli Chen
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Ying Lv
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yue Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yueping Ren
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Xiufen Li
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Xinhua Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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Yang Y, Zhao Y, Tang C, Mao Y, Shen C. Significance of water level in affecting cathode potential in electro-wetland. BIORESOURCE TECHNOLOGY 2019; 285:121345. [PMID: 31000453 DOI: 10.1016/j.biortech.2019.121345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
Bioelectricity production is always restricted by the limited cathode performance in integrated constructed wetland-microbial fuel cells (termed as electro-wetlands). Generally, the cathodes are located at the air-water interface for an oxygen-rich environment. However, its performance may still be unsatisfactory, resulting in a low bioelectricity production. After a long term trial in previous study, we recognised that the position of the electron collector in the cathode significantly affected the bioelectricity production in electro-wetlands. In this study, two cathode configurations of electron collector at the air-water interface and above water level for 1.5 cm, respectively, were evaluated for cell voltage and power density in a vertical up-flow electro-wetland. Results showed that maximum total power density was increased from 31 mW/m2 to 165 mW/m2 when the cathode electron collector was changed from the air-water interface to 1.5 cm above water level, proving that cathode configuration is the key factor in bioelectricity production.
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Affiliation(s)
- Yan Yang
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland; Department of Environmental Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, PR China
| | - Yaqian Zhao
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland; Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, PR China.
| | - Cheng Tang
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yi Mao
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cheng Shen
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
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Kim H, Kim B, Yu J. Effect of HRT and external resistances on power generation of sidestream microbial fuel cell with CNT-coated SSM anode treating actual fermentation filtrate of municipal sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 675:390-396. [PMID: 31030145 DOI: 10.1016/j.scitotenv.2019.04.270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/17/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
A microbial fuel cell (MFC) with multiwall carbon nanotube (CNT) coated stainless steel mesh (SSM) coated anode (S-MFC) was operated with a filtrate generated by the fermentation of municipal primary sludge. The S-MFC's maximum power density (MPD: 69.8-164.9 W/m3) and energy recovery (ER: 0.15-0.60 kWh/kgCOD) were 7-21 times higher than those (3.8-27.3 W/m3 and 0.01-0.11 kWh/kgCOD) of MFC with a graphite felt as an anode (G-MFC). The microbial communities of S- and G-MFCs varied slightly depending on the electrode material. Chloroflexi (23.5%) was dominant in S-MFC, and Proteobacteria (25.3%) in G-MFC. Fermenting bacteria such as Rhodanobacter lindaniclasticus and Anaerolineaceae bacterium were dominated by continuous non-electrochemically active bacteria invasion because the actual fermentation filtrate was directly utilized as the substrate. Nevertheless, the CNT-coated SSM anode and the fermentation filtrate of primary sludge improved the power generation in MFC, which demonstrates the significant potential of this sidestream process for sludge treatment.
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Affiliation(s)
- Hongsuck Kim
- Water Works Research Center, K-water Research Institute, Daejeon, Republic of Korea
| | - Byunggoon Kim
- Water Works Research Center, K-water Research Institute, Daejeon, Republic of Korea
| | - Jaecheul Yu
- Department of Civil and Environmental Engineering, Pusan National University, Busan, Republic of Korea.
