1
|
Li C, Qiu X, Wan H, Ma Z, Jin R, Zhao Y. Graphite-N reinforced sludge biochar electrode: A experimental and DFT theoretical analysis of efficient evolution and in-situ utilization of H 2O 2. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 355:124107. [PMID: 38729509 DOI: 10.1016/j.envpol.2024.124107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/04/2024] [Accepted: 05/02/2024] [Indexed: 05/12/2024]
Abstract
Rational reuse of municipal sludge to produce electro-Fenton electrode can not only save resources, but also produce superior peroxide and degradation pollutants simultaneously. Herein, a novel electro-Fenton electrode derived from sludge biochar loaded on Ni foam (SBC@Ni) was constructed via high temperature pyrolysis and chemical coating for efficient H2O2 evolution and pollutant degradation. Systematic experiments and density functional theory calculations (DFT calculation) explained that the production of graphite C and graphite N during high-temperature pyrolysis of municipal sludge can greatly enhance the oxygen reduction reaction of SBC@Ni electrode and promote the evolution of H2O2. And the hybrid heterojunctions, such as FeP, also played a key role in electrocatalytic processes. Notably, the electrode still exhibited excellent performance after 1000 linear scans and 12 h of continuous current stimulation, which demonstrated the excellent stability of the electrode. Moreover, SBC@Ni electrode can not only effectively oxidize 4-chlorophenol through the electro-Fenton effect, but also fully mineralize organic matter, indicating promising environmental application. The free radical quenching experiment also revealed that the ·OH is the main active species for 4-CP degradation in SBC@Ni electro-Fenton system.
Collapse
Affiliation(s)
- Chenxi Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Xiaojie Qiu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Huilin Wan
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Zehao Ma
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Ruotong Jin
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Yingxin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China.
| |
Collapse
|
2
|
Ishaq A, Said MIM, Azman SB, Abdulwahab MF, Houmsi MR, Jagun ZT. The effect of ammonia concentration on the treatment of bio electrochemical leachate using MFCs technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-31472-x. [PMID: 38151563 DOI: 10.1007/s11356-023-31472-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/06/2023] [Indexed: 12/29/2023]
Abstract
Microbial fuel cells (MFCs) have garnered attention in bio-electrochemical leachate treatment systems. The most common forms of inorganic ammonia nitrogen are ammonium ([Formula: see text]) and free ammonia. Anaerobic digestion can be inhibited in both direct (changes in environmental conditions, such as fluctuations in temperature or pH, can indirectly hinder microbial activity and the efficiency of the digestion process) and indirect (inadequate nutrient levels, or other conditions that indirectly compromise the microbial community's ability to carry out anaerobic digestion effectively) ways by both kinds. The performance of a double-chamber MFC system-composed of an anodic chamber, a cathode chamber with fixed biofilm carriers (carbon felt material), and a Nafion 117 exchange membrane is examined in this work to determine the impact of ammonium nitrogen ([Formula: see text]) inhibition. MFCs may hold up to 100 mL of fluid. Therefore, the bacteria involved were analysed using 16S rRNA. At room temperature, with a concentration of 800 mg L-1 of ammonium nitrogen and 13,225 mg L-1 of chemical oxygen demand (COD), the study produced a considerable power density of 234 mWm-3. It was found that [Formula: see text] concentrations above 800 mg L-1 have an inhibitory influence on power output and treatment effectiveness. Multiple routes removed the most nitrogen ([Formula: see text]-N: 87.11 ± 0.7%, NO2 -N: 93.17 ± 0.2% and TN: 75.24 ± 0.3%). Results from sequencing indicate that the anode is home to a rich microbial community, with anammox (6%), denitrifying (6.4%), and electrogenic bacteria (18.2%) making up the bulk of the population. Microbial fuel cells can efficiently and cost-effectively execute anammox, a green nitrogen removal process, in landfill leachate.
