文献类型：期刊文献

英文题名：Chlorella vulgaris cultivation in sludge extracts from 2,4,6-TCP wastewater treatment for toxicity removal and utilization

作者：Wang, Lu[1];Chen, Xiurong[1];Wang, Hualin[1];Zhang, Yuying[1];Tang, Qingjie[1];Li, Jiahui[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2017

卷号：187

起止页码：146

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：;EI(收录号：20233414575329);WOS:【SCI-EXPANDED(收录号:WOS:000392037500017)】；

基金：This work was supported by the Shanghai Pujiang Program in China [Grant No. 13PJD009] and the Natural Science Foundation of China [Grant No. 51378207].

语种：英文

外文关键词：Chlorella vulgaris; Excess sludge; Sludge extracts; Ecotoxicity; Resource utilization

摘要：Chlorella vulgaris was cultivated in different proportions of activated sludge extracts, which was from the treatment of the synthetic wastewater containing 2,4,6-trichlorophenol (2,4,6-TCP). The nutrients, total nitrogen (TN) and total phosphorus (TP), were removed over 45% and 90%, respectively. The maximum reduction amount of ecotoxicity and total organic carbon (TOC) occurred in the 100% sludge group on the 8th day (68%; 86.2 mg L-1). The variations of Excitation-emission matrix spectra (EEMs) and TOC indicated that extracellular organic matters (EOM) produced by algae led to TOC increase in the medium. The cell density was close to each other for groups with sludge extract proportion below 50%; sludge extracts (below 75% addition) had a stimulating effect on the accumulation of chlorophyll-a in per unit algal cell. Superoxide dismutase (SOD) variation demonstrated that C. vulgaris response positively to sludge extracts addition. Lipid content in C vulgaris was up to its maximum value on the 8th day. Considering the performance on nutrients removal, toxicity reduction and algal growth, the optimal cultivation period for C vulgaris before harvesting was around 8 days with sludge extracts proportion below 50%. (C) 2016 Published by Elsevier B.V.