文献类型：期刊文献

英文题名：Cultivation of Chlorella vulgaris in sludge extracts: Nutrient removal and algal utilization

作者：Wang, Lu[1,2,3];Addy, Min[2,3];Lu, Qian[4];Cobb, Kirk[2,3];Chen, Paul[2,3];Chen, Xiurong[1];Liu, Yuhuan[4];Wang, Hualin[1];Ruan, Roger[2,3,4]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[2]Univ Minnesota, Ctr Biorefining, St Paul, MN 55108 USA;[3]Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA;[4]Nanchang Univ, Engn Res Ctr Biomass Convers, Minist Educ, Nanchang 330047, Jiangxi, Peoples R China

年份：2019

卷号：280

起止页码：505

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20190806521140);WOS:【SCI-EXPANDED(收录号:WOS:000460896800059)】；

基金：This work was supported by the Shanghai Pujiang Program in China [Grant No. 13PJD009]; the Natural Science Foundation of China [Grant No. 51378207] and the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2014ZX07202-011-002). We also would like to express our great appreciation to University of Minnesota Center for Biorefining and China Scholarship Council (CSC).

语种：英文

外文关键词：Chlorella vulgaris; Sludge extracts; Low-cost cultivation; Nutrient removal; Algal utilization

摘要：In order to utilize the excess sludge and reduce the cost of algal cultivation, Chlorella vulgaris was cultivated in increasing proportions of sludge extracts for simultaneous nutrients removal and algal utilization. Results showed that C. vulgaris cultivated in the 100% sludge extract gained the highest total biomass (33.98 +/- 0.30 x 10(6) cells/mL) and showed good results in TOC (absolute value 175 mg/L) and nutrients (TN: 77.1%; TP: 95.0%) removals. According to the Excitation-emission matrix spectra (EEMs) analysis, the 8th day was suggested as the optimal time for biomass harvesting. Although the lipid contents showed a negative correlation with the proportion of sludge extract, the FAME analysis showed that the saturated fatty acids (SFA) contents decreased and the unsaturated fatty acids (UFA) content increased as the concentration of sludge extract increased. The 100% sludge extract could be a desirable alternative medium for the algae cultivation.