Collapse
Affiliation(s)
- Aliyu Ishaq
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | - Mohd Ismid Mohd Said
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | - Shamila Binti Azman
- Department of Biosciences, Faculty of Sciences, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Mohd Firdaus Abdulwahab
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | | | - Zainab Toyin Jagun
- Department of Real Estate, School of Built Environment Engineering and Computing, Leeds Beckett University, City Campus, Leeds, UK.
| |
Collapse
|
3
|
Zhou Z, Liu X, Chen R, Hu X, Guo Q. Treatment of phenolic wastewater by anaerobic fluidized bed microbial fuel cell using carbon brush as anode: microbial community analysis and m-cresol degradation mechanism. Bioprocess Biosyst Eng 2023; 46:1801-1815. [PMID: 37878182 DOI: 10.1007/s00449-023-02936-8] [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: 08/09/2023] [Accepted: 10/14/2023] [Indexed: 10/26/2023]
Abstract
Anaerobic fluidized bed microbial fuel cell (AFB-MFC) is a technology that combines fluidized bed reactor and microbial fuel cell to treat organic wastewater and generate electricity. The performance and the mechanism of treating m-cresol wastewater in AFB-MFC using carbon brush as biofilm anode were studied. After 48 h of operation, the m-cresol removal efficiency of AFB-MFC, MAR-AFB (fluidized bed bioreactor with acclimated anaerobic sludge), MAR-FB (ordinary fluidized bed reactor with only macroporous adsorptive resin) and AST (traditional anaerobic sludge treatment) were 95.29 ± 0.67%, 85.78 ± 1.81%, 71.24 ± 1.86% and 70.41 ± 0.32% respectively. The maximum output voltage and the maximum power density of AFB-MFC using carbon brush as biofilm anode were 679.7 mV and 166.6 mW/m2 respectively. The results of high-throughput sequencing analysis indicated the relative abundance of dominant electroactive bacteria, such as Trichococcus, Geobacter, and Pseudomonas, on the anode carbon brushes was higher than that of AST, and also identified such superior m-cresol-degrading bacteria as Bdellovibrio, Thermomonas, Hydrogenophaga, etc. Based on the determination of m-cresol metabolites detected by Gas Chromatography-Mass Spectrometry (GC-MS), the possible biodegradation pathway of m-cresol under anaerobic and aerobic conditions in AFB-MFC was speculated. The results showed that m-cresol was decomposed into formic acid-acetic anhydride and 3-methylpropionic acid under the action of electrochemistry, which is a simple degradation pathway without peripheral metabolism in AFB-MFC.
Collapse
Affiliation(s)
- Zhaoxin Zhou
- State Key Laboratory Base of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Xinmin Liu
- State Key Laboratory Base of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
| | - Ranran Chen
- State Key Laboratory Base of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Xiude Hu
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Qingjie Guo
- State Key Laboratory Base of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| |
Collapse
|
4
|
Mejía-López M, Lastres O, Alemán-Ramirez J, Lobato-Peralta DR, Verde A, Gámez JM, de Paz PL, Verea L. Conductive Carbon-polymer Composite for Bioelectrodes and Electricity Generation in a Sedimentary Microbial Fuel Cell. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
|
5
|
Jiang N, Song J, Yan M, Hu Y, Wang M, Liu Y, Huang M. Iron cobalt-doped carbon nanofibers anode to simultaneously boost bioelectrocatalysis and direct electron transfer in microbial fuel cells: Characterization, performance, and mechanism. BIORESOURCE TECHNOLOGY 2023; 367:128230. [PMID: 36332869 DOI: 10.1016/j.biortech.2022.128230] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
A self-supporting electrode (FeCo-MOF/CNFs) combining iron cobalt bimetallic metal-organic frameworks (FeCo-MOFs) with carbon nanofibers (CNFs) was applied as the anode of a microbial fuel cell (MFC). The introduction of FeCo-MOFs enhanced graphitization degree and electrical conductivity, which endowed FeCo-MOF/CNFs with excellent electrocatalytic performance and good biocompatibility. The hierarchical porous structure of FeCo-MOF/CNFs provided abundant attachment sites for electroactive bacteria (EAB) and facilitated rapid electron transfer. The MFC equipped with FeCo-MOF/CNFs anode (FeCo/CNFs-MFC) exhibited considerable power generation output (maximum power density: 5.3 ± 0.2 W/m2, coulombic efficiency: 54 ± 4 %). In addition, FeCo/CNFs-MFC achieved a direct electron transfer (DET) catalytic current density of 0.63 A/m2. FeCo-MOF/CNFs could simultaneously enhance the bioelectrocatalysis activity and promote the DET process of EAB, which provided an effective way to improve the sluggish extracellular electron transport process of the MFC anode.
