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Cai J, Wang Y, Al-Dhabi NA, Wu G, Pu Y, Tang W, Chen X, Jiang Y, Zeng RJ. Refining microbial potentiometric sensor performance with unique cathodic catalytic properties for targeted application scenarios. ENVIRONMENTAL RESEARCH 2024; 247:118285. [PMID: 38266896 DOI: 10.1016/j.envres.2024.118285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/26/2024]
Abstract
Traditional microbial electrochemical sensors encounter challenges due to their inherent complexity. In response to these challenges, the microbial potentiometric sensor (MPS) technology was introduced, featuring a straightforward high-impedance measurement circuit tailored for environmental monitoring. Nonetheless, the practical implementation of conventional MPS is constrained by issues such as the exposure of the reference electrode to the monitored water and the absence of methodologies to stimulate microbial metabolism. In this study, our objective was to enhance MPS performance by imbuing it with unique cathodic catalytic properties, specifically tailored for distinct application scenarios. Notably, the anodic region served as the sensing element, with both the cathodic region and reference electrode physically isolated from the analyzed water sample. In the realm of organic monitoring, the sensor without Pt/C coated in the cathodic region exhibited a faster response time (1 h) and lower detection limits (1 mg L-1 BOD, 1 mM acetic acid). Conversely, when monitoring toxic substances, the sensor with Pt/C showcased a lower detection limit (0.004% formaldehyde), while the Pt/C-free sensor demonstrated superior reusability. The sensor with Pt/C displayed a heightened anode biofilm thickness and coverage, predominantly composed of Rhodococcus. In conclusion, this study introduces simple, cost-effective, and tailorable biosensors holding substantial promise for water quality monitoring.
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Affiliation(s)
- Jiayi Cai
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yue Wang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Kingdom of Saudi Arabia
| | - Gaoying Wu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ying Pu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Wangwang Tang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
| | - Xueming Chen
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
| | - Yong Jiang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Raymond Jianxiong Zeng
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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2
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Prathiba S, Kumar PS, Vo DVN. Recent advancements in microbial fuel cells: A review on its electron transfer mechanisms, microbial community, types of substrates and design for bio-electrochemical treatment. CHEMOSPHERE 2022; 286:131856. [PMID: 34399268 DOI: 10.1016/j.chemosphere.2021.131856] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/28/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
The development in urbanization, growth in industrialization and deficiency in crude oil wealth has made to focus more for the renewable and also sustainable spotless energy resources. In the past two decades, the concepts of microbial fuel cell have caught more considerations among the scientific societies for the probability of converting, organic waste materials into bio-energy using microorganisms catalyzed anode, and enzymatic/microbial/abiotic/biotic cathode electro-chemical reactions. The added benefit with MFCs technology for waste water treatment is numerous bio-centered processes are available such as sulfate removal, denitrification, nitrification, removal of chemical oxygen demand and biological oxygen demand and heavy metals removal can be performed in the same MFC designed systems. The various factors intricate in MFC concepts in the direction of bioenergy production consists of maximum coulombic efficiency, power density and also the rate of removal of chemical oxygen demand which calculates the efficacy of the MFC unit. Even though the efficacy of MFCs in bioenergy production was initially quietly low, therefore to overcome these issues few modifications are incorporated in design and components of the MFC units, thereby functioning of the MFC unit have improvised the rate of bioenergy production to a substantial level by this means empowering application of MFC technology in numerous sectors including carbon capture, bio-hydrogen production, bioremediation, biosensors, desalination, and wastewater treatment. The present article reviews about the microbial community, types of substrates and information about the several designs of MFCs in an endeavor to get the better of practical difficulties of the MFC technology.
