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Mahmoud RH, Samhan FA, Ibrahim MK, Ali GH, Hassan RYA. Formation of electroactive biofilms derived by nanostructured anodes surfaces. Bioprocess Biosyst Eng 2021; 44:759-768. [PMID: 33420818 DOI: 10.1007/s00449-020-02485-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/16/2020] [Indexed: 11/27/2022]
Abstract
Microbial fuel cells (MFCs) have significant interest in the research community due to their ability to generate electricity from biodegradable organic matters. Anode materials and their morphological structures play a crucial role in the formation of electroactive biofilms that enable the direct electron transfer. In this work, modified electrodes with nanomaterials, such as multiwalled carbon nanotubes (MWCNTs), reduced graphene oxide (rGO), Al2O3/rGO or MnO2/MWCNTs nanocomposites were synthesized, characterized and utilized to support the growth of electrochemically active biofilms. The MFC's performance is optimized using anode-respiring strains isolated from biofilm-anode surface, while the adjusted operation is conducted with the consortium of (Enterobacter sp.). Besides the formation of matured biofilm on its surface, MnO2/MWCNTs nanocomposite produced the highest electrical potential outputs (710 mV) combined with the highest power density (372 mW/m2). Thus, a correlation between the anode nanostructured materials and the progression of the electrochemically active biofilms formation is presented, allowing new thoughts for enhancing the MFC's performance for potential applications ranging from wastewater treatment to power sources.
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Affiliation(s)
- Rehab H Mahmoud
- Water Pollution Research Department, National Research Centre (NRC), Dokki, Giza, 12622, Egypt
| | - Farag A Samhan
- Water Pollution Research Department, National Research Centre (NRC), Dokki, Giza, 12622, Egypt
| | | | - Gamila H Ali
- Water Pollution Research Department, National Research Centre (NRC), Dokki, Giza, 12622, Egypt
| | - Rabeay Y A Hassan
- Applied Organic Chemistry Department, National Research Centre (NRC), Dokki, Giza, 12622, Egypt.
- Nanoscience Program, University of Science and Technology (UST), Zewail City of Science and Technology, 6th October City, Giza, 12578, Egypt.
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2
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Mwale S, Munyati MO, Nyirenda J. Preparation, characterization, and optimization of a porous polyaniline-copper anode microbial fuel cell. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04839-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Yao Q, Chen H, Wang S, Tang X, Gu Z, Zhang H, Chen W, Chen YQ. An efficient strategy for screening polyunsaturated fatty acid-producing oleaginous filamentous fungi from soil. J Microbiol Methods 2019; 158:80-85. [DOI: 10.1016/j.mimet.2018.12.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/26/2018] [Accepted: 12/29/2018] [Indexed: 02/05/2023]
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Xu H, Wu J, Qi L, Chen Y, Wen Q, Duan T, Wang Y. Preparation and microbial fuel cell application of sponge-structured hierarchical polyaniline-texture bioanode with an integration of electricity generation and energy storage. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1252-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Divyalakshmi P, Murugan D, Rai CL. Influence of diligent disintegration on anaerobic biomass and performance of microbial fuel cell. Biotechnol Lett 2017; 39:1883-8. [PMID: 28864941 DOI: 10.1007/s10529-017-2420-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/17/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To enhance the performance of microbial fuel cells (MFC) by increasing the surface area of cathode and diligent mechanical disintegration of anaerobic biomass. RESULTS Tannery effluent and anaerobic biomass were used. The increase in surface area of the cathode resulted in 78% COD removal, with the potential, current density, power density and coulombic efficiency of 675 mV, 147 mA m-2, 33 mW m-2 and 3.5%, respectively. The work coupled with increased surface area of the cathode with diligent mechanical disintegration of the biomass, led to a further increase in COD removal of 82% with the potential, current density, power density and coulombic efficiency of 748 mV, 229 mA m-2, 78 mW m-2 and 6% respectively. CONCLUSIONS Mechanical disintegration of the biomass along with increased surface area of cathode enhances power generation in vertical MFC reactors using tannery effluent as fuel.
