四溴双酚A厌氧共代谢降解性能研究

基于厌氧共代谢原理构建反应器，分析厌氧共代谢强化四溴双酚A（TBBPA）的转化机理.研究发现，当TBBPA浓度为75μg/L时，TOC和TBBPA去除率都达到最高，分别为88.6%和81.7%；当TBBPA浓度为25μg/L时，生物半衰期最低，为21.97h.根据检测到的中间代谢单环产物3，4-二甲氧基苯甲酸甲酯和TBBPA代谢途径分析可推测TBBPA在厌氧共代谢体系中实现了深度降解，且固氮弧菌属和毛球菌属对TBBPA的厌氧生物降解起到了主要作用.

Study on the anaerobic co-metabolic biodegradation of tetrabromobisphenol A

The biodegradation of Tetrabromobisphenol A (TBBPA) using anaerobic co-metabolism was carried out and the mechanism was also explored deeply. When influent TBBPA concentration was 75μg/L, the excellent performance was obtained with TOC and TBBPA removal efficiencies of 88.6% and 81.7% respectively. The half-life of TBBPA was calculated to be 21.97h at TBBPA concentration of 25μg/L. For further study, the intermediary metabolism substances were analyzed, and methyl-3, 4-dimethoxybenzoate was detected and considered as the important single benzene ring metabolite of TBBPA, which meant the TBBPA was biodegraded deeply. Simultaneously, the microbial diversity analysis demonstrated Azoarcus and Trichococcus species were responsible for the biodegradation of TBBPA in anaerobic co-metabolism system.