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Affiliation(s)
- S Prathiba
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - Dai-Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
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Wu Y, He G, Chen S, Wang Z. Three-dimensional carbon-based anodes promoted the accumulation of exoelectrogens in bioelectrochemical systems. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:997-1005. [PMID: 31891435 DOI: 10.1002/wer.1293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 06/10/2023]
Abstract
To achieve deep understandings on the effects of structure and surface properties of anode material on the performance of bioelectrochemical systems, the present research investigated the bacterial community structures of biofilms attached to different three-dimensional anodes including carbon felt and materials derived from pomelo peel, kenaf stem, and cardboard with 454 pyrosequencing analysis based on the bacterial 16S rRNA gene. The results showed that bacterial community structures, especially the relative abundance of exoelectrogens, were significantly related to the types of adopted three-dimensional anode materials. Proteobacteria was the shared predominant phylum, accounting for 55.4%, 52.1%, 66.7%, and 56.1% for carbon felt, cardboard, pomelo peel, and kenaf stem carbon, respectively. The most abundant OTU was phylogenetically related to the well-known exoelectrogen of Geobacter, with a relative abundance of 16.3%, 19.0%, 36.3%, and 28.6% in carbon felt, cardboard, pomelo peel, and kenaf stem, respectively. Moreover, another exoelectrogen of Pseudomonas sp. accounted for 4.9% in kenaf stem and 3.9% in carbonboard, respectively. The results implied the macrostructure and properties of different anode materials might result in different niches such as hydrodynamics and substrate transport dynamics, leading to different bacterial structure, especially different relative abundance of exoelectrogens, which consequently affected the performance of bioelectrochemical systems. PRACTITIONER POINTS: Bioelectrochemical systems (BESs) represent a novel biotechnology platform to simultaneously treat wastewaters and produce electrical power. Three-dimensional materials derived from nature plant as anode to promote electricity output from BESs and reduce the construct cost of BESs. Macrostructure of the three-dimensional anode material affected phylotype richness and phylogenetic diversity of microorganisms in anodic biofilm of BESs. Geobacter as well-known exoelectrogen was the most abundant in biofilm attached to three-dimensional anode.
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Affiliation(s)
- Yicheng Wu
- Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Xiamen University of Technology, Xiamen, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Guanghua He
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Shuiliang Chen
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Zejie Wang
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
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4
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Jenol MA, Ibrahim MF, Kamal Bahrin E, Abd-Aziz S. Enhanced volatile fatty acid production from sago hampas by Clostridium beijerinckii SR1 for bioelectricity generation using microbial fuel cells. Bioprocess Biosyst Eng 2020; 43:2027-2038. [PMID: 32572569 DOI: 10.1007/s00449-020-02391-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 06/13/2020] [Indexed: 12/23/2022]
Abstract
Sago hampas is a starch-based biomass from sago processing industries consisted of 58% remaining starch. This study has demonstrated the bioconversion of sago hampas to volatile fatty acids (VFAs) by Clostridium beijerinckii SR1 via anaerobic digestion. Higher total VFAs were obtained from sago hampas (5.04 g/L and 0.287 g/g) as compared to commercial starch (5.94 g/L and 0.318 g/g). The physical factors have been investigated for the enhancement of VFAs production using one-factor-at-a-time (OFAT). The optimum condition; 3% substrate concentration, 3 g/L of yeast extract concentration and 2 g/L of ammonium nitrate enhanced the production of VFAs by 52.6%, resulted the total VFAs produced is 7.69 g/L with the VFAs yield of 0.451 g/g. VFAs hydrolysate produced successfully generated 273.4 mV of open voltage circuit and 61.5 mW/m2 of power density in microbial fuel cells. It was suggested that sago hampas provide as an alternative carbon feedstock for bioelectricity generation.
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Affiliation(s)
- Mohd Azwan Jenol
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohamad Faizal Ibrahim
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Ezyana Kamal Bahrin
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Suraini Abd-Aziz
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
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Zhang X, Li X, Zhao X, Li Y. Factors affecting the efficiency of a bioelectrochemical system: a review. RSC Adv 2019; 9:19748-19761. [PMID: 35519388 PMCID: PMC9065546 DOI: 10.1039/c9ra03605a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/11/2019] [Indexed: 11/21/2022] Open
Abstract
The great potential of bioelectrochemical systems (BESs) in pollution control combined with energy recovery has attracted increasing attention.
