普通小球藻
酯交换
生物柴油
生物柴油生产
制浆造纸工业
生物燃料
生物量(生态学)
废水
化学
化学需氧量
食品科学
生物技术
环境科学
生物
植物
农学
环境工程
甲醇
生物化学
藻类
有机化学
催化作用
工程类
作者
Dian Xie,Xiaowei Ji,Youcai Zhou,Jingxuan Dai,Yongjin He,Han Sun,Zheng Guo,Yi Yang,Xing Zheng,Bilian Chen
标识
DOI:10.1016/j.biortech.2022.126886
摘要
This study firstly addressed real swine wastewater (RSW) treatment by an indigenous Chlorella vulgaris MBFJNU-1 in 5-m3 outdoor open raceway ponds and then direct enzymatic transesterification of the resulting lipids from the wet biomass for sustainable biodiesel production. Compared to the control group, C. vulgaris MBFJNU-1 at 3% CO2 achieved higher microalgal biomass (478.5 mg/L) and total fatty acids content (21.3%), higher CO2 bio-fixation (63.2 mg/L/d) and lipid (9.1 mg/L/d) productivities, and greater nutrients removals (total nitrogen, 82.1%; total phosphorus, 28.4%; chemical oxygen demand, 37.1%). The highest biodiesel conversion (93.3%) was attained by enzymatic transesterification of wet disrupted Chlorella biomass with 5% lipase TL and 5% phospholipase PLA. Moreover, the enzymatic transesterification gave around 83% biodiesel conversion in a 15-L stirred tank bioreactor. Furthermore, the integrated process was a cost-effective approach to treat RSW and mitigate CO2 for microalgal biodiesel production, based on the mass and energy balances analysis.
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