Co-Generation System of Bioethanol and Electricity with Microbial Fuel Cell Technology

作者：Jinxia Yuan, Shijie Liu, Linjing Jia, Anqi Ji, Siddharth G. Chatterjee · 发表于：Energy & Fuels · 年份：2020 · DOI：10.1021/acs.energyfuels.0c00749 · 被引用次数：30 · 研究领域：Microbial Fuel Cells and Bioremediation、Electrochemical sensors and biosensors、Supercapacitor Materials and Fabrication

A co-generation system of bioethanol and electricity using a yeast microbial fuel cell was investigated. The co-generation system was found to have a high power output (5.2 ± 0.5 W/m 3 ) and high ethanol yield (92.5 ± 2%) when traces of methylene blue (MB) (6.25 mg/L) were added. The color change of the anolyte was recorded confirming the electron transfer mechanisms in the presence of MB. In repeated batch operations, the co-generation system helped to realize yeast cell recycle. No fresh yeast was needed to be added between batches, and the co-generation system could be maintained giving a stable voltage of around 350 mV and an ethanol yield of around 90% of the theoretical yield in 96 h. The co-generation system has potential application in industrial fermentation, thus making not only a full use of the substrate for biochemical production but also producing clean energy, that is, electricity.