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Santoro C, Arbizzani C, Erable B, Ieropoulos I. Microbial fuel cells: From fundamentals to applications. A review. J Power Sources 2017; 356:225-244. [PMID: 28717261 PMCID: PMC5465942 DOI: 10.1016/j.jpowsour.2017.03.109] [Citation(s) in RCA: 527] [Impact Index Per Article: 75.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 03/23/2017] [Indexed: 05/03/2023]
Abstract
In the past 10-15 years, the microbial fuel cell (MFC) technology has captured the attention of the scientific community for the possibility of transforming organic waste directly into electricity through microbially catalyzed anodic, and microbial/enzymatic/abiotic cathodic electrochemical reactions. In this review, several aspects of the technology are considered. Firstly, a brief history of abiotic to biological fuel cells and subsequently, microbial fuel cells is presented. Secondly, the development of the concept of microbial fuel cell into a wider range of derivative technologies, called bioelectrochemical systems, is described introducing briefly microbial electrolysis cells, microbial desalination cells and microbial electrosynthesis cells. The focus is then shifted to electroactive biofilms and electron transfer mechanisms involved with solid electrodes. Carbonaceous and metallic anode materials are then introduced, followed by an explanation of the electro catalysis of the oxygen reduction reaction and its behavior in neutral media, from recent studies. Cathode catalysts based on carbonaceous, platinum-group metal and platinum-group-metal-free materials are presented, along with membrane materials with a view to future directions. Finally, microbial fuel cell practical implementation, through the utilization of energy output for practical applications, is described.
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Affiliation(s)
- Carlo Santoro
- Department of Chemical and Biological Engineering, Center Micro-Engineered Materials (CMEM), University of New Mexico, 87106, Albuquerque, NM, USA
| | - Catia Arbizzani
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Benjamin Erable
- University of Toulouse, CNRS, Laboratoire de Génie Chimique, CAMPUS INP – ENSIACET, 4 Allée Emile Monso, CS 84234, 31432, Toulouse Cedex 4, France
| | - Ioannis Ieropoulos
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, T Block, University of the West of England, Frenchay Campus, Coldharbour Ln, Bristol, BS16 1QY, United Kingdom
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Choudhury P, Prasad Uday US, Bandyopadhyay TK, Ray RN, Bhunia B. Performance improvement of microbial fuel cell (MFC) using suitable electrode and Bioengineered organisms: A review. Bioengineered 2017; 8:471-487. [PMID: 28453385 DOI: 10.1080/21655979.2016.1267883] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
There is an urgent need to find an environment friendly and sustainable technology for alternative energy due to rapid depletion of fossil fuel and industrialization. Microbial Fuel Cells (MFCs) have operational and functional advantages over the current technologies for energy generation from organic matter as it directly converts electricity from substrate at ambient temperature. However, MFCs are still unsuitable for high energy demands due to practical limitations. The overall performance of an MFC depends on microorganism, appropriate electrode materials, suitable MFC designs, and optimizing process parameters which would accelerate commercialization of this technology in near future. In this review, we put forth the recent developments on microorganism and electrode material that are critical for the generation of bioelectricity generation. This would give a comprehensive insight into the characteristics, options, modifications, and evaluations of these parameters and their effects on process development of MFCs.
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Affiliation(s)
- Payel Choudhury
- a Department of Electrical Engineering , National Institute of Technology , Agartala , India
| | | | | | - Rup Narayan Ray
- a Department of Electrical Engineering , National Institute of Technology , Agartala , India
| | - Biswanath Bhunia
- c Department of Bio Engineering , National Institute of Technology , Agartala , India
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Abstract
Ni–ferrite-decorated anode enhanced the MPD by 26% to 806.4 mW m−2.
