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Lan J, Wen F, Ren Y, Liu G, Jiang Y, Wang Z, Zhu X. An overview of bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated soils. Environ Sci Ecotechnol 2023; 16:100278. [PMID: 37251519 PMCID: PMC10220241 DOI: 10.1016/j.ese.2023.100278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 05/31/2023]
Abstract
The global problem of petroleum contamination in soils seriously threatens environmental safety and human health. Current studies have successfully demonstrated the feasibility of bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated soils due to their easy implementation, environmental benignity, and enhanced removal efficiency compared to bioremediation. This paper reviewed recent progress and development associated with bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated soils. The working principles, removal efficiencies, affecting factors, and constraints of the two technologies were thoroughly summarized and discussed. The potentials, challenges, and future perspectives were also deliberated to shed light on how to overcome the barriers and realize widespread implementation on large scales of these two technologies.
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Affiliation(s)
- Jun Lan
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Fang Wen
- Xinjiang Academy of Environmental Protection Science, Urumqi, 830011, China
| | - Yongxiang Ren
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Guangli Liu
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yi Jiang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - Zimeng Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Xiuping Zhu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
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2
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Xing Z, Wang Z, Chen W, Zhang M, Fu X, Gao Y. Degradation of levofloxacin in wastewater by photoelectric and ultrasonic synergy with TiO 2/g-C 3N 4@AC combined electrode. J Environ Manage 2023; 330:117168. [PMID: 36603258 DOI: 10.1016/j.jenvman.2022.117168] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/16/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
A novel particle combined electrode named TiO2/g-C3N4@AC (TGCN-AC) was prepared by loading TiO2 and g-C3N4 on activated carbon through gel method, which was used to degrade levofloxacin (LEF) in pharmaceutical wastewater by photoelectric process. The remarkable physicochemical features of particle electrodes were verified by using diverse characterization techniques including SEM-EDS, XRD, FT-IR, BET and pHZPC. EIS-CV and photocurrent showed excellent electrocatalysis and photoelectrocatalysis performance of particle electrodes. The photocatalytic characteristics and fluorescence properties of the particle electrode were proved by UV-vis DRS and PL spectra measurements. Combined with Tauc's plot and Mott-Schottky plots curves, the ECB and EVB of particle electrodes were determined. The experiments on different influence factors such as pH, ultrasonic, aeration, current density and the concentration of LEF were carried out in the photoelectric reactor. Under the conditions of pH values 3.0, 200 W ultrasonic, 8 L/min aeration, the mass ratio of g-C3N4 and TiO2 is 8%, after 4.0 h of photoelectric process, about 94.76% of LEF (20 mg/L) in water was degraded. TGCN-AC also has excellent reusability. The degradation rate of LEF can still reach 71.17% after repeated use for 6 times. Scavenger studies showed that h+ and O2- were the main active species. By observing the colony size of E. coli, it was proved that the LEF in the effluent had no antibacterial activity. The degradation pathways of LEF was analyzed and drawn by HPLC-MS spectra.
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Affiliation(s)
- Zihao Xing
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Zijing Wang
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Wenhui Chen
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Manying Zhang
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Xiaofei Fu
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Yong Gao
- Jiangsu Key Laboratory of E-waste Recycling, School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China.
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Mohammadi SA, Najafi H, Zolgharnian S, Sharifian S, Asasian-Kolur N. Biological oxidation methods for the removal of organic and inorganic contaminants from wastewater: A comprehensive review. Sci Total Environ 2022; 843:157026. [PMID: 35772531 DOI: 10.1016/j.scitotenv.2022.157026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/03/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Enzyme-based bioremediation is a simple, cost-effective, and environmentally friendly method for isolating and removing a wide range of environmental pollutants. This study is a comprehensive review of recent studies on the oxidation of pollutants by biological oxidation methods, performed individually or in combination with other methods. The main bio-oxidants capable of removing all types of pollutants, such as organic and inorganic molecules, from fungi, bacteria, algae, and plants, and different types of enzymes, as well as the removal mechanisms, were investigated. The use of mediators and modification methods to improve the performance of microorganisms and their resistance under harsh real wastewater conditions was discussed, and numerous case studies were presented and compared. The advantages and disadvantages of conventional and novel immobilization methods, and the development of enzyme engineering to adjust the content and properties of the desired enzymes, were also explained. The optimal operating parameters such as temperature and pH, which usually lead to the best performance, were presented. A detailed overview of the different combination processes was also given, including bio-oxidation in coincident or consecutive combination with adsorption, advanced oxidation processes, and membrane separation. One of the most important issues that this study has addressed is the removal of both organic and inorganic contaminants, taking into account the actual wastewaters and the economic aspect.
