Side Yang, Kai Wang, Xin Yu, Yan Xu, Huike Ye, Mohan Bai, Lixia Zhao, Yang Sun, Xiaojing Li, Yongtao Li
Humus substances (HSs) participate in extracellular electron transfer (EET), which is unclear in heterogeneous soil. Here, a microbial electrochemical system (MES) was constructed to determine the effect of HSs, including humic acid, humin and fulvic acid, on soil electron transfer. The results showed that fulvic acid led to the optimal electron transfer efficiency in soil, as evidenced by the highest accumulated charges and removal of total petroleum hydrocarbons after 140 days, with increases of 161% and 30%, respectively, compared with those of the control...
March 19, 2024: Journal of Hazardous Materials