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Affiliation(s)
- Xinhong Peng
- Institute of Seawater Desalination and Multipurpose Utilization
- State Oceanic Administration (SOA)
- Tianjin
- P. R. China
| | - Xizhang Chu
- Institute of Seawater Desalination and Multipurpose Utilization
- State Oceanic Administration (SOA)
- Tianjin
- P. R. China
| | - Shenghui Wang
- Institute of Seawater Desalination and Multipurpose Utilization
- State Oceanic Administration (SOA)
- Tianjin
- P. R. China
| | - Ke Shan
- Institute of Seawater Desalination and Multipurpose Utilization
- State Oceanic Administration (SOA)
- Tianjin
- P. R. China
| | - Daiwang Song
- Institute of Seawater Desalination and Multipurpose Utilization
- State Oceanic Administration (SOA)
- Tianjin
- P. R. China
| | - Ya Zhou
- Institute of Chemical Industry
- Hebei University of Technology
- Tianjin 300130
- P. R. China
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Jaeel AJ, Al-wared AI, Ismail ZZ. Prediction of sustainable electricity generation in microbial fuel cell by neural network: Effect of anode angle with respect to flow direction. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.02.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lee Y, Bae S, Moon C, Lee W. Flavin mononucleotide mediated microbial fuel cell in the presence of Shewanella putrefaciens CN32 and iron-bearing mineral. BIOTECHNOL BIOPROC E 2015; 20:894-900. [DOI: 10.1007/s12257-015-0031-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Yan H, Catania C, Bazan GC. Membrane-intercalating conjugated oligoelectrolytes: impact on bioelectrochemical systems. Adv Mater 2015; 27:2958-2973. [PMID: 25846107 DOI: 10.1002/adma.201500487] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Indexed: 06/04/2023]
Abstract
Conjugated oligoelectrolytes (COEs), molecules that are defined by a π-delocalized backbone and terminal ionic pendant groups, have been previously demonstrated to effectively reduce charge-injection/extraction barriers at metal/organic interfaces in thin-film organic-electronic devices. Recent studies demonstrate a spontaneous affinity of certain COEs to intercalate into, and align within, lipid bilayers in an ordered orientation, thereby allowing modification of membrane properties and the functions of microbes in bioelectrochemical and photosynthetic systems. Several reports have provided evidence of enhanced current generation and bioproduction. Mechanistic approaches suggest that COEs influence microbial extracellular electron transport to abiotic electrode surfaces via more than one proposed pathway, including direct electron transfer and meditated electron transfer. Molecular dynamics simulations as a function of molecular structure suggest that insertion of cationic COEs results in membrane thinning as the lipid phosphate head groups are drawn toward the center of the bilayer. Since variations in molecular structures, especially the length of the conjugated backbone, distribution of ionic groups, and hydrophobic substitutions, show an effect on their antimicrobial properties, preferential cell localization, and microbial selection, it is promising to further design novel membrane-intercalating molecules based on COEs for practical applications, including energy generation, environmental remediation, and antimicrobial treatment.
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Affiliation(s)
- Hengjing Yan
- Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Chelsea Catania
- Department of Materials, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Guillermo C Bazan
- Department of Chemistry and Biochemistry, Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Materials, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
- King Abdulaziz University, Jeddah, Saudi Arabia
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Wu Y, Liu T, Li X, Li F. Exogenous electron shuttle-mediated extracellular electron transfer of Shewanella putrefaciens 200: electrochemical parameters and thermodynamics. Environ Sci Technol 2014; 48:9306-9314. [PMID: 25058026 DOI: 10.1021/es5017312] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Despite the importance of exogenous electron shuttles (ESs) in extracellular electron transfer (EET), a lack of understanding of the key properties of ESs is a concern given their different influences on EET processes. Here, the ES-mediated EET capacity of Shewanella putrefaciens 200 (SP200) was evaluated by examining the electricity generated in a microbial fuel cell. The results indicated that all the ESs substantially accelerated the current generation compared to only SP200. The current and polarization parameters were linearly correlated with both the standard redox potential (E(ES)(0)) and the electron accepting capacity (EAC) of the ESs. A thermodynamic analysis of the electron transfer from the electron donor to the electrode suggested that the EET from c-type cytochromes (c-Cyts) to ESs is a crucial step causing the differences in EET capacities among various ESs. Based on the derived equations, both E(ES)(0) and EAC can quantitatively determine potential losses (ΔE) that reflect the potential loss of the ES-mediated EET. In situ spectral kinetic analysis of ES reduction by c-Cyts in a living SP200 suspension was first investigated with the E(ES), E(c-Cyt), and ΔE values being calculated. This study can provide a comprehensive understanding of the role of ESs in EET.