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Saba B, Khan M, Christy AD, Kjellerup BV. Microbial phyto-power systems – A sustainable integration of phytoremediation and microbial fuel cells. Bioelectrochemistry 2019; 127:1-11. [DOI: 10.1016/j.bioelechem.2018.12.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 12/14/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022]
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Hartl M, Bedoya-Ríos DF, Fernández-Gatell M, Rousseau DPL, Du Laing G, Garfí M, Puigagut J. Contaminants removal and bacterial activity enhancement along the flow path of constructed wetland microbial fuel cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 652:1195-1208. [PMID: 30586806 DOI: 10.1016/j.scitotenv.2018.10.234] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/24/2018] [Accepted: 10/16/2018] [Indexed: 06/09/2023]
Abstract
Microbial fuel cells implemented in constructed wetlands (CW-MFCs), albeit a relatively new technology still under study, have shown to improve treatment efficiency of urban wastewater. So far the vast majority of CW-MFC systems investigated were designed as lab-scale systems working under rather unrealistic hydraulic conditions using synthetic wastewater. The main objective of this work was to quantify CW-MFCs performance operated under different conditions in a more realistic setup using meso-scale systems with horizontal flow fed with real urban wastewater. Operational conditions tested were organic loading rate (4.9 ± 1.6, 6.7 ± 1.4 and 13.6 ± 3.2 g COD/m2·day) and hydraulic regime (continuous vs. intermittent feeding) as well as different electrical connections: CW control (conventional CW without electrodes), open-circuit CW-MFC (external circuit between anode and cathode not connected) and closed-circuit CW-MFC (external circuit connected). Eight horizontal subsurface flow CWs were operated for about four months. Each wetland consisted of a PVC reservoir of 0.193 m2 filled with 4/8 mm granitic riverine gravel (wetted depth 25 cm). All wetlands had intermediate sampling points for gravel and interstitial liquid sampling. The CW-MFCs were designed as three MFCs incorporated one after the other along the flow path of the CWs. Anodes consisted of gravel with an incorporated current collector (stainless steel mesh) and the cathode consisted of a graphite felt layer. Electrodes of closed-circuit CW-MFC systems were connected externally over a 220 Ω resistance. Results showed no significant differences between tested organic loading rates, hydraulic regimes or electrical connections, however, on average, systems operated in closed-circuit CW-MFC mode under continuous flow outperformed the other experimental conditions. Closed-circuit CW-MFC compared to conventional CW control systems showed around 5% and 22% higher COD and ammonium removal, respectively. Correspondingly, overall bacteria activity, as measured by the fluorescein diacetate technique, was higher (4% to 34%) in closed-circuit systems when compared to CW control systems.
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Affiliation(s)
- Marco Hartl
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain; Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Diego F Bedoya-Ríos
- Grupo Ciencia e Ingeniería del Agua y el Ambiente, Facultad de Ingeniería, Pontificia Universidad Javeriana, Carrera 7 No. 40 - 62, Bogotá D.C., Colombia
| | - Marta Fernández-Gatell
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Diederik P L Rousseau
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Gijs Du Laing
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Marianna Garfí
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Jaume Puigagut
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain.
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Wang G, Guo Y, Cai J, Wen H, Mao Z, Zhang H, Wang X, Ma L, Zhu M. Electricity production and the analysis of the anode microbial community in a constructed wetland-microbial fuel cell. RSC Adv 2019; 9:21460-21472. [PMID: 35521306 PMCID: PMC9066182 DOI: 10.1039/c8ra10130b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 06/10/2019] [Indexed: 11/21/2022] Open
Abstract
The objective of this study is to assess bioelectricity generation, pollutant removal (COD, ammonium, nitrate) and the bacterial communities on anodes in constructed wetlands coupled with microbial fuel cells (CW-MFCs), through feeding the systems with three different types of synthetic wastewater (system 1: normal wastewater; system 2: ammonium-free wastewater; system 3: nitrate-free wastewater). Three CW-MFCs were operated with different wastewater concentrations and hydraulic retention times (HRTs) over a long time period (6 months). The results indicate that the maximum open circuit voltage (775.63 mV) and maximum power density (0.628 W m−3) were observed in system 3 (period 3), and that bioenergy production was inhibited in system 2, when feeding with ammonium-free wastewater continuously. COD removal rates in the three systems were similar during each period and ranged from 82.2 ± 6.8% to 98.3 ± 2.2%. Ammonium removal occurred at the air cathode of the CW-MFCs through nitrification, and a higher level of ammonium removal was found in system 1 (period 3) compared with the others. Meanwhile, denitrification occurred at the