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Affiliation(s)
- Xiaolin Zhang
- Agro-Environmental Protection Institute
- Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control
- MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety
- Tianjin 300191
- China
| | - Xiaojing Li
- Agro-Environmental Protection Institute
- Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control
- MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety
- Tianjin 300191
- China
| | - Xiaodong Zhao
- Agro-Environmental Protection Institute
- Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control
- MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety
- Tianjin 300191
- China
| | - Yongtao Li
- Agro-Environmental Protection Institute
- Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control
- MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety
- Tianjin 300191
- China
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6
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Kokko M, Epple S, Gescher J, Kerzenmacher S. Effects of wastewater constituents and operational conditions on the composition and dynamics of anodic microbial communities in bioelectrochemical systems. BIORESOURCE TECHNOLOGY 2018; 258:376-389. [PMID: 29548640 DOI: 10.1016/j.biortech.2018.01.090] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/17/2018] [Accepted: 01/19/2018] [Indexed: 06/08/2023]
Abstract
Over the last decade, there has been an ever-growing interest in bioelectrochemical systems (BES) as a sustainable technology enabling simultaneous wastewater treatment and biological production of, e.g. electricity, hydrogen, and further commodities. A key component of any BES degrading organic matter is the anode where electric current is biologically generated from the oxidation of organic compounds. The performance of BES depends on the interactions of the anodic microbial communities. To optimize the operational parameters and process design of BES a better comprehension of the microbial community dynamics and interactions at the anode is required. This paper reviews the abundance of different microorganisms in anodic biofilms and discusses their roles and possible side reactions with respect to their implications on the performance of BES utilizing wastewaters. The most important operational parameters affecting anodic microbial communities grown with wastewaters are highlighted and guidelines for controlling the composition of microbial communities are given.
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Affiliation(s)
- Marika Kokko
- Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Laboratory of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finland
| | - Stefanie Epple
- Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Johannes Gescher
- Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Sven Kerzenmacher
- Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Center for Environmental Research and Sustainable Technology (UFT), University of Bremen, Leobener Strasse 6, 28359 Bremen, Germany.
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7
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Rosales-Sierra A, Rosales-Mendoza S, Monreal-Escalante E, Celis LB, Razo-Flores E, Cercado B. Acclimation Strategy Using Complex Volatile Fatty Acid Mixtures Increases the Microbial Fuel Cell (MFC) Potential. ChemistrySelect 2017. [DOI: 10.1002/slct.201701267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alejandra Rosales-Sierra
- Facultad de Ciencias Químicas; Universidad Autónoma de San Luis Potosí. Av. Dr. Manuel Nava 6; CP 78210 San Luis Potosí Mexico
| | - Sergio Rosales-Mendoza
- Facultad de Ciencias Químicas; Universidad Autónoma de San Luis Potosí. Av. Dr. Manuel Nava 6; CP 78210 San Luis Potosí Mexico
| | - Elizabeth Monreal-Escalante
- Facultad de Ciencias Químicas; Universidad Autónoma de San Luis Potosí. Av. Dr. Manuel Nava 6; CP 78210 San Luis Potosí Mexico
| | - Lourdes B. Celis
- División de Ciencias Ambientales; Instituto Potosino de Investigación Científica y Tecnológica A. C. Camino a La Presa de San José 2055, Lomas 4 sección; CP 78216 San Luis Potosí Mexico
| | - Elías Razo-Flores
- División de Ciencias Ambientales; Instituto Potosino de Investigación Científica y Tecnológica A. C. Camino a La Presa de San José 2055, Lomas 4 sección; CP 78216 San Luis Potosí Mexico
| | - Bibiana Cercado
- División de Ciencias Ambientales; Instituto Potosino de Investigación Científica y Tecnológica A. C. Camino a La Presa de San José 2055, Lomas 4 sección; CP 78216 San Luis Potosí Mexico
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C.; Parque Tecnológico Querétaro; Sanfandila CP 76703, Pedro Escobedo Mexico
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8
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Xu P, Xiao ER, Xu D, Zhou Y, He F, Liu BY, Zeng L, Wu ZB. Internal nitrogen removal from sediments by the hybrid system of microbial fuel cells and submerged aquatic plants. PLoS One 2017; 12:e0172757. [PMID: 28241072 PMCID: PMC5328281 DOI: 10.1371/journal.pone.0172757] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/09/2017] [Indexed: 11/18/2022] Open
Abstract
Sediment internal nitrogen release is a significant pollution source in the overlying water of aquatic ecosystems. This study aims to remove internal nitrogen in sediment-water microcosms by coupling sediment microbial fuel cells (SMFCs) with submerged aquatic plants. Twelve tanks including four treatments in triplicates were designed: open-circuit (SMFC-o), closed-circuit (SMFC-c), aquatic plants with open-circuit (P-SMFC-o) and aquatic plants with closed-circuit (P-SMFC-c). The changes in the bio-electrochemical characteristics of the nitrogen levels in overlying water, pore water, sediments, and aquatic plants were documented to explain the migration and transformation pathways of internal nitrogen. The results showed that both electrogenesis and aquatic plants could facilitate the mineralization of organic nitrogen in sediments. In SMFC, electrogenesis promoted the release of ammonium from the pore water, followed by the accumulation of ammonium and nitrate in the overlying water. The increased redox potential of sediments due to electrogenesis also contributed to higher levels of nitrate in overlying water when nitrification in pore water was facilitated and denitrification at the sediment-water interface was inhibited. When the aquatic plants were introduced into the closed-circuit SMFC, the internal ammonium assimilation by aquatic plants was advanced by electrogenesis; nitrification in pore water and denitrification in sediments were also promoted. These processes might result in the maximum decrease of internal nitrogen with low nitrogen levels in the overlying water despite the lower power production. The P-SMFC-c reduced 8.1%, 16.2%, 24.7%, and 25.3% of internal total nitrogen compared to SMFC-o on the 55th, 82th, 136th, and 190th days, respectively. The smaller number of Nitrospira and the larger number of Bacillus and Pseudomonas on the anodes via high throughput sequencing may account for strong mineralization and denitrification in the sediments under closed-circuit. The coupled P-SMFC system has shown good potential for the efficient removal of internal nitrogen.