Collapse
Affiliation(s)
- Nan Jiang
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Jialing Song
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Mengying Yan
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Yuan Hu
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Miaomiao Wang
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Yanbiao Liu
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China
| | - Manhong Huang
- College of Environmental Science and Engineering, Key Laboratory of Pollution Control and Emission Reduction Technology in Textile Industry, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
| |
Collapse
|
6
|
Omenesa Idris M, Guerrero–Barajas C, Kim HC, Ali Yaqoob A, Nasir Mohamad Ibrahim M. Scalability of biomass-derived graphene derivative materials as viable anode electrode for a commercialized microbial fuel cell: A systematic review. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
Wang SD, He LX, Zhou L, Xian SD, Liu JH. Electrochemical activation of peroxymonosulfate with titanium suboxide anode for 4-chlorophenol degradation: Influencing factors, kinetics, and degradation mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
8
|
Meng L, Feng M, Sun J, Wang R, Qu F, Yang C, Guo W. High-performance free-standing microbial fuel cell anode derived from Chinese date for enhanced electron transfer rates. BIORESOURCE TECHNOLOGY 2022; 353:127151. [PMID: 35421564 DOI: 10.1016/j.biortech.2022.127151] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Traditional anode materials have disadvantages like low specific surface area and poor electrical conductivity. Herein, carbonized Chinese dates (CCD) were synthesized as microbial fuel cells (MFC) anodes. The obtained materials exhibited excellent biocompatibility with fast start-up (within one day) and charge transfer (Rct 4.0 Ω). Their porous structure allows efficient ion transport and microbial community succession, favorable for long-term operation. The biomass analysis shows that CCD anodes can load higher weight of biomass. High-throughput sequencing (16S rRNA) discovered that CCD anode can enrich Geobacter spp., with highest abundance of 73.4%, much higher than carbon felt (CF, 39.2%). Benefit from these properties, the MFC with CCD anodes possess a maximum power density of 12.17 W m-3 (1.62 times of commercial carbon felt). In all, the CCD anode exhibits high performance with low cost and easy fabrication, certificating it a promising candidate for an ideal MFC anode material.
Collapse
Affiliation(s)
- Li Meng
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China
| | - Min Feng
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China
| | - Jinzhi Sun
- School of Life Science and Technology, Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001, China
| | - Ruiwen Wang
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Material Science and Engineering College, Northeast Forestry University, Harbin 150001, China
| | - Fengyu Qu
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China
| | - Chunyu Yang
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China
| | - Wei Guo
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China.
| |
Collapse
|
9
|
Sludge Derived Carbon Modified Anode in Microbial Fuel Cell for Performance Improvement and Microbial Community Dynamics. MEMBRANES 2022; 12:membranes12020120. [PMID: 35207042 PMCID: PMC8879649 DOI: 10.3390/membranes12020120] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 11/30/2022]
Abstract
The conversion of activated sludge into high value-added materials, such as sludge carbon (SC), has attracted increasing attention because of its potential for various applications. In this study, the effect of SC carbonized at temperatures of 600, 800, 1000, and 1200 °C on the anode performance of microbial fuel cells and its mechanism are discussed. A pyrolysis temperature of 1000 °C for the loaded electrode (SC1000/CC) generated a maximum areal power density of 2.165 ± 0.021 W·m−2 and a current density of 5.985 ± 0.015 A·m−2, which is 3.017- and 2.992-fold that of the CC anode. The addition of SC improves microbial activity, optimizes microbial community structure, promotes the expression of c-type cytochromes, and is conducive to the formation of electroactive biofilms. This study not only describes a technique for the preparation of high-performance and low-cost anodes, but also sheds some light on the rational utilization of waste resources such as aerobic activated sludge.