anaerobic anode of the CW-MFCs, and a large amount of nitrate was removed effectively. The highest nitrate removal rate was 98.8 ± 0.5% in system 2 (period 3). Additionally, four genera related to electricity generation were detected at the anode: Geothrix; Desulfovibrio; Desulfobulbus; and Geobacter. The relative abundances of Desulfovibrio, Desulfobulbus and Geothrix gradually increased during the three periods in system 3, which might be beneficial for bioelectricity generation. Further investigations are needed to optimize the CW-MFC performance and explain the mechanism behind the pollutant degradation and electron motion in the CW-MFCs. The objective of this study is to assess bioelectricity generation, pollutant removal and the bacterial communities on anodes in constructed wetlands coupled with microbial fuel cells, through feeding the systems with three different types of synthetic wastewater.![]()
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Affiliation(s)
- Guozhen Wang
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Yating Guo
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Jiaying Cai
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Hongyu Wen
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Zhen Mao
- School of Environment Science and Spatial Informatics
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - Hao Zhang
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Xin Wang
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Lei Ma
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Mengqin Zhu
- School of Life Science
- Jiangsu Normal University
- Xuzhou 221116
- China
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43
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Gonzalez-Martínez A, Chengyuan S, Rodriguez-Sanchez A, Pozo C, Gonzalez-Lopez J, Vahala R. Application of microbial fuel cell technology for wastewater treatment and electricity generation under Nordic countries climate conditions: Study of performance and microbial communities. BIORESOURCE TECHNOLOGY 2018; 270:1-10. [PMID: 30199700 DOI: 10.1016/j.biortech.2018.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/30/2018] [Accepted: 09/01/2018] [Indexed: 06/08/2023]
Abstract
Two microbial fuel cells were inoculated with activated sludge from Finland and operated under moderate (25 °C) and low (8 °C) temperatures. Operation under real urban wastewater showed similarities in chemical oxygen demand removal and voltage generated, although moderate temperature supported higher ammonium oxidation. Fungi disappeared in the microbial fuel cell operated at temperature of 25 °C. Archaea domain was dominated by methanogenic archaea at both temperature scenarios. Important differences were observed in bacterial communities between both temperatures, however generating similar voltage. The results supported that the implementation of microbial fuel cells in Nordic countries operating under real conditions could be successful, as well as suggested the flexibility of cold-adapted inoculum for starting-up microbial fuel cells, regardless of the operating temperature of the system, obtaining higher COD removal and voltage generation performances at low temperature than at moderate temperature.
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Affiliation(s)
| | - Su Chengyuan
- Department of Environmental Engineering, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Ministry of Education, Guilin 541004, People's Republic of China
| | | | - Clementina Pozo
- Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, 18071 Granada, Spain
| | - Jesus Gonzalez-Lopez
- Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, 18071 Granada, Spain
| | - Riku Vahala
- Department of Built Environment, School of Engineering, Aalto University, P.O. Box 15200, Aalto, FI-00076 Espoo, Finland
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Si Z, Song X, Wang Y, Cao X, Zhao Y, Wang B, Chen Y, Arefe A. Intensified heterotrophic denitrification in constructed wetlands using four solid carbon sources: Denitrification efficiency and bacterial community structure. BIORESOURCE TECHNOLOGY 2018; 267:416-425. [PMID: 30032055 DOI: 10.1016/j.biortech.2018.07.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
Biodenitrification using solid carbon sources is a cost-effective way for nitrate removal. In the study, wheat straw, cotton, poly(butylene succinate), and newspaper was chosen as the carbon source to compare the denitrification efficiency and bacterial communities in constructed wetlands. Parameters including COD, NO3--N, NO2--N and total nitrogen (TN) were analyzed. Results indicated that newspaper provided significantly higher NO3--N and TN removal efficiency than the other three solid carbon sources in low-temperature condition. Moreover, both newspaper and wheat straw allowed high NO3--N and TN removal efficiency in high-temperature condition. According to pyrosequencing analysis, denitrifying bacteria Dechloromonas and Thauera were the predominant genus in the anaerobic zone of CO- (3.92 and 2.35%, respectively), WS- (1.97 and 1.02%, respectively) and NP-CWs (1.71 and 1.31%, respectively). Genus of Levilinea was enriched in NP- (1.02%) and WS-CWs (0.91%). Furthermore, genus Paludibacter (2.69%) and Saccharofermentans (3.14%) showed high relative abundance in WS-CWs.
