Effect of copper on the performance and bacterial communities of activated sludge using Illumina MiSeq platforms
Sun, Fu-Lin; Fan, Lei-Lei; Xie, Guang-Jian; Sun, FL (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
2016
发表期刊CHEMOSPHERE
卷号156页码:212-219
摘要The anaerobic-anoxic-aerobic (A(2)O) process is a highly efficient sewage treatment method, which uses complex bacterial communities. However, the effect of copper on this process and the bacterial communities involved remains unknown. In this study, a systematic investigation of the effect of persistent exposure of copper in the A(2)O wastewater treatment system was performed. An A(2)O device was designed to examine the effect of copper on the removal efficiency and microbial community compositions of activated sludge that was continuously treated with 10, 20, and 40 mg L-1 copper, respectively. Surprisingly, a decrease in chemical oxygen demand (COD) and ammonia nitrogen (NH4-N) removal efficiency was observed, and the toxicity of high copper concentration was significantly greater at 7d than at 1d. Proteobacteria, Bacteroidetes, Acidobacteria, Chlorobi, and Nitrospirae were the dominant bacterial taxa in the A(2)O system, and significant changes in microbial community were observed during the exposure period. Most of the dominant bacterial groups were easily susceptible to copper toxicity and diversely changed at different copper concentrations. However, not all the bacterial taxa were inhibited by copper treatment. At high copper concentration, many bacterial species were stimulated and their abundance increased. Cluster analysis and principal coordinate analysis (PCoA) based on operational taxonomic units (OTUs) revealed clear differences in the bacterial communities among the samples. These findings indicated that copper severely affected the performance and key microbial populations in the A(2)O system as well as disturbed the stability of the bacterial communities in the system, thus decreasing the removal efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属[Sun, Fu-Lin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Sun, Fu-Lin] Chinese Acad Sci, South China Sea Inst Oceanol, Daya Bay Marine Biol Res Stn, Shenzhen 518121, Peoples R China; [Fan, Lei-Lei] Zunyi Normal Coll, Dept Resources & Environm, Zunyi 563002, Peoples R China; [Xie, Guang-Jian] Guangdong Ind Tech Coll, Dept Environm Engn, Guangzhou 510301, Guangdong, Peoples R China ; LTO
关键词a(2)o System Copper Microbial Community Structure Illumina Miseq Sequencing
学科领域Environmental Sciences & Ecology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15347
专题热带海洋环境国家重点实验室(LTO)
通讯作者Sun, FL (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
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GB/T 7714
Sun, Fu-Lin,Fan, Lei-Lei,Xie, Guang-Jian,et al. Effect of copper on the performance and bacterial communities of activated sludge using Illumina MiSeq platforms[J]. CHEMOSPHERE,2016,156:212-219.
APA Sun, Fu-Lin,Fan, Lei-Lei,Xie, Guang-Jian,&Sun, FL .(2016).Effect of copper on the performance and bacterial communities of activated sludge using Illumina MiSeq platforms.CHEMOSPHERE,156,212-219.
MLA Sun, Fu-Lin,et al."Effect of copper on the performance and bacterial communities of activated sludge using Illumina MiSeq platforms".CHEMOSPHERE 156(2016):212-219.
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