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Affiliation(s)
- Seyed Amin Mohammadi
- Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman 43581-39115, Iran
| | - Hanieh Najafi
- Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman 43581-39115, Iran
| | - Sheida Zolgharnian
- TUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315 Straubing, Germany
| | - Seyedmehdi Sharifian
- Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman 43581-39115, Iran
| | - Neda Asasian-Kolur
- Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman 43581-39115, Iran.
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Wang J, Ren K, Zhu Y, Huang J, Liu S. A Review of Recent Advances in Microbial Fuel Cells: Preparation, Operation, and Application. BioTech (Basel) 2022; 11:biotech11040044. [PMID: 36278556 PMCID: PMC9589990 DOI: 10.3390/biotech11040044] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/20/2022] [Accepted: 09/29/2022] [Indexed: 12/07/2022]
Abstract
The microbial fuel cell has been considered a promising alternative to traditional fossil energy. It has great potential in energy production, waste management, and biomass valorization. However, it has several technical issues, such as low power generation efficiency and operational stability. These issues limit the scale-up and commercialization of MFC systems. This review presents the latest progress in microbial community selection and genetic engineering techniques for enhancing microbial electricity production. The summary of substrate selection covers defined substrates and some inexpensive complex substrates, such as wastewater and lignocellulosic biomass materials. In addition, it also includes electrode modification, electron transfer mediator selection, and optimization of operating conditions. The applications of MFC systems introduced in this review involve wastewater treatment, production of value-added products, and biosensors. This review focuses on the crucial process of microbial fuel cells from preparation to application and provides an outlook for their future development.
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Affiliation(s)
- Jianfei Wang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Kexin Ren
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Yan Zhu
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Jiaqi Huang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA
- The Center for Biotechnology & Interdisciplinary Studies (CBIS), Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Shijie Liu
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA
- Correspondence:
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5
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Kong Z, Zhou Y, Fu Z, Zhang Y, Yan R. Mechanism of stable power generation and nitrogen removal in the ANAMMOX-MFC treating low C/N wastewater. Chemosphere 2022; 296:133937. [PMID: 35167835 DOI: 10.1016/j.chemosphere.2022.133937] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 01/14/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
This study investigated the mechanism of enhanced power generation and nitrogen removal in an ANAMMOX-MFC reactor through subsequent acetate addition. Data showed that nearly 99% total nitrogen removal (≤1 mg L-1) and 1.41 W m-3 power generation were achieved synchronously under low COD/N (∼1.5) after the subsequent addition of acetate (100 mgCOD·L-1). The columbic efficiency of the system has increased by 15 times (from 0.64% to 9.48%) after adding acetate. Batch tests showed that the denitrification and ANAMMOX progress occurred synchronously before acetate addition the nitrogen removal rate was accelerated. A distinct shift of bacterial community driven by acetate addition was discovered. The high throughput sequencing analysis indicated acetate addition stimulated the enrichment of denitrifiers, such as Aquimonas, Bradyrhizobium, Thauera, and the potential exoelectrogens changing from Comamonas to Pseudomonas. Functional genes forecasts based on KEGG database and COG database showed that the expressions of TCA functional genes were highly promoted in ANAMMOX-MFC, which demonstrated the enhanced electron transfer pathway driven by acetate addition under low COD/N ratio.
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Affiliation(s)
- Zhiyuan Kong
- Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010031, China; Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Yongheng Zhou
- Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010031, China
| | - Zhimin Fu
- Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010031, China.