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Affiliation(s)
- Peng Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - En-Rong Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- * E-mail:
| | - Dan Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, China
| | - Yin Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Bi-Yun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Lei Zeng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhen-Bin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
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Hamamoto K, Miyahara M, Kouzuma A, Matsumoto A, Yoda M, Ishiguro T, Watanabe K. Evaluation of microbial fuel cells for electricity generation from oil-contaminated wastewater. J Biosci Bioeng 2016; 122:589-593. [DOI: 10.1016/j.jbiosc.2016.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 11/30/2022]
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10
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Marone A, Carmona-Martínez AA, Sire Y, Meudec E, Steyer JP, Bernet N, Trably E. Bioelectrochemical treatment of table olive brine processing wastewater for biogas production and phenolic compounds removal. WATER RESEARCH 2016; 100:316-325. [PMID: 27208920 DOI: 10.1016/j.watres.2016.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/25/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
Industry of table olives is widely distributed over the Mediterranean countries and generates large volumes of processing wastewaters (TOPWs). TOPWs contain high levels of organic matter, salt, and phenolic compounds that are recalcitrant to microbial degradation. This work aims to evaluate the potential of bioelectrochemical systems to simultaneously treat real TOPWs and recover energy. The experiments were performed in potentiostatically-controlled single-chamber systems fed with real TOPW and using a moderate halophilic consortium as biocatalyst. In conventional anaerobic digestion (AD) treatment, ie. where no potential was applied, no CH4 was produced. In comparison, Bio-Electrochemical Systems (BES) showed a maximum CH4 yield of 701 ± 13 NmL CH4·LTOPW(-1) under a current density of 7.1 ± 0.4 A m(-2) and with a coulombic efficiency of 30%. Interestingly, up to 80% of the phenolic compounds found in the raw TOPW (i.e. hydroxytyrosol and tyrosol) were removed. A new theoretical degradation pathway was proposed after identification of the metabolic by-products. Consistently, microbial community analysis at the anode revealed a clear and specific enrichment in anode-respiring bacteria (ARB) from the genera Desulfuromonas and Geoalkalibacter, supporting the key role of these electroactive microorganisms. As a conclusion, bioelectrochemical systems represent a promising bioprocess alternative for the treatment and energy recovery of recalcitrant TOPWs.
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Affiliation(s)
- A Marone
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
| | | | - Y Sire
- INRA, UE999 Unité Expérimentale de Pech-Rouge, 11430, Gruissan, France
| | - E Meudec
- INRA, UMR1083 Sciences pour l'œnologie, Plateforme Polyphénols, Montpellier, France
| | - J P Steyer
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
| | - N Bernet
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France.
