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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51890

Title: Effects of mediator producer and dissolved oxygen on electricity generation in a baffled stacking microbial fuel cell treating high strength molasses wastewater
Authors: Shih-Hsien Chang
Chih-Hung Wu
Dong-Kai Chang
Chi-Wen Lin
Contributors: 國立臺灣海洋大學:地球科學研究所
Keywords: Microbial fuel cells (MFCs)
Molasses wastewater
Electrochemical active bacteriaPyocyanin
Dissolved oxygen (DO)
Date: 2014-07
Issue Date: 2019-01-03T03:28:39Z
Publisher: International Journal of Hydrogen Energy
Abstract: Abstract: The effects of Pseudomonas aeruginosa, pyocyanin, and influent dissolved oxygen (DO) on the electricity generation in a baffled stacking microbial fuel cell (MFC) treating high strength molasses wastewater were investigated. The result shows that the influent chemical oxygen demand (COD) of 500–1000 mg l−1 had the optimal substrate-energy conversion rate. The addition of a low density of P. aeruginosa (8.2 mg l−1) or P. aeruginosa with pyocyanin improved the COD removal and power generation. This improvement could be attributed to the enhancement of electron transfer with the help of redox mediators. Influent DO at a concentration of up to 1.22 mg l−1 did not inhibit the electricity generation. Large proportions of COD, organic-N and total-N were removed by the MFC. The MFC effluent was highly biodegradable. Denaturing gradient gel electrophoresis analysis shows that the added pyocyanin resided in the MFC for up to 14 days. An analysis of anode voltage reveals that microbial proton transport to the cathode was importantly responsible for the internal resistance.
Relation: 39(22) pp.11722-11730
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51890
Appears in Collections:[應用地球科學研究所] 期刊論文

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