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Effects of sulphate addition and sulphide inhibition on microbial fuel cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
17153 42647 2013 6 PDF Available
Title
Effects of sulphate addition and sulphide inhibition on microbial fuel cells
Abstract

The effects of adding sulphate in: (i) standard activated sludge microbial fuel cells (MFCs) and (ii) larger-scale leachate-treating columns – both as individual units and as a system connected in cascade – are reported. S-replete power output was ∼2-fold higher than that of the S-deplete MFC. Furthermore, the effects of evolved sulphide (S2−) inhibition were investigated. The overall decrease in power output from the sulphide inhibitor (Na2MoO4) additions was 83% for the S-replete and 90% for the S-deplete. The second phase with the leachate treating units shows an improvement of 32–86% (depended on leachate strength) in current output as a result of adding sulphate. When leachate column MFCs were connected fluidically in series, the amount of Na2SO4 made available downstream was decreasing (increase in power was 99%, 40% and 12% for columns in cascade). Results demonstrated the beneficial effects of added sulphur sources to both activated sludge and leachate-treating MFCs.

► Current output increased significantly in both types of MFCs after SO42− addition. ► Electricity generation was demonstrated from the utilisation of pollutants. ► Results demonstrated a SO4/S2− mediated system in both sludge and leachate MFCs.

Keywords
Microbial fuel cells; Sulphate; Activated sludge; Landfill leachate; Sodium molybdate
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Effects of sulphate addition and sulphide inhibition on microbial fuel cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 52, Issue 1, 10 January 2013, Pages 32–37
Authors
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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