51
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Wang H, Luo H, Fallgren PH, Jin S, Ren ZJ. Bioelectrochemical system platform for sustainable environmental remediation and energy generation. Biotechnol Adv 2015; 33:317-34. [DOI: 10.1016/j.biotechadv.2015.04.003] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 03/29/2015] [Accepted: 04/06/2015] [Indexed: 10/23/2022]
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52
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Nguyen VK, Hong S, Park Y, Jo K, Lee T. Autotrophic denitrification performance and bacterial community at biocathodes of bioelectrochemical systems with either abiotic or biotic anodes. J Biosci Bioeng 2015; 119:180-7. [DOI: 10.1016/j.jbiosc.2014.06.016] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 06/02/2014] [Accepted: 06/24/2014] [Indexed: 11/28/2022]
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53
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Hossini H, Rezaee A, Ayati B, Mahvi AH. Simultaneous nitrification and denitrification using a polypyrrole/microbial cellulose electrode in a membraneless bio-electrochemical system. RSC Adv 2015. [DOI: 10.1039/c5ra09771a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
In this study, the feasibility of ammonium and total nitrogen removal from aqueous solution using a simultaneous nitrification and denitrification process was studied in a membraneless bio-electrochemical system with a novel electrode.
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Affiliation(s)
- Hooshyar Hossini
- Environmental Health Department
- Faculty of Medical Sciences
- Tarbiat Modares University
- Tehran
- Iran
| | - Abbas Rezaee
- Environmental Health Department
- Faculty of Medical Sciences
- Tarbiat Modares University
- Tehran
- Iran
| | - Bita Ayati
- Department of Environmental Engineering
- Faculty of Civil & Environmental Engineering
- Tarbiat Modares University
- Tehran
- Iran
| | - Amir Hossein Mahvi
- Center for Solid Waste Research
- Institute for Environmental Research
- Tehran University of Medical Science
- Tehran
- Iran
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54
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Tao Q, Zhou S. Effect of static magnetic field on electricity production and wastewater treatment in microbial fuel cells. Appl Microbiol Biotechnol 2014; 98:9879-87. [DOI: 10.1007/s00253-014-6136-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/01/2014] [Accepted: 10/04/2014] [Indexed: 10/24/2022]
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55
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Safari M, Rezaee A, Ayati B, Jonidi-Jafari A. Bio-electrochemical reduction of nitrate utilizing MWCNT supported on carbon base electrodes: A comparison study. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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56
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Zhang G, Zhang H, Ma Y, Yuan G, Yang F, Zhang R. Membrane filtration biocathode microbial fuel cell for nitrogen removal and electricity generation. Enzyme Microb Technol 2014; 60:56-63. [DOI: 10.1016/j.enzmictec.2014.04.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/01/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
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57
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Kondaveeti S, Lee SH, Park HD, Min B. Bacterial communities in a bioelectrochemical denitrification system: the effects of supplemental electron acceptors. WATER RESEARCH 2014; 51:25-36. [PMID: 24388828 DOI: 10.1016/j.watres.2013.12.023] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/29/2013] [Accepted: 12/16/2013] [Indexed: 05/05/2023]
Abstract
Electrochemical treatment of nitrate (NO3(-)), nitrite (NO2(-)) and mixtures of nitrate and nitrite was evaluated with microbial catalysts on a cathode in three different bioelectrochemical denitrification systems (BEDS). The removal rates and removal percentage of nitrogen (N) compounds varied during biotic and abiotic operations. The biotic cathode using NO3(-)-N as an electron acceptor showed enhanced removal percentages (88%) compared to the operation with NO2(-)-N (85%). The simultaneous reduction of NO3(-)-N and NO2(-)-N occurred in the operation with a mixture of N compounds. The bacterial diversity from the initial inoculum (return sludge) changed at the end of bioelectrochemical denitrification operation after 55 days. The microbial community composition was different depending on the type of electron acceptor. BEDS operation with NO3(-)-N and NO2(-)-N was enriched with Proteobacteria and Firmicutes respectively. BEDS with a mixture of N electron acceptors showed enrichment with Proteobacteria. There was no clear, distinct microbial community between the cathode biofilm and suspended biomass.
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Affiliation(s)
- Sanath Kondaveeti
- Department of Environmental Science and Engineering, Kyung Hee University, Gyeonggi-do, South Korea
| | - Sang-Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea.
| | - Booki Min
- Department of Environmental Science and Engineering, Kyung Hee University, Gyeonggi-do, South Korea.