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Affiliation(s)
- Yundang Wu
- Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences , Guangzhou, P. R. China
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14
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Fernández-Piñas F, Rodea-Palomares I, Leganés F, González-Pleiter M, Angeles Muñoz-Martín M. Evaluation of the ecotoxicity of pollutants with bioluminescent microorganisms. Adv Biochem Eng Biotechnol 2014; 145:65-135. [PMID: 25216953 DOI: 10.1007/978-3-662-43619-6_3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This chapter deals with the use of bioluminescent microorganisms in environmental monitoring, particularly in the assessment of the ecotoxicity of pollutants. Toxicity bioassays based on bioluminescent microorganisms are an interesting complement to classical toxicity assays, providing easiness of use, rapid response, mass production, and cost effectiveness. A description of the characteristics and main environmental applications in ecotoxicity testing of naturally bioluminescent microorganisms, covering bacteria and eukaryotes such as fungi and dinoglagellates, is reported in this chapter. The main features and applications of a wide variety of recombinant bioluminescent microorganisms, both prokaryotic and eukaryotic, are also summarized and critically considered. Quantitative structure-activity relationship models and hormesis are two important concepts in ecotoxicology; bioluminescent microorganisms have played a pivotal role in their development. As pollutants usually occur in complex mixtures in the environment, the use of both natural and recombinant bioluminescent microorganisms to assess mixture toxicity has been discussed. The main information has been summarized in tables, allowing quick consultation of the variety of luminescent organisms, bioluminescence gene systems, commercially available bioluminescent tests, environmental applications, and relevant references.
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Taskan E, Hasar H, Ozkaya B. Usage of Ti-TiO<sub>2</sub> Electrode in Microbial Fuel Cell to Enhance the Electricity Generation and its Biocompatibility. ACTA ACUST UNITED AC 2013; 404:371-6. [DOI: 10.4028/www.scientific.net/amm.404.371] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microbial fuel cell (MFC) provides the generation of electricity as bacteria on anode electrode oxidize organic content present in wastewater. This study presents simultaneously the electricity generation from two different synthetic wastewater mixtures using a new electrode in both anode and cathode compartments. Results showed that power output increased excessively in the case of Ti-TiO2 electrode. MFC reactors were mainly dominated by Geobacter, Shewanella, Pseudomonas and Clostridium species. The molecular results also demonstrated that Ti-TiO2 electrode is biocompatibility and able to be used in MFC because these species are electricity producing bacteria.
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Zhou M, Yang J, Wang H, Jin T, Xu D, Gu T. Microbial fuel cells and microbial electrolysis cells for the production of bioelectricity and biomaterials. Environ Technol 2013; 34:1915-1928. [PMID: 24350445 DOI: 10.1080/09593330.2013.813951] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Today's global energy crisis requires a multifaceted solution. Bioenergy is an important part of the solution. The microbial fuel cell (MFC) technology stands out as an attractive potential technology in bioenergy. MFCs can convert energy stored in organic matter directly into bioelectricity. MFCs can also be operated in the electrolysis mode as microbial electrolysis cells to produce bioproducts such as hydrogen and ethanol. Various wastewaters containing low-grade organic carbons that are otherwise unutilized can be used as feed streams for MFCs. Despite major advances in the past decade, further improvements in MFC power output and cost reduction are needed for MFCs to be practical. This paper analysed MFC operating principles using bioenergetics and bioelectrochemistry. Several major issues were explored to improve the MFC performance. An emphasis was placed on the use of catalytic materials for MFC electrodes. Recent advances in the production of various biomaterials using MFCs were also investigated.
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Affiliation(s)
- Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China.
| | - Jie Yang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
| | - Hongyu Wang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
| | - Tao Jin
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
| | - Dake Xu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH 45701, USA
| | - Tingyue Gu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH 45701, USA
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Abstract
Fungal arachidonic acid (ARA)-rich oil is an important microbial oil that affects diverse physiological processes that impact normal health and chronic disease. In this article, the historic developments and technological achievements in fungal ARA-rich oil production in the past several years are reviewed. The biochemistry of ARA, ARA-rich oil synthesis and the accumulation mechanism are first introduced. Subsequently, the fermentation and downstream technologies are summarized. Furthermore, progress in the industrial production of ARA-rich oil is discussed. Finally, guidelines for future studies of fungal ARA-rich oil production are proposed in light of the current progress, challenges and trends in the field.
