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Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load.
Biosens Bioelectron. 2009 Mar 15; 24(7):2021-7.BB

Abstract

Function of microbial fuel cell (MFC) as bio-electrochemical treatment system in concurrence with power generation was evaluated with composite chemical wastewater at high loading conditions (18.6 gCOD/l; 56.8 gTDS/l). Two dual chambered MFCs [non-catalyzed graphite electrodes; mediatorless anode] were studied separately with aerated and potassium ferricyanide catholytes under similar anodic operating conditions [mixed consortia; pH 6]. Marked improvement in power output was observed at applied higher substrate loading rate for extended period of time without any process inhibition. Catholyte nature showed significant influence on power generation [ferricyanide-651 mV; 18.22 mA; 6230 mW/kg COD(R) (500 Omega); 2321.69 mA/m(2) (100 Omega); 11.80 mW/m(3) and aerated-578 mV; 10.23mA; 2450 mW/kg COD(R) (400 Omega); 1220.68 mA/m(2) (100 Omega); 5.64 mW/m(3)] but not on wastewater treatment efficiency. Along with enhanced substrate degradation, relatively good removal of color (31%) and TDS (51%) was also observed during MFC operation, which might be attributed to the diverse bio-electrochemical processes triggered due to substrate metabolism and subsequent in situ bio-potential (voltage) generation. Apart from power generation, various unit operations pertaining to wastewater treatment viz., biological (anaerobic) process, electrochemical decomposition and electrochemical oxidation were found to occur symbiotically in the anode chamber. Among them anaerobic metabolism is considered to be a crucial and important rate limiting step. In view of inherent advantages, function of MFC as integrated bio-electrochemical treatment system in the direction of various wastewater treatment operations can be exploited.

Authors+Show Affiliations

Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500007, India.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19058958

Citation

Mohan, S Venkata, et al. "Integrated Function of Microbial Fuel Cell (MFC) as Bio-electrochemical Treatment System Associated With Bioelectricity Generation Under Higher Substrate Load." Biosensors & Bioelectronics, vol. 24, no. 7, 2009, pp. 2021-7.
Mohan SV, Raghavulu SV, Peri D, et al. Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load. Biosens Bioelectron. 2009;24(7):2021-7.
Mohan, S. V., Raghavulu, S. V., Peri, D., & Sarma, P. N. (2009). Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load. Biosensors & Bioelectronics, 24(7), 2021-7. https://doi.org/10.1016/j.bios.2008.10.011
Mohan SV, et al. Integrated Function of Microbial Fuel Cell (MFC) as Bio-electrochemical Treatment System Associated With Bioelectricity Generation Under Higher Substrate Load. Biosens Bioelectron. 2009 Mar 15;24(7):2021-7. PubMed PMID: 19058958.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load. AU - Mohan,S Venkata, AU - Raghavulu,S Veer, AU - Peri,Dinakar, AU - Sarma,P N, Y1 - 2008/11/01/ PY - 2008/08/06/received PY - 2008/10/08/revised PY - 2008/10/10/accepted PY - 2008/12/9/pubmed PY - 2009/5/27/medline PY - 2008/12/9/entrez SP - 2021 EP - 7 JF - Biosensors & bioelectronics JO - Biosens Bioelectron VL - 24 IS - 7 N2 - Function of microbial fuel cell (MFC) as bio-electrochemical treatment system in concurrence with power generation was evaluated with composite chemical wastewater at high loading conditions (18.6 gCOD/l; 56.8 gTDS/l). Two dual chambered MFCs [non-catalyzed graphite electrodes; mediatorless anode] were studied separately with aerated and potassium ferricyanide catholytes under similar anodic operating conditions [mixed consortia; pH 6]. Marked improvement in power output was observed at applied higher substrate loading rate for extended period of time without any process inhibition. Catholyte nature showed significant influence on power generation [ferricyanide-651 mV; 18.22 mA; 6230 mW/kg COD(R) (500 Omega); 2321.69 mA/m(2) (100 Omega); 11.80 mW/m(3) and aerated-578 mV; 10.23mA; 2450 mW/kg COD(R) (400 Omega); 1220.68 mA/m(2) (100 Omega); 5.64 mW/m(3)] but not on wastewater treatment efficiency. Along with enhanced substrate degradation, relatively good removal of color (31%) and TDS (51%) was also observed during MFC operation, which might be attributed to the diverse bio-electrochemical processes triggered due to substrate metabolism and subsequent in situ bio-potential (voltage) generation. Apart from power generation, various unit operations pertaining to wastewater treatment viz., biological (anaerobic) process, electrochemical decomposition and electrochemical oxidation were found to occur symbiotically in the anode chamber. Among them anaerobic metabolism is considered to be a crucial and important rate limiting step. In view of inherent advantages, function of MFC as integrated bio-electrochemical treatment system in the direction of various wastewater treatment operations can be exploited. SN - 1873-4235 UR - https://www.unboundmedicine.com/medline/citation/19058958/Integrated_function_of_microbial_fuel_cell__MFC__as_bio_electrochemical_treatment_system_associated_with_bioelectricity_generation_under_higher_substrate_load_ DB - PRIME DP - Unbound Medicine ER -