文献类型：期刊文献

英文题名：Effects of elevated 4-chlorophenol loads on components of polysaccharides and proteins and toxicity in an activated sludge process

作者：Zhao, Jianguo[1];Chen, Xiurong[2];Wang, Lu[2];Xu, Yan[2];Li, Jiahui[2];Li, Yahe[3]

机构：[1]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 450001, Henan, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[3]Ningbo Univ, Key Lab Marine Biotechnol Zhejiang, Minist Educ, Key Lab Appl Marine Biotechnol, Ningbo 315211, Zhejiang, Peoples R China

年份：2017

卷号：330

起止页码：236

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20173104010559);WOS:【SCI-EXPANDED(收录号:WOS:000414083300023)】；

基金：This study was financially supported by the Natural Science Foundation (No. 51378207) and the Special S&T Project on Treatment and Control of Water Pollution (No. 2014ZX07202-011-002) in China.

语种：英文

外文关键词：4-Chlorophenol; Sludge components; Sludge toxicity; Proteomics; Sequencing batch bioreactor

摘要：In this study, the effects of elevated influent 4-chlorophenol (4-CP) loads on components of polysaccharides and proteins and toxicity as well as their correlation in an activated sludge process were investigated. The toxicity in sludge was evaluated via a luminescent bacterium acute toxicity bioassay. Activated sludge, which was gradually acclimated via elevating influent 4-CP loads in a sequencing batch bioreactor (SBR), was used as the acclimated SBR. Another operated SBR without influent 4-CP was used as the control SBR. Results showed that after activated sludge was successfully acclimated with 10 mg/L influent 4-CP, the influence of gradually elevated 4-CP loads on acclimated SBR was insignificant and the influent 4-CP was quickly degraded. However, the main components of polysaccharides and proteins in activated sludge had a significant change and the sludge toxicity basically increased with the elevated influent 4-CP loads. The correlation between the proteins and toxicity in activated sludge was significantly higher than that of the correlation between the polysaccharides and toxicity at different influent 4-CP loads. Proteomics analysis indicated that the up-regulated proteins in acclimated SBR directly or indirectly played a significant role in degrading 4-CP, resisting 4-CP toxicity and reducing sludge toxicity. (C) 2017 Elsevier B.V. All rights reserved.