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Affiliation(s)
- Xiao-Jun Ji
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology , Nanjing , People's Republic of China
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Kasem ET, Tsujiguchi T, Nakagawa N. Effect of Metal Modification to Carbon Paper Anodes on the Performance of Yeast-Based Microbial Fuel Cells Part Ι: In the Case without Exogenous Mediator. ACTA ACUST UNITED AC 2013; 534:76-81. [DOI: 10.4028/www.scientific.net/kem.534.76] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effect of modification of carbon paper with a thin layer of cobalt or gold on the performance of yeast-based microbial fuel cells was investigated. The modification was conducted by depositing Co or Au thin layer with different thickness, 5 nm and 30 nm, using a sputtering technique. The electrode performance was evaluated by measuring the electrode potentials and the fuel cell power output. The Co modification significantly increased the performance of the fuel cell, while the Au modification inhibited the performance. SEM observation indicated that the adhesion density of the yeast cells on the electrode surface was affected by the metals. It was confirmed that the electron transfer took place through the surface confined species at the mediatorless anode.
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Wu Y, Xiao X, Xu C, Cao D, Du D. Decolorization and detoxification of a sulfonated triphenylmethane dye aniline blue by Shewanella oneidensis MR-1 under anaerobic conditions. Appl Microbiol Biotechnol 2013; 97:7439-46. [DOI: 10.1007/s00253-012-4476-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 09/21/2012] [Accepted: 09/26/2012] [Indexed: 10/27/2022]
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Bombelli P, Zarrouati M, Thorne RJ, Schneider K, Rowden SJL, Ali A, Yunus K, Cameron PJ, Fisher AC, Ian Wilson D, Howe CJ, McCormick AJ. Surface morphology and surface energy of anode materials influence power outputs in a multi-channel mediatorless bio-photovoltaic (BPV) system. Phys Chem Chem Phys 2012; 14:12221-9. [DOI: 10.1039/c2cp42526b] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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BARRY D, WILLIAMS G. Microscopic characterisation of filamentous microbes: towards fully automated morphological quantification through image analysis. J Microsc 2011; 244:1-20. [DOI: 10.1111/j.1365-2818.2011.03506.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zeng L, Zhang L, Li W, Zhao S, Lei J, Zhou Z. Molybdenum carbide as anodic catalyst for microbial fuel cell based on Klebsiella pneumoniae. Biosens Bioelectron 2010; 25:2696-700. [DOI: 10.1016/j.bios.2010.05.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Revised: 12/26/2009] [Accepted: 05/04/2010] [Indexed: 11/16/2022]
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Zhao Y, Watanabe K, Nakamura R, Mori S, Liu H, Ishii K, Hashimoto K. Three-dimensional conductive nanowire networks for maximizing anode performance in microbial fuel cells. Chemistry 2010; 16:4982-5. [PMID: 20340117 DOI: 10.1002/chem.200903486] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yong Zhao
- ERATO/JST, HASHIMOTO Light Energy Conversion Project, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Feng C, Ma L, Li F, Mai H, Lang X, Fan S. A polypyrrole/anthraquinone-2,6-disulphonic disodium salt (PPy/AQDS)-modified anode to improve performance of microbial fuel cells. Biosens Bioelectron 2010; 25:1516-20. [DOI: 10.1016/j.bios.2009.10.009] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Revised: 09/14/2009] [Accepted: 10/10/2009] [Indexed: 12/01/2022]
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Hatayama K, Yagishita T. Regulation of glycerol metabolism in Enterobacter aerogenes NBRC12010 under electrochemical conditions. Appl Microbiol Biotechnol 2009; 83:749-56. [PMID: 19352646 DOI: 10.1007/s00253-009-1978-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Revised: 03/10/2009] [Accepted: 03/19/2009] [Indexed: 10/20/2022]
Abstract
Enterobacter aerogenes NBRC12010 was able to ferment glycerol to ethanol and hydrogen gas. Fermentation of glycerol ceased in the stationary phase of growth, and it was activated by electrochemical reactions using thionine as an electron transfer mediator from bacterial cells to an electrode. Using resting cells of E. aerogenes NBRC12010 in only citrate buffer solution, the cells did not consume glycerol at all, but they could metabolize glucose. These results suggest that the regulation of glycerol metabolism occurred at enzymatic steps before glycolysis. In E. aerogenes NBRC12010, glycerol was metabolized via glycerol dehydrogenase (GDH) and then dehydroxyacetone kinase. The GDH-catalyzed reaction mainly depended on the ratio of NAD(+)/NADH. At a NAD(+)/NADH ratio of nearly 1 or less, it was substantially suppressed and glycerol metabolism stopped. When the ratio was higher than 1, GDH was activated and glycerol was metabolized. Thus, the reaction of glycerol metabolism depended on the balance of cellular NAD(+)/NADH. Exogenous NADH was oxidized to NAD(+) by electrochemical reactions with thionine. We proposed the activation mechanism of glycerol metabolism under electrochemical conditions.
