文献类型：期刊文献

英文题名：Cultivation of Chlorella vulgaris in sludge extract from resorcinol-rich wastewater: the removal and inhibitory effect of sludge toxicity

作者：Chen, Xiurong[1,2];Zhou, Tianjun[1,2];Wang, Xiaoxiao[1,2];Xu, Peng[1,2];Yang, Chenchen[1,2];Sun, Xiaoli[1,2];Lu, Quanling[1,2];Wang, Shanshan[1,2]

机构：[1]East China Univ Sci & Technol, Protect Key Lab Environm Risk Assessment & Contro, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, NELHROWTT, Shanghai, Peoples R China

年份：2019

卷号：94

期号：4

起止页码：1240

外文期刊名：JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

收录：;EI(收录号：20190406421891);WOS:【SCI-EXPANDED(收录号:WOS:000461237300025)】；

基金：This research was supported by the National Key Research and Development Program of China (2017YFB0602804), the Major Projects of Science and Technology (no. 2014ZX07202-011) in China, the National Natural Science Foundation (no. 51378207), the Shanghai Pujiang Programme (no. 13PJD009) and the Fundamental Research Funds for the Central Universities (222201817009).

语种：英文

外文关键词：sludge toxicity; Chlorella vulgaris; toxic inhibition; toxicity removal; proteomics

摘要：BACKGROUND The cultivation of Chlorella vulgaris present in toxic sludge extract from resorcinol-rich wastewater was investigated to simultaneously determine the biomass production and toxicity removal. RESULTS A comparison of the blank and the toxic sludge extract revealed that the sludge toxicity originating from the degradation of resorcinol was highly correlated to the mass fraction at 5000-10000 Da (R = 0.987, P = 0.013) and led to a decline in biomass (1.49 g L-1 to 1.36 g L-1 in 30 days) along with a reduced utilization rate of organics in the sludge extract, especially in the early stage (0-5 days) of culture. The effects of sludge toxicity were characterized by the downregulation of proteins associated with carbon (C) metabolism and the upregulation of proteins involved in photoreaction by proteomics. CONCLUSION The sludge toxicity directly caused a decline in biomass production of C. vulgaris resulting from the downregulation of C metabolism. However, the promotion of biomass for heterotrophism was more significant than the inhibitory effect in the toxic sludge extract when compared with BG11 medium. (c) 2018 Society of Chemical Industry