Collapse
|
10
|
Chakraborty I, Das S, Dubey BK, Ghangrekar MM. High-Density Polyethylene Waste-Derived Carbon as a Low-Cost Cathode Catalyst in Microbial Fuel Cell. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH 2021. [DOI: 10.1007/s41742-021-00374-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
11
|
Lu N, Li L, Wang C, Wang Z, Wang Y, Yan Y, Qu J, Guan J. Simultaneous enhancement of power generation and chlorophenol degradation in nonmodified microbial fuel cells using an electroactive biofilm carbon felt anode. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:147045. [PMID: 34088112 DOI: 10.1016/j.scitotenv.2021.147045] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 04/06/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Microbial fuel cells (MFCs) are an emerging technique presenting remarkable potential. In the current MFC, an electroactive biofilm anode was inoculated with activated sludge from a local municipal sewage treatment plant. The output voltage peaked at 0.60 V and 0.56 V in MFCs cultured with 2-chlorophenol (MFC-2-CP) and 2,4-dichlorophenol (MFC-2,4-DCP), respectively. The degradation and mineralization efficiency in MFC-2-CP were 100.0% and 82.0%, respectively. Based on the bacterial 16S rRNA gene sequence analysis, abundant Acinetobacter and Azospirillum existed during both the bioelectricity and biodegradation stages in MFC-2-CP, but different patterns were exhibited in MFC-2,4-DCP. The electrogenic bacteria relied on the electron transfer pathway of nicotinamide adenine dinucleotide dehydrogenase, succinate dehydrogenase and terminal oxidase, while the electrons were transferred to the extracellular electrode by cytochrome C, riboflavin, degradation products of CPs and flagella. 2-CP and 2,4-DCP were biodegraded into less toxic cyclohexanol via dichlorination, hydroxylation, and hydrogenation; hereafter, the ring was opened to generate long-chain hydrocarbons, and finally mineralized into CO2 and H2O. This work provided a new strategy for MFCs in power generation and contaminant treatment.
Collapse
Affiliation(s)
- Nan Lu
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Lu Li
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Chengzhi Wang
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Zirui Wang
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Yaqi Wang
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Yu Yan
- Institute of Environmental Assessment, China Northeast Municipal Engineering Design & Research Institute Co., Ltd, Changchun 130021, PR China
| | - Jiao Qu
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Jiunian Guan
- School of Environment, Northeast Normal University, Changchun 130117, PR China.
| |
Collapse
|
12
|
Gao X, Qiu S, Lin Z, Xie X, Yin W, Lu X. Carbon-Based Composites as Anodes for Microbial Fuel Cells: Recent Advances and Challenges. Chempluschem 2021; 86:1322-1341. [PMID: 34363342 DOI: 10.1002/cplu.202100292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/29/2021] [Indexed: 11/11/2022]
Abstract
Owing to the low price, chemical stability and good conductivity, carbon-based materials have been extensively applied as the anode in microbial fuel cells (MFCs). In this review, apart from the charge storage mechanism and anode requirements, the major work focuses on five categories of carbon-based anode materials (traditional carbon, porous carbon, nano-carbon, metal/carbon composite and polymer/carbon composite). The relationship is demonstrated in depth between the physicochemical properties of the anode surface/interface/bulk (porosity, surface area, hydrophilicity, partical size, charge, roughness, etc.) and the bioelectrochemical performances (electron transfer, electrolyte diffusion, capacitance, toxicity, start-up time, current, power density, voltage, etc.). An outlook for future work is also proposed.
