科研之友
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摘要
Electrochemical active biofilms (EABs) have attracted considerable attractions in bioelectrochemical systems (BESs) field for pollutants degradation from waste water. However, few studies have looked at EABs formation influenced by anode and cathode conditions. Therefore, EABs feature was investigated under different electrode conditions using a single-chamber BES. After EABs formation, the BES was effective in decolorizing the targeted pollutant azo dye, comparing to abio-electrode BESs. By analyzing the EABs microbial community compositions, anode EAB was dominated by a model electro-active Geobacter (29%), whereas the cathode EAB microbial structure was relatively closer to the inoculum with low abundance Geobacter (2.5%). This study suggested that changing the inoculum composition would be conducive to improving the cathode EAB capability for recalcitrant pollutant degradation in actual engineering applications.
