【摘 要】
:
In this study, benzothiazole was entirely mineralized by an up-flow internal circulation microbial electrolysis reactor. The bioelectrochemical system was opera
【机 构】
:
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology;
【出 处】
:
Journal of Harbin Institute of Technology(New series)
【基金项目】
:
Sponsored by the National Natural Science Fund of China(Grant No.51778175);the National Key R&D Plan(Grant No.2016YFC0401105);the Provincial Nature Science Foundation of Heilongjiang(Grant No.E20160
论文部分内容阅读
In this study, benzothiazole was entirely mineralized by an up-flow internal circulation microbial electrolysis reactor. The bioelectrochemical system was operated at ambient temperature under continuous-flow mode. The analysis of metabolite which was extracted by HPLC-MS from the bioreactor indicated that benzothiazole derivative(BTH) was firstly converted into 2-hydroxybenzothiazole in the microbial electrolysis cell(MEC) and then mineralized within three steps, i.e., the fracture of thiazole-ring through a series of oxidation and hydrolysis, the deamination and hydroxylation of 2-aminobenzenesulfonic acid, and the mineralization of various carboxylic acids to CO2 and H2O. Bacterial community analysis indicated that the applied electric field could selectively enrich certain species and the dominate bacteria on the electrodes belonged to Proteobacteria, Bacteroidetes, and Firmicutes. Results show that MEC can improve the degradation efficiency of BTH in wastewater, enable the microbiological reactor to satisfy the requirements of high loading rate, thereby fulfilling the scale-up of whole process in the future.
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