fulltext.study @t Gmail

Bioelectricity generation from chemical wastewater treatment in mediatorless (anode) microbial fuel cell (MFC) using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment

Paper ID Volume ID Publish Year Pages File Format Full-Text
4544 231 2008 10 PDF Available
Title
Bioelectricity generation from chemical wastewater treatment in mediatorless (anode) microbial fuel cell (MFC) using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment
Abstract

Bioelectricity generation from composite chemical wastewater treatment was evaluated in a dual chambered microbial fuel cell (MFC) [anode chamber (mediatorless; perforated plain graphite electrode); cathode chamber (50 mM potassium ferricyanide [K3Fe(CN)6] in phosphate buffer; pH 7.5; plain graphite electrode)] inoculated with selectively enriched hydrogen (H2) producing mixed culture under acidophilic microenvironment (pH 5.5). Anode chamber, which resembles anaerobic suspended contact reactor was fed with wastewater and operated in absence of artificial mediator at acidic environment to proliferate H2 producing bacteria. Experimental data showed the feasibility of producing bioelectricity from wastewater treatment, though power production was found to be dependent on the substrate loading rate. Maximum voltage of 271.5 mV (5.43 mA) and 304 mV (6.08 mA) was recorded at operating organic loading rates (OLR) of 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively when measured at 50 Ω external resistors at stable operating conditions. COD removal efficiency of 35.4% (substrate degradation rate (SDR) of 0.412 kg COD/(m3 day)) and 62.9% (SDR, 0.88 kg COD/(m3 day)) was observed at OLRs 1.165 kg COD/(m3 day) and 1.404 kg COD/(m3 day), respectively. Maximum specific power production of 0.163 W/kg CODR (1.165 kg COD/(m3 day); 50 Ω) and 0.198 W/kg CODR (1.404 kg COD/(m3 day); 100 Ω) was observed during stable phase of fuel cell operation. Current density of 747.96 mA/m2 (1.165 kg COD/(m3 day)) and 862.85 mA/m2 (1.404 kg COD/(m3 day)) was documented at 10 Ω. Utilizing chemical wastewater for the production of renewable energy (bioelectricity) from anaerobic treatment is considered as a feasible, economical and sustainable process.

Keywords
Bioelectricity; Microbial fuel cell (MFC); Chemical wastewater treatment; Acidophilic; Anaerobic; Biohydrogen; Mixed culture; Graphite
First Page Preview
Bioelectricity generation from chemical wastewater treatment in mediatorless (anode) microbial fuel cell (MFC) using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 39, Issue 1, 1 April 2008, Pages 121–130
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us