期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 329, 期 -, 页码 159-165出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2017.01.043
关键词
Reactive Brilliant Red X-3B; Electric-assisted microbial system (EAMS); Degradation efficiency; Degradation pathway
资金
- Natural Science Foundation of China [51078265]
The degradations of Reactive Brilliant Red X-3B (RBRX-3B) in an electric-assisted microbial system (EAMS), a microbial system (MS) and an electrochemical system (ECS) were compared. The degradation efficiency of RBRX-3B in EAMS (99.8%) was 10.8% higher than the sum in MS (61.9%) and ECS (27.1%) at 24 h at the optimal voltage of 0.4V, indicating that there was a synergistic effect between the electrode reaction and the biodegradation. The RBRX-3B degradation in EAMS followed first-order kinetic model. The activation energy of RBRX-3B degradation in EAMS was calculated to be 60.53 kJ mol(-1) by the Arrhenius equation, showing that the degradation rate of RBRX-3B mainly depended on bio-chemical reaction. RBRX-3B was degraded to both low-strength toxic compounds and nontoxic compounds in EAMS and those intermediates were easier to be further degraded. The pathway of RBRX-3B degradation in EAMS was different from that in MS. (C) 2017 Elsevier B.V. All rights reserved.
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