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58
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Kelly PT, He Z. Nutrients removal and recovery in bioelectrochemical systems: a review. BIORESOURCE TECHNOLOGY 2014; 153:351-60. [PMID: 24388692 DOI: 10.1016/j.biortech.2013.12.046] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/08/2013] [Accepted: 12/11/2013] [Indexed: 05/03/2023]
Abstract
Nutrient removal and recovery has received less attention during the development of bioelectrochemical systems (BES) for energy efficient wastewater treatment, but it is a critical issue for sustainable wastewater treatment. Both nitrogen and phosphorus can be removed and/or recovered in a BES through involving biological processes such as nitrification and bioelectrochemical denitrification, the NH4(+)/NH3 couple affected by the electrolyte pH, or precipitating phosphorus compounds in the high-pH zone adjacent a cathode electrode. This paper has reviewed the nutrients removal and recovery in various BES including microbial fuel cells and microbial electrolysis cells, discussed the influence factors and potential problems, and identified the key challenges for nitrogen and phosphorus removal/recovery in a BES. It expects to give an informative overview of the current development, and to encourage more thinking and investigation towards further development of efficient processes for nutrient removal and recovery in a BES.
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Affiliation(s)
- Patrick T Kelly
- Department of Civil Engineering and Mechanics, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, USA
| | - Zhen He
- Via Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
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59
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Du Y, Feng Y, Dong Y, Qu Y, Liu J, Zhou X, Ren N. Coupling interaction of cathodic reduction and microbial metabolism in aerobic biocathode of microbial fuel cell. RSC Adv 2014. [DOI: 10.1039/c4ra03441d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Certain mixed consortia colonized on aerobic biocathodes can improve the 4-electron oxygen reduction of cathodes; however, the coupling interaction of the cathodic reaction and microbial metabolism remains unclear.
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Affiliation(s)
- Yue Du
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
| | - Yujie Feng
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
| | - Yue Dong
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
| | - Youpeng Qu
- School of Life Science and Technology
- Harbin Institute of Technology
- Harbin 150080, China
| | - Jia Liu
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
| | - Xiangtong Zhou
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090, China
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60
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Van Doan T, Lee TK, Shukla SK, Tiedje JM, Park J. Increased nitrous oxide accumulation by bioelectrochemical denitrification under autotrophic conditions: kinetics and expression of denitrification pathway genes. WATER RESEARCH 2013; 47:7087-7097. [PMID: 24210359 DOI: 10.1016/j.watres.2013.08.041] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 08/07/2013] [Accepted: 08/27/2013] [Indexed: 06/02/2023]
Abstract
Under autotrophic conditions, we investigated the effects of different current densities on bioelectrochemical denitrification (BED). In this study, nitrate consumption and nitrous oxide (N2O) production, microbial diversity and population dynamics, and denitrification pathway gene expressions were explored in continuous flow BED reactors at different current densities (0.2, 1, 5, 10 and 20 A/m(2)). We found that, under the autotrophic conditions, N2O accumulation was increased with increase in current density. The maximum rate of denitrification was 1.65 NO3(-)-N (g/NCCm(3).h), and approximately 70% of the reduced N was accumulated as N2O. After each current density was applied, pyrosequencing of the expressed 16S rRNA genes amplified from the cathodic biofilms revealed that that 16 genera were active and in common at all currents, and that eight of those showed a statistically significant correlation with particular current densities. The relative expression of napA and narG was highest, whereas nosZ was low relative to its level in the inoculum suggesting that this could have contributed the high N2O accumulation. Kinetic analysis of nitrate reduction and N2O accumulation followed Michaelis-Menten kinetics. The Vmax for nitrate consumption and N2O accumulation were similar, however the Km values determined as A/m(2) were not. This study provides better understanding of the community and kinetics of a current-fed, autotrophic, cathodic biofilm for evaluating its potential for scale-up and for N2O recovery.