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Affiliation(s)
- Zhihao Si
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
| | - Yuhui Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Xin Cao
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Yufeng Zhao
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Bodi Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Yan Chen
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Awet Arefe
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
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45
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Zhao Y, Cao X, Song X, Zhao Z, Wang Y, Si Z, Lin F, Chen Y, Zhang Y. Montmorillonite supported nanoscale zero-valent iron immobilized in sodium alginate (SA/Mt-NZVI) enhanced the nitrogen removal in vertical flow constructed wetlands (VFCWs). BIORESOURCE TECHNOLOGY 2018; 267:608-617. [PMID: 30056371 DOI: 10.1016/j.biortech.2018.07.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/11/2018] [Accepted: 07/14/2018] [Indexed: 06/08/2023]
Abstract
Lacking of electron donor generally causes the low denitrification performance of constructed wetlands (CWs). Montmorillonite supported nanoscale zero-valent iron immobilized in sodium alginate (SA/Mt-NZVI) as novel electron donor-acceptor compounds were added in the denitrification zone of vertical flow constructed wetlands (VFCWs) to enhance the nitrogen removal. The key factors of the SA/Mt-NZVI dosage, the hydraulic retention time (HRT) of VFCWs, and the C/N ratios of influent were explored. SA/Mt-NZVI significantly improved the nitrogen (NO3--N) removal efficiency in VFCWs. When the optimal dosage of SA/Mt-NZVI was set as 2 g and the C/N was set as 6, the highest NO3--N removal efficiency was improved by 32.5 ± 1.0%. The microbial community analysis of by 16S rRNA had revealed that Proteobacteria and Bacteroidetes at phylum level and Betaproteobacteria, Gammaproteobacteria, and Alphaproteobacteria at class level played an important role in nitrogen removal.
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Affiliation(s)
- Yufeng Zhao
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xin Cao
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xinshan Song
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Zhimiao Zhao
- Engineering Research Center for Water Environment Ecology in Shanghai, College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Yuhui Wang
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhihao Si
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Fanda Lin
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yan Chen
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yinjiang Zhang
- Engineering Research Center for Water Environment Ecology in Shanghai, College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
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46
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Yang G, Wang J. Improving mechanisms of biohydrogen production from grass using zero-valent iron nanoparticles. BIORESOURCE TECHNOLOGY 2018; 266:413-420. [PMID: 29982065 DOI: 10.1016/j.biortech.2018.07.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/01/2018] [Accepted: 07/02/2018] [Indexed: 05/09/2023]
Abstract
This paper investigated the improving mechanisms and microbial community dynamics of using zero-valent iron nanoparticles (Fe0 NPs) in hydrogen fermentation of grass. Results showed that Fe0 NPs supplement improved microbial activity and changed dominant microbial communities from Enterobacter sp. to Clostridium sp., which induced a more efficient metabolic pathway towards higher hydrogen production. Meanwhile, it is also proposed that Fe0 NPs could accelerate electron transfer between ferredoxin and hydrogenase, and promote the activity of key enzymes by the released Fe2+. The maximal hydrogen yield and hydrogen production rate were 64.7 mL/g-dry grass and 12.1 mL/h, respectively at Fe0 NPs dosage of 400 mg/L, which were 73.1% and 128.3% higher compared with the control group. Fe0 NPs also shorten the lag time and facilitated the hydrolysis and utilization of grass. This study demonstrated that Fe0 NPs could effectively improve hydrogen production and accelerate the fermentation process of grass.
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Affiliation(s)
- Guang Yang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, PR China.
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47
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Ma B, Yu N, Han Y, Gao M, Wang S, Li S, Guo L, She Z, Zhao Y, Jin C, Gao F. Effect of magnesium oxide nanoparticles on microbial diversity and removal performance of sequencing batch reactor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 222:475-482. [PMID: 29908478 DOI: 10.1016/j.jenvman.2018.05.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 04/18/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
The performance, microbial enzymatic activity and microbial community of a sequencing batch reactor (SBR) have been explored under magnesium oxide nanoparticles (MgO NPs) stress. The NH4+-N removal efficiency kept relatively stable during the whole operational process. The MgO NPs at 30-60 mg/L slightly restrained the removal of chemical oxygen demand (COD), and the presence of MgO NPs also affected the denitrification and phosphorus removal. The specific oxygen uptake rate, nitrifying and denitrifying rates, phosphorus removal rate, and microbial enzymatic activities distinctly varied with the increase of MgO NPs concentration. The appearance of MgO NPs promoted more reactive oxygen species generation and lactate dehydrogenase leakage from activated sludge, suggesting that MgO NPs had obvious toxicity to activated sludge in the SBR. The protein and polysaccharide contents of extracellular polymeric substances from activated sludge increased with the increase of MgO NPs concentration. The microbial richness and diversity at different MgO NPs concentrations obviously varied at the phylum, class and genus levels due to the biological toxicity of MgO NPs.