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Girotti S, Ferri EN, Fumo MG, Maiolini E. Monitoring of environmental pollutants by bioluminescent bacteria. Anal Chim Acta 2007; 608:2-29. [PMID: 18206990 DOI: 10.1016/j.aca.2007.12.008] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Revised: 12/06/2007] [Accepted: 12/09/2007] [Indexed: 11/18/2022]
Abstract
This review deals with the applications of bioluminescent bacteria to the environmental analyses, published during the years 2000-2007. The ecotoxicological assessment, by bioassays, of the environmental risks and the luminescent approaches are reported. The review includes a brief introduction to the characteristics and applications of bioassays, a description of the characteristics and applications of natural bioluminescent bacteria (BLB), and a collection of the main applications to organic and inorganic pollutants. The light-emitting genetically modified bacteria applications, as well as the bioluminescent immobilized systems and biosensors are outlined. Considerations about commercially available BLB and BLB catalogues are also reported. Most of the environmental applications, here mentioned, of luminescent organisms are on wastewater, seawater, surface and ground water, tap water, soil and sediments, air. Comparison to other bioindicators and bioassay has been also made. Various tables have been inserted, to make easier to take a rapid glance at all possible references concerning the topic of specific interest.
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Affiliation(s)
- Stefano Girotti
- Department of Metallurgic Science, Electrochemistry and Chemical Techniques, University of Bologna, Via S. Donato 15, 40127 Bologna, Italy.
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Kim BH, Chang IS, Gadd GM. Challenges in microbial fuel cell development and operation. Appl Microbiol Biotechnol 2007; 76:485-94. [PMID: 17593364 DOI: 10.1007/s00253-007-1027-4] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 05/02/2007] [Accepted: 05/21/2007] [Indexed: 11/28/2022]
Abstract
A microbial fuel cell (MFC) is a device that converts chemical energy into electricity through the catalytic activities of microorganisms. Although there is great potential of MFCs as an alternative energy source, novel wastewater treatment process, and biosensor for oxygen and pollutants, extensive optimization is required to exploit the maximum microbial potential. In this article, the main limiting factors of MFC operation are identified and suggestions are made to improve performance.
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Affiliation(s)
- Byung Hong Kim
- Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Sungbuk-gu, Seoul, 136-791, South Korea.
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Abstract
It is well established that some reduced fermentation products or microbially reduced artificial mediators can abiotically react with electrodes to yield a small electrical current. This type of metabolism does not typically result in an efficient conversion of organic compounds to electricity because only some metabolic end products will react with electrodes, and the microorganisms only incompletely oxidize their organic fuels. A new form of microbial respiration has recently been discovered in which microorganisms conserve energy to support growth by oxidizing organic compounds to carbon dioxide with direct quantitative electron transfer to electrodes. These organisms, termed electricigens, offer the possibility of efficiently converting organic compounds into electricity in self-sustaining systems with long-term stability.
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Affiliation(s)
- Derek R Lovley
- Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA.