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Affiliation(s)
- Tuan Van Doan
- School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, Republic of Korea
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61
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Sajana T, Ghangrekar M, Mitra A. Application of sediment microbial fuel cell for in situ reclamation of aquaculture pond water quality. AQUACULTURAL ENGINEERING 2013. [DOI: 10.1016/j.aquaeng.2013.09.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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62
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Hao R, Li S, Li J, Meng C. Denitrification of simulated municipal wastewater treatment plant effluent using a three-dimensional biofilm-electrode reactor: operating performance and bacterial community. BIORESOURCE TECHNOLOGY 2013; 143:178-186. [PMID: 23792757 DOI: 10.1016/j.biortech.2013.06.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/30/2013] [Accepted: 06/01/2013] [Indexed: 06/02/2023]
Abstract
A three-dimensional biofilm-electrode reactor (3D-BER) was applied for nitrate removal from simulated municipal wastewater treatment plant (WWTP) effluent. It was found that when the influent C/N ratio ranged from 1.0 to 2.0, both heterotrophic and autotrophic denitrifying microorganisms played important roles in nitrate removal. The extension of hydraulic retention time (HRT) could enhance nitrate removal, but too long HRT was not necessary. A phylogenetic tree of gene sequences in biofilm was established, and the biofilm was abundant with Thauera-like and Enterobacter-like bacteria. The results illustrated that 3D-BER is a feasible and effective technology for the denitrification of WWTP effluent with poor organic carbon source. A nitrate removal of 98.3% was obtained with C/N ratio of 3.0 and HRT of 7h. About 85.0-90.0% of nitrate removal was found at a C/N ratio of 1.5 and HRT of 10h due to cooperative heterotrophic and autotrophic denitrification.
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Affiliation(s)
- Ruixia Hao
- Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
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63
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Vilar-Sanz A, Puig S, García-Lledó A, Trias R, Balaguer MD, Colprim J, Bañeras L. Denitrifying bacterial communities affect current production and nitrous oxide accumulation in a microbial fuel cell. PLoS One 2013; 8:e63460. [PMID: 23717427 PMCID: PMC3662693 DOI: 10.1371/journal.pone.0063460] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 04/03/2013] [Indexed: 11/22/2022] Open
Abstract
The biocathodic reduction of nitrate in Microbial Fuel Cells (MFCs) is an alternative to remove nitrogen in low carbon to nitrogen wastewater and relies entirely on microbial activity. In this paper the community composition of denitrifiers in the cathode of a MFC is analysed in relation to added electron acceptors (nitrate and nitrite) and organic matter in the cathode. Nitrate reducers and nitrite reducers were highly affected by the operational conditions and displayed high diversity. The number of retrieved species-level Operational Taxonomic Units (OTUs) for narG, napA, nirS and nirK genes was 11, 10, 31 and 22, respectively. In contrast, nitrous oxide reducers remained virtually unchanged at all conditions. About 90% of the retrieved nosZ sequences grouped in a single OTU with a high similarity with Oligotropha carboxidovorans nosZ gene. nirS-containing denitrifiers were dominant at all conditions and accounted for a significant amount of the total bacterial density. Current production decreased from 15.0 A·m−3 NCC (Net Cathodic Compartment), when nitrate was used as an electron acceptor, to 14.1 A·m−3 NCC in the case of nitrite. Contrarily, nitrous oxide (N2O) accumulation in the MFC was higher when nitrite was used as the main electron acceptor and accounted for 70% of gaseous nitrogen. Relative abundance of nitrite to nitrous oxide reducers, calculated as (qnirS+qnirK)/qnosZ, correlated positively with N2O emissions. Collectively, data indicate that bacteria catalysing the initial denitrification steps in a MFC are highly influenced by main electron acceptors and have a major influence on current production and N2O accumulation.
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Affiliation(s)
- Ariadna Vilar-Sanz
- Molecular Microbial Ecology Group, Institute of Aquatic Ecology, Universitat de Girona, Girona, Spain
| | - Sebastià Puig
- LEQUIA, Institute of the Environment, Universitat de Girona, Girona, Spain
| | - Arantzazu García-Lledó
- Molecular Microbial Ecology Group, Institute of Aquatic Ecology, Universitat de Girona, Girona, Spain
| | - Rosalia Trias
- Molecular Microbial Ecology Group, Institute of Aquatic Ecology, Universitat de Girona, Girona, Spain
| | - M. Dolors Balaguer
- LEQUIA, Institute of the Environment, Universitat de Girona, Girona, Spain
| | - Jesús Colprim
- LEQUIA, Institute of the Environment, Universitat de Girona, Girona, Spain
| | - Lluís Bañeras
- Molecular Microbial Ecology Group, Institute of Aquatic Ecology, Universitat de Girona, Girona, Spain
- * E-mail:
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64
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Zhang G, Zhang H, Zhang C, Zhang G, Yang F, Yuan G, Gao F. Simultaneous nitrogen and carbon removal in a single chamber microbial fuel cell with a rotating biocathode. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.03.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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65
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Cai J, Zheng P, Zhang J, Xie Z, Li W, Sun P. Simultaneous anaerobic sulfide and nitrate removal coupled with electricity generation in Microbial Fuel Cell. BIORESOURCE TECHNOLOGY 2013; 129:224-228. [PMID: 23247150 DOI: 10.1016/j.biortech.2012.11.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 10/30/2012] [Accepted: 11/01/2012] [Indexed: 06/01/2023]
Abstract
Two-chamber Microbial Fuel Cells (MFC) using graphite rods as electrodes were operated for simultaneous anaerobic sulfide and nitrate removal coupled with electricity generation. The MFC showed good ability to remove substrates. When the influent sulfide and nitrate concentrations were 780 mg/L and 135.49 mg/L, respectively, the removal percentages of sulfide and nitrate were higher than 90% and the main end products were nitrogen and sulfate. The MFC also showed good ability to generate electricity, and the voltage went up with the rise of influent substrate concentrations. When the external resistance was 1000 Ω, its highest steady voltage was 71 mV. Based on the linear relationship between the electrons released by substrates and accepted by electrode, it was concluded that the electricity generation was coupled with the substrate conversion in the MFC.