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Affiliation(s)
- Bingrui Ma
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Qingdao, 266100, China
| | - Naling Yu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Yuetong Han
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Mengchun Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
| | - Sen Wang
- Shcool of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Shanshan Li
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Liang Guo
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Qingdao, 266100, China
| | - Zonglian She
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Yangguo Zhao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Qingdao, 266100, China
| | - Chunji Jin
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Feng Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
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48
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Zhou Y, Xu D, Xiao E, Xu D, Xu P, Zhang X, Zhou Q, He F, Wu Z. Relationship between electrogenic performance and physiological change of four wetland plants in constructed wetland-microbial fuel cells during non-growing seasons. J Environ Sci (China) 2018; 70:54-62. [PMID: 30037411 DOI: 10.1016/j.jes.2017.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 06/08/2023]
Abstract
To find suitable wetland plants for constructed wetland-microbial fuel cells (CW-MFCs), four commonly used wetland plants, including Canna indica, Cyperus alternifolius L., Acorus calamus, and Arundo donax, were investigated for their electrogenic performance and physiological changes during non-growing seasons. The maximum power output of 12.82mW/m2 was achieved in the A. donax CW-MFC only when root exudates were being released. The results also showed that use of an additional carbon source could remarkably improve the performance of electricity generation in the C. indica and A. donax CW-MFCs at relatively low temperatures (2-15°C). However, A. calamus withered before the end of the experiment, whereas the other three plants survived the winter safely, although their relative growth rate values and the maximum quantum yield of PSII (Fv/Fm) significantly declined, and free proline and malondialdehyde significantly accumulated in their leaves. On the basis of correlation analysis, temperature had a greater effect on plant physiology than voltage. The results offer a valuable reference for plant selection for CW-MFCs.
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Affiliation(s)
- Yin Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Enrong Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Dan Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Peng Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Qiaohong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Abstract
Greywater reuse through decentralized and low-cost treatment systems emerges as an opportunity to tackle the existing demand for water. In recent years, constructed wetlands (CW) systems and microbial fuel cells (MFCs) have emerged as attractive technologies for sustainable wastewater treatment. In this study, constructed wetland microbial fuel cells (CW-MFCs) planted with Phragmites australis were tested to evaluate the potential of combining these two systems for synthetic greywater treatment and energy recovery. Open (CW) and closed circuit (CW-MFCs) reactors were operated for 152 days to evaluate the effect of energy recovery on the removal of soluble chemical oxygen demand (sCOD), nutrients and total suspended solids (TSS). Results indicate no significant differences for sCOD and phosphate removal efficiencies. CW-MFCs and CW reactors presented sCOD removal efficiency of 91.7 ± 5.1% and 90 ± 10% and phosphate removal efficiencies of 56.3 ± 4.4% and 61.5 ± 3.5%, respectively. Nitrate removal efficiencies were higher in CW: 99.5 ± 1% versus 86.5 ± 7.1% in CW-MFCs, respectively. Energy generation reached a maximum power density of 33.52 ± 7.87 mW m−3 and 719.57 ± 67.67 mW m−3 at a poised anode potential of −150 mV vs. Ag/AgCl. Thus, our results suggest that the incorporation of MFC systems into constructed wetlands does allow energy recovery while providing effective greywater treatment.
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50
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Li M, Zhou M, Tian X, Tan C, McDaniel CT, Hassett DJ, Gu T. Microbial fuel cell (MFC) power performance improvement through enhanced microbial electrogenicity. Biotechnol Adv 2018; 36:1316-1327. [DOI: 10.1016/j.biotechadv.2018.04.010] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 04/28/2018] [Accepted: 04/28/2018] [Indexed: 10/17/2022]
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