| | - E Trably
- LBE, INRA, 102 Avenue des Etangs, Narbonne, 11100, France
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11
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Hari AR, Katuri KP, Gorron E, Logan BE, Saikaly PE. Multiple paths of electron flow to current in microbial electrolysis cells fed with low and high concentrations of propionate. Appl Microbiol Biotechnol 2016; 100:5999-6011. [PMID: 26936773 DOI: 10.1007/s00253-016-7402-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/14/2016] [Accepted: 02/16/2016] [Indexed: 11/25/2022]
Abstract
Microbial electrolysis cells (MECs) provide a viable approach for bioenergy generation from fermentable substrates such as propionate. However, the paths of electron flow during propionate oxidation in the anode of MECs are unknown. Here, the paths of electron flow involved in propionate oxidation in the anode of two-chambered MECs were examined at low (4.5 mM) and high (36 mM) propionate concentrations. Electron mass balances and microbial community analysis revealed that multiple paths of electron flow (via acetate/H2 or acetate/formate) to current could occur simultaneously during propionate oxidation regardless of the concentration tested. Current (57-96 %) was the largest electron sink and methane (0-2.3 %) production was relatively unimportant at both concentrations based on electron balances. At a low propionate concentration, reactors supplemented with 2-bromoethanesulfonate had slightly higher coulombic efficiencies than reactors lacking this methanogenesis inhibitor. However, an opposite trend was observed at high propionate concentration, where reactors supplemented with 2-bromoethanesulfonate had a lower coulombic efficiency and there was a greater percentage of electron loss (23.5 %) to undefined sinks compared to reactors without 2-bromoethanesulfonate (11.2 %). Propionate removal efficiencies were 98 % (low propionate concentration) and 78 % (high propionate concentration). Analysis of 16S rRNA gene pyrosequencing revealed the dominance of sequences most similar to Geobacter sulfurreducens PCA and G. sulfurreducens subsp. ethanolicus. Collectively, these results provide new insights on the paths of electron flow during propionate oxidation in the anode of MECs fed with low and high propionate concentrations.
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Affiliation(s)
- Ananda Rao Hari
- Biological and Environmental Sciences and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Krishna P Katuri
- Biological and Environmental Sciences and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Eduardo Gorron
- Biological and Environmental Sciences and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Bruce E Logan
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Pascal E Saikaly
- Biological and Environmental Sciences and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
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12
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Pous N, Carmona-Martínez AA, Vilajeliu-Pons A, Fiset E, Bañeras L, Trably E, Balaguer MD, Colprim J, Bernet N, Puig S. Bidirectional microbial electron transfer: Switching an acetate oxidizing biofilm to nitrate reducing conditions. Biosens Bioelectron 2016; 75:352-8. [DOI: 10.1016/j.bios.2015.08.035] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/02/2015] [Accepted: 08/17/2015] [Indexed: 11/24/2022]
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13
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Electron flux and microbial community in microbial fuel cells (open-circuit and closed-circuit modes) and fermentation. ACTA ACUST UNITED AC 2015; 42:979-83. [DOI: 10.1007/s10295-015-1629-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
Abstract
Abstract
A closed-circuit microbial fuel cell (C-MFC) was operated to investigate the electron flux under fed-batch mode, and the results were compared to those of open-circuit MFC (O-MFC) and a fermentation reactor (F-reactor). The current was the largest electron sink (52.7 % of influent SCOD) in C-MFC, whereas biomass and methane gas were the most significant electron sinks in O-MFC and F-reactor. Interestingly, some of the unknown sink may have accumulated in the electrode of O-MFC. Principal component analysis based on gradient gel electrophoresis profiles showed that the microbial communities were significantly affected by the growth conditions and the presence of electrode, regardless of the circuit connection. Therefore, the electrode and circuit mode might help to control the amount of biomass and enhance the MFC performance.
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Co-occurence of Crenarchaeota, Thermoplasmata and methanogens in anaerobic sludge digesters. World J Microbiol Biotechnol 2015; 31:805-12. [PMID: 25739565 DOI: 10.1007/s11274-015-1834-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/27/2015] [Indexed: 10/23/2022]
Abstract
16S rRNA Crenarchaeota and Thermoplasmata sequences retrieved from 22 anaerobic digesters were analysed. 4.8 and 0.53 % of archaeal sequences were simultaneously affiliated to these lineages. A core of 2 operational taxonomic units (OTUs) representing 0.6 to -33.6 % of all archaeal sequences were defined for the Crenarchaeotes and identified to already known but not yet cultivable organisms in almost half of the digesters sampled. For the Thermoplasmata, apparently less abundant with 0.7 to -4.7 % of the archaeal sequences, 3 OTUs were identified. We showed here that Crenarchaeotes coexist with methanogens and are particularly abundant when Arch I lineage (also called WSA2 by Hugenholtz) is dominant in digesters. Moreover, Thermoplasmata were detected when Crenarchaeota were present. Interactions between methanogens, Crenarchaeotea and Thermoplamata were thus discussed.