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Affiliation(s)
- Jing Cai
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
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66
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Coma M, Puig S, Pous N, Balaguer MD, Colprim J. Biocatalysed sulphate removal in a BES cathode. BIORESOURCE TECHNOLOGY 2013; 130:218-223. [PMID: 23313666 DOI: 10.1016/j.biortech.2012.12.050] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 12/05/2012] [Accepted: 12/08/2012] [Indexed: 06/01/2023]
Abstract
Sulphate reduction in a biological cathode and physically separated from biological organic matter oxidation has been studied in this paper. The bioelectrochemical system was operated as microbial fuel cell (for bioelectricity production) to microbial electrolysis cell (with applied voltage). Sulphate reduction was not observed without applied voltage and only resulted when the cathodic potential was poised at -0.26V vs. SHE, with a minimum energy requirement of 0.7V, while maximum removal occurred at 1.4V applied. The reduction of sulphate led to sulphide production, which was entrapped in the ionic form thanks to the high biocathode pH (i.e. pH of 10) obtained during the process.
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Affiliation(s)
- M Coma
- LEQUIA, Institute of the Environment, University of Girona, Campus Montilivi, E-17071 Girona, Catalonia, Spain
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67
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Mook WT, Aroua MKT, Chakrabarti MH, Noor IM, Irfan MF, Low CTJ. A review on the effect of bio-electrodes on denitrification and organic matter removal processes in bio-electrochemical systems. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2012.07.004] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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68
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Zhang Y, Angelidaki I. Bioelectrode-based approach for enhancing nitrate and nitrite removal and electricity generation from eutrophic lakes. WATER RESEARCH 2012; 46:6445-6453. [PMID: 23034447 DOI: 10.1016/j.watres.2012.09.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 07/08/2012] [Accepted: 09/08/2012] [Indexed: 06/01/2023]
Abstract
Nitrate and nitrite contamination of surface waters (e.g. lakes) has become a severe environmental and health problem, especially in developing countries. The recent demonstration of nitrate reduction at the cathode of microbial fuel cell (MFC) provides an opportunity to develop a new technology for nitrogen removal from surface waters. In this study, a sediment-type MFC based on two pieces of bioelectrodes was employed as a novel in situ applicable approach for nitrogen removal, as well as electricity production from eutrophic lakes. Maximum power density of 42 and 36 mW/m(2) was produced respectively from nitrate- and nitrite-rich synthetic lake waters at initial concentration of 10 mg-N/L. Along with the electricity production a total nitrogen removal of 62% and 77% was accomplished, for nitrate and nitrite, respectively. The nitrogen removal was almost 4 times higher under close-circuit condition with biocathode, compared to either the open-circuit operation or with abiotic cathode. The mass balance on nitrogen indicates that most of the removed nitrate and nitrite (84.7 ± 0.1% and 81.8 ± 0.1%, respectively) was reduced to nitrogen gas. The nitrogen removal and power generation was limited by the dissolved oxygen (DO) level in the water and acetate level injected to the sediment. Excessive oxygen resulted in dramatically decrease of nitrogen removal efficiency and only 7.8% removal was obtained at DO level of 7.8 mg/l. The power generation and nitrogen removal increased with acetate level and was nearly saturated at 0.84 mg/g-sediment. This bioelectrode-based in situ approach is attractive not only due to the electricity production, but also due to no need of extra reactor construction, which may broaden the application possibilities of sediment MFC technology.