| | - Yuancan Zhang
- Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010031, China
| | - Rong Yan
- Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010031, China
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Besharat F, Ahmadpoor F, Nezafat Z, Nasrollahzadeh M, Manwar NR, Fornasiero P, Gawande MB. Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05728] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Farzaneh Besharat
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | - Fatemeh Ahmadpoor
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | - Zahra Nezafat
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | | | - Nilesh R. Manwar
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431203, India
| | - Paolo Fornasiero
- Department of Chemical and Pharmaceutical Sciences, Center for Energy, Environment and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit, ICCOM-CNR Trieste Research Unit, University of Trieste, Via Licio Giorgieri 1, I-34127 Trieste, Italy
| | - Manoj B. Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431203, India
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Selvasembian R, Mal J, Rani R, Sinha R, Agrahari R, Joshua I, Santhiagu A, Pradhan N. Recent progress in microbial fuel cells for industrial effluent treatment and energy generation: Fundamentals to scale-up application and challenges. Bioresour Technol 2022; 346:126462. [PMID: 34863847 DOI: 10.1016/j.biortech.2021.126462] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Microbial fuel cells (MFCs) technology have the potential to decarbonize electricity generation and offer an eco-friendly route for treating a wide range of industrial effluents from power generation, petrochemical, tannery, brewery, dairy, textile, pulp/paper industries, and agro-industries. Despite successful laboratory-scale studies, several obstacles limit the MFC technology for real-world applications. This review article aimed to discuss the most recent state-of-the-art information on MFC architecture, design, components, electrode materials, and anodic exoelectrogens to enhance MFC performance and reduce cost. In addition, the article comprehensively reviewed the industrial effluent characteristics, integrating conventional technologies with MFCs for advanced resource recycling with a particular focus on the simultaneous bioelectricity generation and treatment of various industrial effluents. Finally, the article discussed the challenges, opportunities, and future perspectives for the large-scale applications of MFCs for sustainable industrial effluent management and energy recovery.
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Affiliation(s)
- Rangabhashiyam Selvasembian
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamilnadu, India
| | - Joyabrata Mal
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, India
| | - Radha Rani
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, India
| | - Rupika Sinha
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, India
| | - Roma Agrahari
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, India
| | - Ighalo Joshua
- Department of Chemical Engineering, Nnamdi Azikiwe University, Nigeria
| | - Arockiasamy Santhiagu
- School of Biotechnology, National Institute of Technology Calicut, Kozhikode, Kerala, India
| | - Nirakar Pradhan
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
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8
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Wu ZY, Xu J, Wu L, Ni BJ. Three-dimensional biofilm electrode reactors (3D-BERs) for wastewater treatment. Bioresour Technol 2022; 344:126274. [PMID: 34737054 DOI: 10.1016/j.biortech.2021.126274] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Three-dimensional biofilm electrode reactors (3D-BERs) are highly efficient in refractory wastewater treatment. In comparison to conventional bio-electrochemical systems, the filled particle electrodes act as both electrodes and microbial carriers in 3D-BERs. This article reviews the conception and basic mechanisms of 3D-BERs, as well as their current development. The advantages of 3D-BERs are illustrated with an emphasis on the synergy of electricity and microorganisms. Electrode materials utilized in 3D-BERs are systematically summarized, especially the critical particle electrodes. The configurations of 3D-BERs and their integration with wastewater treatment reactors are introduced. Operational parameters and the adaptation of 3D-BERs to varieties of wastewater are discussed. The prospects and challenges of 3D-BERs for wastewater treatment are then presented, and the future research directions are proposed. We believe that this timely review will help to attract more attentions on 3D-BERs investigation, thus promoting the potential application of 3D-BERs in wastewater treatment.
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Affiliation(s)
- Zhen-Yu Wu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Juan Xu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Technology Innovation Center for Land Spatial Eco-restoration in Metropolitan Area, Ministry of Natural Resources, No. 20 Cuiniao Road, ChenJiazhen, Shanghai 202162, China.
| | - Lan Wu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
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Maddalwar S, Kumar Nayak K, Kumar M, Singh L. Plant microbial fuel cell: Opportunities, challenges, and prospects. Bioresour Technol 2021; 341:125772. [PMID: 34411941 DOI: 10.1016/j.biortech.2021.125772] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
Microbial fuel cells (MFCs) are considered as greener technologies for generation of bioenergy and simultaneously treatment of wastewater. However, the major drawback of these technologies was, rapid utilization of substrate by the microbes to generate power. This drawback is solved to a great extent by plant microbial fuel cell (PMFC) technology. Therefore, this review critically explored the challenges associated with PMFC technology and approaches to be employed for making it commercially feasible, started with brief introduction of MFCs, and PMFCs. This review also covered various factors like light intensity, carbon dioxide concentration in air, type of plant used, microbial flora in rhizosphere and also electrode material used which influence the efficiency of PMFC. Finally, this review comprehensively revealed the possibility of future intervention, such as application of biochar and preferable plants species which improve the performance of PMFC along with their opportunities challenges and prospects.