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Lee JZ, Logan A, Terry S, Spear JR. Microbial response to single-cell protein production and brewery wastewater treatment. Microb Biotechnol 2014; 8:65-76. [PMID: 24837420 PMCID: PMC4321374 DOI: 10.1111/1751-7915.12128] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 03/20/2014] [Accepted: 03/28/2014] [Indexed: 11/28/2022] Open
Abstract
As global fisheries decline, microbial single-cell protein (SCP) produced from brewery process water has been highlighted as a potential source of protein for sustainable animal feed. However, biotechnological investigation of SCP is difficult because of the natural variation and complexity of microbial ecology in wastewater bioreactors. In this study, we investigate microbial response across a full-scale brewery wastewater treatment plant and a parallel pilot bioreactor modified to produce an SCP product. A pyrosequencing survey of the brewery treatment plant showed that each unit process selected for a unique microbial community. Notably, flow equalization basins were dominated by Prevotella, methanogenesis effluent had the highest levels of diversity, and clarifier wet-well samples were sources of sequences for the candidate bacterial phyla of TM7 and BD1-5. Next, the microbial response of a pilot bioreactor producing SCP was tracked over 1 year, showing that two different production trials produced two different communities originating from the same starting influent. However, SCP production resulted generally in enrichment of several clades of rhizospheric diazotrophs of Alphaproteobacteria and Betaproteobacteria in the bioreactor and even more so in the final product. These diazotrophs are potentially useful as the basis of a SCP product for commercial feed production.
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Affiliation(s)
- Jackson Z Lee
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
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16
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Temperature impacts on anaerobic biotransformation of LNAPL and concurrent shifts in microbial community structure. Biodegradation 2014; 25:569-85. [DOI: 10.1007/s10532-014-9682-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 01/10/2014] [Indexed: 10/25/2022]
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Sun Y, Wei J, Liang P, Huang X. Microbial community analysis in biocathode microbial fuel cells packed with different materials. AMB Express 2012; 2:21. [PMID: 22458430 PMCID: PMC3349616 DOI: 10.1186/2191-0855-2-21] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 03/29/2012] [Indexed: 11/10/2022] Open
Abstract
Biocathode MFCs using microorganisms as catalysts have important advantages in lowering cost and improving sustainability. Electrode materials and microbial synergy determines biocathode MFCs performance. In this study, four materials, granular activated carbon (GAC), granular semicoke (GS), granular graphite (GG) and carbon felt cube (CFC) were used as packed cathodic materials. The microbial composition on each material and its correlation with the electricity generation performance of MFCs were investigated. Results showed that different biocathode materials had an important effect on the type of microbial species in biocathode MFCs. The microbes belonging to Bacteroidetes and Proteobacteria were the dominant phyla in the four materials packed biocathode MFCs. Comamonas of Betaproteobacteria might play significant roles in electron transfer process of GAC, GS and CFC packed biocathode MFCs, while in GG packed MFC Acidovorax may be correlated with power generation. The biocathode materials also had influence on the microbial diversity and evenness, but the differences in them were not positively related to the power production.
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Sun Y, Wei J, Liang P, Huang X. Electricity generation and microbial community changes in microbial fuel cells packed with different anodic materials. BIORESOURCE TECHNOLOGY 2011; 102:10886-10891. [PMID: 21983409 DOI: 10.1016/j.biortech.2011.09.038] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Revised: 09/09/2011] [Accepted: 09/10/2011] [Indexed: 05/31/2023]
Abstract
Four materials, carbon felt cube (CFC), granular graphite (GG), granular activated carbon (GAC) and granular semicoke (GS) were tested as packed anodic materials to seek a potentially practical material for microbial fuel cells (MFCs). The microbial community and its correlation with the electricity generation performance of MFCs were explored. The maximum power density was found in GAC, followed by CFC, GG and GS. In GAC and CFC packed MFCs, Geobacter was the dominating genus, while Azospira was the most populous group in GG. Results further indicated that GAC was the most favorable for Geobacter adherence and growth, and the maximum power densities had positive correlation with the total biomass and the relative abundance of Geobacter, but without apparent correlation with the microbial diversity. Due to the low content of Geobacter in GS, power generated in this system may be attributed to other microorganisms such as Synergistes, Bacteroidetes and Castellaniella.
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Affiliation(s)
- Yanmei Sun
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
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