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High biomass yields of Chlorella protinosa with efficient nitrogen removal from secondary effluent in a membrane photobioreactor

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Journal of Environmental Sciences 2024年第12期146卷 272-282页

作者： Min Yang Zhen Liu Aijie Wang ingmar nopens Hairong Hu Hong Chen School of Civil and Environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha 410114China BIOMATH Department of Data Analysis and Mathematical ModellingGhent UniversityGent B 9000Belgium Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Materials Science and Engineering Hunan University of Science and TechnologyXiangtan 411201China

Further treatment of secondary effluents before their discharge into the receiving water bodies could alleviate water *** this study,the Chlorella proteinosa was cultured in a membrane photobioreactor to further remove nitrogen from the secondary *** effect of hydraulic retention time(HRT)on microalgae biomass yields and nutrient removal was *** results showed that soluble algal products concentration reduced in the suspension at low HRT,thereby alleviating microalgal growth *** addition,the lower HRT reduced the nitrogen limitation for Chlorella proteinosa’s growth through the phase-out of nitrogen-related functional *** a result,the productivity for Chlorella proteinosa increased from 6.12 mg/L/day at an HRT of 24 hr to 20.18 mg/L/day at an HRT of 8 *** highest removal rates of 19.7 mg/L/day,23.8 mg/L/day,and 105.4 mg/L/day were achieved at an HRT of 8 hr for total nitrogen(TN),ammonia,and chemical oxygen demand(COD),***,in terms of removal rate,TN and COD were the largest when HRT is 24 hr,which were 74.5%and 82.6%*** maximum removal rate of ammonia nitrogen was 99.2%when HRT was 8 hr.

关键词： Chlorella MPBR Fouling HRT SAP Nutrient

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