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Affiliation(s)
- Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark
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69
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Cheng KY, Ginige MP, Kaksonen AH. Ano-cathodophilic biofilm catalyzes both anodic carbon oxidation and cathodic denitrification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:10372-10378. [PMID: 22931060 DOI: 10.1021/es3025066] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Biocathodic denitrification using bioelectrochemical systems (BES) have shown promise for both wastewater and groundwater treatment. Typically, these systems involve anodic carbon oxidation and cathodic denitrification catalyzed by two electroactive biofilms located separately at an anode and a cathode. However, process efficiencies are often limited by pH drifts in the respective electrode-biofilms: acidification (pH <5.5) in the bioanode and basification (pH >8.5) in the biocathode. Here, we describe for the first time a single electroactive biofilm that acts as a bioanode and a biocathode, alternately catalyzing anodic acetate oxidation (Coulombic efficiency (CE) 85.3%) and cathodic denitrification (CE 87.3%) (-400 mV Ag/AgCl). Our results indicate that the ano-cathodophilic biofilm denitrified autotrophically using the electrode (-200 to -600 mV Ag/AgCl) as a direct electron donor. Further, the alkalinity produced from cathodic denitrification partially (19%) neutralized the acidity of the anodic reaction. Switching the electrode potential to temporarily favor either an anodic or cathodic reaction may represent a unique method for removing carbon and nitrate from contaminated liquors. This study offers new insights into the development of sustainable BES-based nutrient removal processes.
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Affiliation(s)
- Ka Yu Cheng
- CSIRO Land and Water, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Floreat, WA, Australia.
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70
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Su W, Zhang L, Li D, Zhan G, Qian J, Tao Y. Dissimilatory nitrate reduction byPseudomonas alcaliphilawith an electrode as the sole electron donor. Biotechnol Bioeng 2012; 109:2904-10. [DOI: 10.1002/bit.24554] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 03/23/2012] [Accepted: 05/01/2012] [Indexed: 01/21/2023]
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71
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Deng H, Chen Z, Zhao F. Energy from plants and microorganisms: progress in plant-microbial fuel cells. CHEMSUSCHEM 2012; 5:1006-1011. [PMID: 22162418 DOI: 10.1002/cssc.201100257] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 10/06/2011] [Indexed: 05/31/2023]
Abstract
Plant-microbial fuel cells (PMFCs) are newly emerging devices, in which electricity can be generated by microorganisms that use root exudates as fuel. This review presents the development of PMFCs, with a summary of their power generation, configurations, plant types, anode and cathode materials, biofilm communities, potential applications, and future directions.
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Affiliation(s)
- Huan Deng
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, P.O. 361021, P.R. China
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72
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Nitrite as a candidate substrate in microbial fuel cells. Biotechnol Lett 2012; 34:1483-6. [DOI: 10.1007/s10529-012-0939-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
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73
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Puig S, Coma M, Desloover J, Boon N, Colprim J, Balaguer MD. Autotrophic denitrification in microbial fuel cells treating low ionic strength waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:2309-15. [PMID: 22257136 DOI: 10.1021/es2030609] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The presence of elevated concentrations of nitrates in drinking water has become a serious concern worldwide. The use of autotrophic denitrification in microbial fuel cells (MFCs) for waters with low ionic strengths (i.e., 1000 μS·cm(-1)) has not been considered previously. This study evaluated the feasibility of MFC technology for water denitification and also identified and quantified potential energy losses that result from their usage. The low conductivity (<1600 μS·cm(-1)) of water limited the nitrogen removal efficiency and power production of MFCs and led to the incomplete reduction of nitrate and the nitrous oxide (N(2)O) production (between 4 and 20% of nitrogen removed). Cathodic overpotential was identified as the main energy loss factors (83-90% of total losses). That high overpotential was influenced by denitrification intermediates (NO(2)(-) and N(2)O) and the potential used by microorganisms for growth, activation, and maintenance.
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Affiliation(s)
- Sebastià Puig
- Laboratory of Chemical and Environmental Engineering (LEQUiA), Institute of the Environment, University of Girona, Campus Montilivi s/n, Facultat de Ciències, E-17071 Girona, Spain.