Collapse
Affiliation(s)
- Xingyuan Gao
- Faculty of Chemistry and Material Science, Engineering Technology Development Center of Advanced Materials &, Energy Saving and Emission Reduction, in Guangdong Colleges and Universities, Guangdong University of Education, Guangzhou, 510303, P. R. China.,MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem &, Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Shuxian Qiu
- Faculty of Chemistry and Material Science, Engineering Technology Development Center of Advanced Materials &, Energy Saving and Emission Reduction, in Guangdong Colleges and Universities, Guangdong University of Education, Guangzhou, 510303, P. R. China
| | - Ziting Lin
- Faculty of Chemistry and Material Science, Engineering Technology Development Center of Advanced Materials &, Energy Saving and Emission Reduction, in Guangdong Colleges and Universities, Guangdong University of Education, Guangzhou, 510303, P. R. China
| | - Xiangjuan Xie
- Faculty of Chemistry and Material Science, Engineering Technology Development Center of Advanced Materials &, Energy Saving and Emission Reduction, in Guangdong Colleges and Universities, Guangdong University of Education, Guangzhou, 510303, P. R. China
| | - Wei Yin
- Faculty of Chemistry and Material Science, Engineering Technology Development Center of Advanced Materials &, Energy Saving and Emission Reduction, in Guangdong Colleges and Universities, Guangdong University of Education, Guangzhou, 510303, P. R. China
| | - Xihong Lu
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem &, Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| |
Collapse
|
13
|
Preparing Biochars from Cow Hair Waste Produced in a Tannery for Dye Wastewater Treatment. MATERIALS 2021; 14:ma14071690. [PMID: 33808233 PMCID: PMC8036782 DOI: 10.3390/ma14071690] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/17/2021] [Accepted: 03/20/2021] [Indexed: 11/28/2022]
Abstract
A large amount of cow hair solid waste is produced in leather production, and a reasonable treatment should be developed to reduce the pollution. In this study, cow hair waste was utilized as the carbon precursor, and N2 was determined to be the most appropriate atmosphere for biochar preparation. We performed a comparison of the properties of biochars that were prepared with different methods, including direct pyrolysis, KOH activation, and the MgO template method. The characterization results show that the highest specific surface area reaches 1753.075 m2/g. Subsequently, the keratin that was extracted from cow hair and purified was used to prepare a biochar with the MgO template method, obtaining an orderly sponge structure. The biochar from cow hair waste was further used to absorb direct blue dye wastewater, and its adsorption capacity reached 1477 mg/g after 10 h with a high efficiency of regeneration. This study successfully utilized keratin-containing hair waste and provides a new source for synthesizing carbon materials for dye wastewater treatment.
Collapse
|
14
|
Shang Y, Zhu G, Yan D, Liu Q, Gao T, Zhou G. Tannin cross-linked polyethyleneimine for highly efficient removal of hexavalent chromium. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.02.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
15
|
Yellappa M, Annie Modestra J, Rami Reddy YV, Venkata Mohan S. Functionalized conductive activated carbon-polyaniline composite anode for augmented energy recovery in microbial fuel cells. BIORESOURCE TECHNOLOGY 2021; 320:124340. [PMID: 33189040 DOI: 10.1016/j.biortech.2020.124340] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/24/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
Internal resistance is one of the limiting factors for power production in microbial fuel cells (MFC). To overcome this, current study designed polyaniline functionalized activated carbon (PANi-FAC) composite as capacitive anode with strategic electrocatalytic capability, and was comparatively assessed with SSM-PANi and bare SSM as anodes in three double chambered MFCs respectively. Power output and COD removal efficiency of PANi-FAC coated on stainless steel mesh (SSM-PANi/FAC) is superior (322 mW/m2; 87.6%) in comparison to SSM-PANi (273 mW/m2; 62.4%) and bare SSM (169 mW/m2; 54%). In addition, maximum specific capacitance of hybrid electrodes is relatively high with SSM-PANi/FAC (360.84 F/g) than SSM-PANi anode (128.26 F/g). Nyquist impedance plots showed less charge-transfer resistance (Rct) with SSM-PANi/FAC (29.9 Ω) than SSM-PANi (206.8 Ω) and SSM anodes (678 Ω). Study infers that, development of electrochemical double layer capacitance makes SSM-PANi/FAC, a potential capacitive anode for augmenting bio-electrocatalytic activity and reducing Ohmic losses.
Collapse
Affiliation(s)
- Masapogu Yellappa
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - J Annie Modestra
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Y V Rami Reddy
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| |
Collapse
|
16
|
Development and modification of materials to build cost-effective anodes for microbial fuel cells (MFCs): An overview. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107779] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|