微生物燃料电池
铜绿假单胞菌
突变体
生物膜
微生物学
拉伤
细菌
假单胞菌科
细菌细胞结构
化学
假单胞菌
假单胞菌
阳极
生物
生物化学
遗传学
电极
基因
物理化学
解剖
作者
Devesh Dadhich Shreeram,Daniel J. Hassett,Dale W. Schaefer
出处
期刊:Journal of Industrial Microbiology & Biotechnology
[Oxford University Press]
日期:2015-12-11
卷期号:43 (1): 103-107
被引量:20
标识
DOI:10.1007/s10295-015-1716-4
摘要
Abstract This report documents the first observation of a urine-powered microbial fuel cell operating with a genetically engineered bacterial strain. Under identical conditions, a pilT mutant of the Gram-negative bacterium Pseudomonas aeruginosa showed a 2.7-fold increase in peak power density compared to the wild-type strain, PAO1. The reduced twitching motility and hyperpiliation of the pilT mutant enhances the formation of electrogenic biofilms. For both strains, the observed high internal resistance near open-circuit voltage is attributed to sluggish redox reactions on the anode surface and not to slow bacterial metabolism. This work lays the groundwork for optimization of multiple bacterial traits leading to increased electroactive properties and opens new opportunities for urine-based mini-devices.
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