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Phasic availability of terminal electron acceptor on oxygen reduction reaction in microbial fuel cell.
Bioresour Technol. 2017 Oct; 242:101-108.BT

Abstract

Oxygen-reduction reactions (ORR) plays a pivotal role in determining microbial fuel cells (MFC) performance. In this study, an attempt to determine the influence of the phasic availability of terminal electron acceptor (TEA) on ORR was made. Two MFCs operated with dissolved oxygen (MFC-DC) and air (MFC-SC) as TEA were constructed and analyzed in continuous mode under open and closed circuit conditions. The bio-electrochemical analysis showed a marked influence of dissolved oxygen resulting in a maximum power density with MFC-DC (769mW/m2) compared to MFC-SC (684mW/m2). The availability of O2 in dissolved phase has lowered the activation losses during the MFC operation as a result of effective ORR. The cyclic voltammetry analysis revealed the TEA dependent biocatalyst activity of NADH and cytochrome complex which enabled electron transfer kinetics and improved substrate utilization. Finally, the study evidenced the critical role of TEA phasic availability to regulate the bio-electrogenic and substrate degradation potential in MFC.

Authors+Show Affiliations

Bioengineering and Environmental Science Lab (BEES), EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.Bioengineering and Environmental Science Lab (BEES), EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.Sustainable Environergy Research Lab (SERL), Department of Chemical Engineering, Indian Institute of Technology Delhi (IITD), New Delhi 110016, India.Bioengineering and Environmental Science Lab (BEES), EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. Electronic address: vmohan_s@yahoo.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28495054

Citation

Shanthi Sravan, J, et al. "Phasic Availability of Terminal Electron Acceptor On Oxygen Reduction Reaction in Microbial Fuel Cell." Bioresource Technology, vol. 242, 2017, pp. 101-108.
Shanthi Sravan J, Butti SK, Verma A, et al. Phasic availability of terminal electron acceptor on oxygen reduction reaction in microbial fuel cell. Bioresour Technol. 2017;242:101-108.
Shanthi Sravan, J., Butti, S. K., Verma, A., & Venkata Mohan, S. (2017). Phasic availability of terminal electron acceptor on oxygen reduction reaction in microbial fuel cell. Bioresource Technology, 242, 101-108. https://doi.org/10.1016/j.biortech.2017.04.032
Shanthi Sravan J, et al. Phasic Availability of Terminal Electron Acceptor On Oxygen Reduction Reaction in Microbial Fuel Cell. Bioresour Technol. 2017;242:101-108. PubMed PMID: 28495054.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phasic availability of terminal electron acceptor on oxygen reduction reaction in microbial fuel cell. AU - Shanthi Sravan,J, AU - Butti,Sai Kishore, AU - Verma,Anil, AU - Venkata Mohan,S, Y1 - 2017/04/09/ PY - 2017/01/29/received PY - 2017/04/06/revised PY - 2017/04/07/accepted PY - 2017/5/13/pubmed PY - 2017/11/7/medline PY - 2017/5/13/entrez KW - Bio-electro catalyzed reduction KW - Bioelectrochemical systems (BES) KW - Bioremediation KW - Oxidation reduction reaction (ORR) KW - Power systems SP - 101 EP - 108 JF - Bioresource technology JO - Bioresour. Technol. VL - 242 N2 - Oxygen-reduction reactions (ORR) plays a pivotal role in determining microbial fuel cells (MFC) performance. In this study, an attempt to determine the influence of the phasic availability of terminal electron acceptor (TEA) on ORR was made. Two MFCs operated with dissolved oxygen (MFC-DC) and air (MFC-SC) as TEA were constructed and analyzed in continuous mode under open and closed circuit conditions. The bio-electrochemical analysis showed a marked influence of dissolved oxygen resulting in a maximum power density with MFC-DC (769mW/m2) compared to MFC-SC (684mW/m2). The availability of O2 in dissolved phase has lowered the activation losses during the MFC operation as a result of effective ORR. The cyclic voltammetry analysis revealed the TEA dependent biocatalyst activity of NADH and cytochrome complex which enabled electron transfer kinetics and improved substrate utilization. Finally, the study evidenced the critical role of TEA phasic availability to regulate the bio-electrogenic and substrate degradation potential in MFC. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/28495054/Phasic_availability_of_terminal_electron_acceptor_on_oxygen_reduction_reaction_in_microbial_fuel_cell_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(17)30513-8 DB - PRIME DP - Unbound Medicine ER -