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74
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Desloover J, Puig S, Virdis B, Clauwaert P, Boeckx P, Verstraete W, Boon N. Biocathodic nitrous oxide removal in bioelectrochemical systems. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:10557-66. [PMID: 22070656 DOI: 10.1021/es202047x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Anthropogenic nitrous oxide (N(2)O) emissions represent up to 40% of the global N(2)O emission and are constantly increasing. Mitigation of these emissions is warranted since N(2)O is a strong greenhouse gas and important ozone-depleting compound. Until now, only physicochemical technologies have been applied to mitigate point sources of N(2)O, and no biological treatment technology has been developed so far. In this study, a bioelectrochemical system (BES) with an autotrophic denitrifying biocathode was considered for the removal of N(2)O. The high N(2)O removal rates obtained ranged between 0.76 and 1.83 kg N m(-3) net cathodic compartment (NCC) d(-1) and were proportional to the current production, resulting in cathodic coulombic efficiencies near 100%. Furthermore, our experiments suggested the active involvement of microorganisms as the catalyst for the reduction of N(2)O to N(2), and the optimal cathode potential ranged from -200 to 0 mV vs standard hydrogen electrode (SHE) in order to obtain high conversion rates. Successful operation of the system for more than 115 days with N(2)O as the sole cathodic electron acceptor strongly indicated that N(2)O respiration yielded enough energy to maintain the biological process. To our knowledge, this study provides for the first time proof of concept of biocathodic N(2)O removal at long-term without the need for high temperatures and expensive catalysts.
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Affiliation(s)
- Joachim Desloover
- Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium
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Mohan SV, Srikanth S. Enhanced wastewater treatment efficiency through microbially catalyzed oxidation and reduction: synergistic effect of biocathode microenvironment. BIORESOURCE TECHNOLOGY 2011; 102:10210-10220. [PMID: 21920735 DOI: 10.1016/j.biortech.2011.08.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/05/2011] [Accepted: 08/06/2011] [Indexed: 05/31/2023]
Abstract
Microbially catalyzed treatment of wastewater was evaluated in both the anode and cathode chambers in dual chambered microbial fuel cell (MFC) under varying biocathode microenvironment. MFC operation with aerobic biocathode showed significant increment in both TDS (cathode, 90.2±1%; anode, 39.7±0.5%) and substrate (cathode, 98.07±0.06%; anode, 96.2±0.3%) removal compared to anaerobic biocathode and abiotic cathode operations (COD, 80.25±0.3%; TDS, 30.5±1.2%). Microbially catalyzed reduction of protons and electrons at cathode will be higher during aerobic biocathode operation which leads to gradual substrate removal resulting in stable bio-potential for longer periods facilitating salts removal. Bio-electro catalytic behavior showed higher exchange current density during aerobic biocathode operation resulting in induced electrochemical oxidation which supports the enhanced treatment. Anaerobic biocathode operation depicted relatively less TDS removal (anode, 16.35%; cathode, 16.04%) in both the chambers in spite of good substrate degradation (anode, 84%; cathode, 87.39%). Both the chambers during anaerobic biocathode operation competed as electron donors resulting in negligible bio-potential development.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500 607, India.
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Ma B, Zhang S, Zhang L, Yi P, Wang J, Wang S, Peng Y. The feasibility of using a two-stage autotrophic nitrogen removal process to treat sewage. BIORESOURCE TECHNOLOGY 2011; 102:8331-8334. [PMID: 21719278 DOI: 10.1016/j.biortech.2011.06.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Revised: 05/31/2011] [Accepted: 06/04/2011] [Indexed: 05/31/2023]
Abstract
The feasibility of using a two-stage autotrophic nitrogen removal process to treat sewage was examined in this study. The obtained results showed that total nitrogen (TN) could be efficiently removed by 88.38% when influent TN and chemical oxygen demand (COD) were 45.87 and 44.40 mg/L, respectively. In the first stage, nitritation was instantly achieved by the bioaugmentation strategy, and can be maintained under limited oxygen condition (below 0.2mg/L). The ratio of nitrite to ammonium in the effluent of the nitritation reactor can be controlled at approximate 1.0 by adjusting aeration rate. In the second stage, anammox was realized in the upflow anaerobic sludge blanket (UASB) reactor, where the total nitrogen removal rate was 0.40 kg Nm(-3)d(-1) under limited-substrate condition. Therefore, the organic matter in sewage can be firstly concentrated in biomass which could generate biogas (energy). Then, nitrogen in sewage could be removed in a two-stage autotrophic nitrogen removal process.
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Affiliation(s)
- Bin Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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