2-巯基苯并噻唑在微生物电解槽中的降解：中间体、毒性和微生物群落
Degradation of 2-mercaptobenzothizaole in microbial electrolysis cells: intermediates, toxicity, and microbial communities
摘要：
化合物2-巯基苯并噻唑（MBT）经常在废水和地表水中检测到，对水生生物和人类健康都是一种潜在威胁（其致突变潜力已得到证实）。研究了MBT在微生物电解槽阳极中的降解途径及降解菌群。结果表明，与裸阳极相比，石墨烯改性的阳极促进了更富集、更发达和更特异的群落的存在。此外，仅在配备有石墨烯处理的电极的反应器中检测到向MBT的苯环连续添加OH取代基。这两种现象，连同外部电压的施加，可能与在配备有石墨烯改性的阳极的MEC中观察到的生物毒性的较大降低（46.2eqtox/m3至27.9eqtox/m3）有关。
英文摘要：
The compound 2-mercaptobenzothizaole (MBT) has been frequently detected in wastewater and surface water and is a potential threat to both aquatic organisms and human health (its mutagenic potential has been demonstrated). This study investigated the degradation routes of MBT in the anode of a microbial electrolysis cell (MEC) and the involved microbial communities. The results indicated that graphene-modified anodes promoted the presence of more enriched, developed, and specific communities compared to bare anodes. Moreover, consecutive additions of the OH substituent to the benzene ring of MBT were only detected in the reactor equipped with the graphene-treated electrode. Both phenomena, together with the application of an external voltage, may be related to the larger reduction of biotoxicity observed in the MEC equipped with graphene-modified anodes (46.2 eqtox/m3 to 27.9 eqtox/m3).
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