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Affiliation(s)
- Shrirang Maddalwar
- Amity Institute of Biotechnology, Amity University Chhattisgarh, Raipur 493225, India
| | - Kush Kumar Nayak
- Amity Institute of Biotechnology, Amity University Chhattisgarh, Raipur 493225, India
| | - Manish Kumar
- CSIR-National Environmental Engineering Research Institute (CSIR- NEERI), Nagpur 440020, India
| | - Lal Singh
- CSIR-National Environmental Engineering Research Institute (CSIR- NEERI), Nagpur 440020, India.
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Wang G, Xu X, Kou X, Liu X, Dong X, Ma H, Wang D. N-Doping of Graphene Aerogel as a Multifunctional Air Cathode for Microbial Fuel Cells. ACS Appl Mater Interfaces 2021; 13:51312-51320. [PMID: 34672529 DOI: 10.1021/acsami.1c12605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
One of the main challenges faced by microbial fuel cells (MFCs) generating voltage is how to facilitate the oxygen reduction reaction (ORR) process using a specifically designed air cathode, especially by optimizing a three-phase catalytic interface and enhanced O2 diffusion on it. Herein, a three-dimensional porous N-doped graphene aerogel (NGA) is polymerized onto a steel mesh (SM) to construct a simple structure of an air cathode (NGA-x/SM) via hydrothermal synthesis and subsequent freeze-drying treatment; more specifically, NGA was simultaneously used as an efficient ORR catalyst layer and breathable gas diffusion layer to improve the performance of MFCs. In this system, the NGA-5/SM (with a precursor concentration of x = 5.0 mg mL-1) makes itself a perfect candidate to be used as an air cathode. Characterization parameters reveal that sub-micrometer micropores, defective multilayer structures, and the highest proportion of pyridinic-N (48.1%) exist in NGA-5/SM. Furthermore, electrochemical measurements demonstrate that it has an oxygen reduction peak potential of 0.63 V, a Tafel slope of 187 mV dec-1, and closest 4e- transfer pathway (n = 3.2-3.5). These data prove that a three-phase boundary can naturally form in NGA-5/SM, where the ORR occurs. More importantly, this work provides a proof of concept that a Pt-free air cathode could be prepared with high-efficiency NGA by a two-step preparation method to achieve a MFC maximum power density of 1593 mW m-2.
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Affiliation(s)
- Guowen Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Xuefei Xu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Xiaonan Kou
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Xing Liu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Xiaoli Dong
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Hongchao Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian 116034, P.R. China
| | - Dong Wang
- College of Marine Science-Technology and Environment, Dalian Ocean University, No. 52 Heishijiao, Shahekou District, Dalian 116023, P.R. China
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11
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Wu ZY, Zhu WP, Liu Y, Zhou LL, Liu PX, Xu J. An integrated biological-electrocatalytic process for highly-efficient treatment of coking wastewater. Bioresour Technol 2021; 339:125584. [PMID: 34303099 DOI: 10.1016/j.biortech.2021.125584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Coking wastewater is typically refractory, mainly due to its biological toxicity and complex composition. In this study, a novel integrated biological-electrocatalytic process consisting of two three-dimensional electrochemical reactors (3DERs), two biological aerated filters (BAFs), and a three-dimensional biofilm electrode reactor (3DBER) is developed for the advanced treatment of coking wastewater. 73.21% of chemical oxygen demand (COD), 38.02% of ammonium nitrogen (NH4+-N) and 91.46% of nitrate nitrogen (NO3--N) are removed by 3DERs. BAFs mainly convert NH4+-N to NO3--N through microbial nitrification. The 3DBER removes the residual NO3--N by bio-electrochemical denitrification. The integrated system can eliminate 74.72-83.27% of COD, 99.38-99.74% of NH4+-N, and 69.64-99.83% of total nitrogen from coking wastewater during the continuous operation, as well as significantly reducing the toxicity of the wastewater. The superiorities of the integrated 3DERs/BAFs/3DBER system recommend the application of such biological-electrocatalytic technology in the treatment of highly toxic wastewater.
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Affiliation(s)
- Zhen-Yu Wu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Wei-Ping Zhu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Yang Liu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Lu-Lu Zhou
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Peng-Xi Liu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Juan Xu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China; Institute of Eco-Chongming (IEC), No. 20 Cuiniao Road, ChenJiazhen, Shanghai 202162, China.
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