Journal
BIORESOURCE TECHNOLOGY
Volume 263, Issue -, Pages 266-272Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.05.015
Keywords
Micro-electrical stimulation; 2,4,6-Trichlorophenol; Co-substrate; Bacterial community structure
Funding
- National Natural Science Foundation of China [U1701243, 51572089]
- Research Project of Guangdong Provincial Department of Science and Technology [2016B020240002, 2017A090905029]
- Natural Science Foundation of Guangdong Province [2015A030313232]
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This study aimed to investigate the degradation efficiency of 2,4,6-trichlorophenol through a batch of potentiostatic experiments (0.2 V vs. Ag/AgCl). Efficiencies in the presence and absence of acetate and glucose were compared through open-circuit reference experiments. Significant differences in degradation efficiency were observed in six reactors. The highest and lowest degradation efficiencies were observed in the closed-circuit reactor fed with glucose and in the open-circuit reactor, respectively. This finding was due to the enhanced bacterial metabolism caused by the application of micro-electrical field and degradable organics as co-substrates. The different treatment efficiencies were also caused by the distinct bacterial communities. The composition of bacterial community was affected by adding different organics as co-substrates. At the phylum level, the most dominant bacteria in the reactor with the added acetate and glucose were Proteobacteria and Firmicutes, respectively.
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