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Park EY, Koizumi K, Higashiyama K. Analysis of Morphological Relationship Between Micro- and Macromorphology of Mortierella Species Using a Flow-Through Chamber Coupled with Image Analysis. J Eukaryot Microbiol 2006; 53:199-203. [PMID: 16677343 DOI: 10.1111/j.1550-7408.2006.00094.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using a flow-through chamber coupled with image analysis, the morphological parameters of 11 Mortierella species were quantified, and the relationship between micro- and macromorphology was investigated. On potato-dextrose-agar plates, 5 species formed rose petal-like colonies, 3 formed large round colonies, and 3 formed donut-like colonies. By observing micromorphology in a flow-through chamber, fungi were divided into 3 groups, classified according to morphological parameters: (i) a group with a high branch formation rate (q(b): tip/microm/h) and a low tip extension rate (q(tip): microm/tip/h); (ii) a group with a low branch formation rate and a high tip extension rate; and (iii) a group intermediate between the former and the latter groups. In suspension culture, group (i) fungi formed a hyphal bundle with a pulpy pellet-like morphology and a pellet core. In contrast, group (ii) fungi showed an aggregation of hyphae without the pellet core. In a narrow-specific hyphal growth rate (mu(l)) range (0.35-0.45 h(-1)), a higher branch formation rate led to increased hyphal branching, resulting in the formation of a hyphal bundle with a pulpy pellet-like morphology and a pellet core. When the branch formation rate was lower than 2 x 10(-3) tips/microm/h, the mycelia formed less branched but longer hypha. Our study surmises that a micromorphology consisting of a high hyphal growth rate (0.4 h(-1)), low tip extension rate (20 tips/microm/h), and high branch formation rate (8 x 10(-3) tips/microm/h) forms the suitable macromorphology for arachidonic acid production.
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Affiliation(s)
- Enoch Y Park
- Laboratory of Biotechnology, Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, 836 Ohya, Shizuoka 422-8529, Japan.
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Koizumi K, Higashiyama K, Park EY. Effects of amino acid on morphological development and nucleus formation of arachidonic acid-producing filamentous micro-organism, Mortierella alpina. J Appl Microbiol 2006; 100:885-92. [PMID: 16553746 DOI: 10.1111/j.1365-2672.2005.02820.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS Effects of amino acid on morphological development and nucleus formation of arachidonic acid-producing filamentous micro-organism, Mortierella alpina were investigated using flow-through chamber. METHODS AND RESULTS Mortierella alpina CBS 754.68 was cultivated in flow through chamber using nutrient-rich, minimal and specific amino acid-containing minimal media. To investigate the effect of amino acid on morphological parameters either 0.28 g l(-1) alanine, 0.53 g l(-1) sodium glutamate one hydrate or 0.42 g l(-1) valine was added to the minimal medium. In a flow-through chamber, the growth of hyphal elements and nucleus formation of arachidonic acid-producing fungus M. alpina were studied on-line, using image analysis techniques. When the Ala- and Val-containing media were used, the hyphal growth units (HGUs) were 90.2 and 86.7 microm per tip, respectively, which were 2.4-fold higher than that in the nutrient-rich medium, indicating that Ala and Val stimulate the elongation of hyphae. The specific nucleus formation rates were Glu->Val-containing media>minimal and nutrient-rich media>Ala-containing medium. The nucleus doubling times in Glu- and Val-containing media were 1.9 and 2 h, respectively, which were not significant different. CONCLUSIONS Ala and Val stimulate the elongation of M. alpina hyphae, and nucleus formation rates were Glu->Val->Ala-containing media. SIGNIFICANCE AND IMPACT OF THE STUDY Formation of fungal morphology and nucleus were shown using the flow-through chamber coupled with image analysis, which making possible to discuss the relationship between mycelial morphology and nucleus formation of M. alpina.
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Affiliation(s)
- K Koizumi
- Laboratory of Biotechnology, Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, Shizuoka, Japan
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Tang YJ, Meadows AL, Keasling JD. A kinetic model describingShewanella oneidensis MR-1 growth, substrate consumption, and product secretion. Biotechnol Bioeng 2006; 96:125-33. [PMID: 16865732 DOI: 10.1002/bit.21101] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Aerobic growth of Shewanella oneidensis MR-1 in minimal lactate medium was studied in batch cultivation. Acetate production was observed in the middle of the exponential growth phase and was enhanced when the dissolved oxygen (DO) concentration was low. Once the lactate was nearly exhausted, S. oneidensis MR-1 used the acetate produced during growth on lactate with a similar biomass yield as lactate. A two-substrate Monod model, with competitive and uncompetitive substrate inhibition, was devised to describe the dependence of biomass growth on lactate, acetate, and oxygen and the acetate growth inhibition across a broad range of concentrations. The parameters estimated for this model indicate interesting growth kinetics: lactate is converted to acetate stoichiometrically regardless of the DO concentration; cells grow well even at low DO levels, presumably due to a very low K(m) for oxygen; cells metabolize acetate (maximum specific growth rate, micro(max,A) of 0.28 h(-1)) as a single carbon source slower than they metabolize lactate (micro(max,L) of 0.47 h(-1)); and growth on acetate is self-inhibiting at a concentration greater than 10 mM. After estimating model parameters to describe growth and metabolism under six different nutrient conditions, the model was able to successfully estimate growth, oxygen and lactate consumption, and acetate production and consumption under entirely different growth conditions.
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Affiliation(s)
- Yinjie J Tang
- Synthetic Biology Department, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-3224, USA
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Lin X, Momany M. Identification and complementation of abnormal hyphal branch mutants ahbA1 and ahbB1 in Aspergillus nidulans. Fungal Genet Biol 2004; 41:998-1006. [PMID: 15465388 DOI: 10.1016/j.fgb.2004.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2004] [Accepted: 07/15/2004] [Indexed: 11/19/2022]
Abstract
Branching generates new axes of polar growth in filamentous fungi and is critical for development, reproduction, and pathogenicity. To investigate branching we screened an Aspergillus nidulans temperature-sensitive mutant collection for abnormal hyphal branch (ahb) mutants. We identified two mutants, ahbA1, which showed reduced branching relative to wild type at restrictive temperature, and ahbB1, which showed increased branching relative to wild type at restrictive temperature. Both mutants also showed abnormal conidiophore development at restrictive temperature. The ahbA1 hypobranching mutant showed defects in nuclear division and hydroxyurea resistance. Complementation and sequencing showed that ahbA1 is a previously identified allele of the cell cycle regulator nimX. The ahbB1 hyperbranching mutant had an increased number of nuclei, was osmotically remedial and Calcofluor resistant. The ahbB gene is predicted to encode a novel protein that has homologues exclusively in filamentous fungi. The C-terminal domain of the predicted AhbB protein showed homology with the heme-binding domain of a cytochrome P450 protein and sequencing of the ahbB1 mutant allele showed that the lesion lies just before this putative heme-binding domain. The ahbB1 mutant showed increased sensitivity to the ergosterol biosynthesis inhibitor imidazole. Our results suggest a link between nuclear division and branching and a possible role for membrane synthesis in branching.
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Affiliation(s)
- Xiaorong Lin
- Department of Plant Biology, University of Georgia, Athens, GA 30602, USA
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Abstract
Streptomyces setonii (ATCC 39116) is a thermophilic soil actinomycete capable of degrading single aromatic compounds including phenol and benzoate via the ortho-cleavage pathway. Previously, a 6.3-kb S. setonii DNA fragment containing a thermophilic catechol 1,2-dioxygenase (C12O) gene was isolated and functionally overexpressed in Escherichia coli (An et al., FEMS Microbiol. Lett. 195 (2001) 17-22). Here the 6.3-kb S. setonii DNA fragment was shown to be organized into two putative divergently transcribed gene clusters with six complete and one incomplete open reading frames (ORFs). The first cluster with three ORFs showed homologies to previously known benA, benB, and benC, implying it is a part of the benzoate catabolic operon. The second cluster revealed an ortho-cleavage catechol catabolic operon with three translationally coupled ORFs (in order): catR, a putative LysR-type regulatory gene; catB, a muconate cycloisomerase gene; catA, a C12O gene. Each of these individually cloned ORFs was expressed in E. coli and identified as a distinct protein. The expression of the cloned S. setonii catechol operon was induced in Streptomyces lividans by specific single aromatic compounds including catechol, phenol, and 4-chlorophenol. A similar induction pattern was also observed using a luciferase gene-fused reporter system.
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Affiliation(s)
- Hyun-Joo Park
- School of Chemical Engineering and Biotechnology, Inha University, 402-751, Incheon, South Korea
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