Microalgae cultivation using unsterilized cattle farm wastewater filtered through corn stover

被引：29
作者：
Wang, Zhongjiang
Wang, Ziyue
Wang, Guixiang
Zhou, Zheng
Hao, Shimin
Wang, Lili
机构：
[1] College of Engineering, Northeast Agricultural University, Harbin
来源：
BIORESOURCE TECHNOLOGY | 2022年 / 352卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Cattle farm wastewater; Corn stover filtration; Light intensity; Microalgae growth kinetics; Microalgae cultivation; NUTRIENT REMOVAL; CHLORELLA SP; BIODIESEL PRODUCTION; ALGAE CULTIVATION; PIGGERY; GROWTH; VULGARIS; PHOTOSYNTHESIS; ECOTOXICITY; WASTEWATERS;
D O I：
10.1016/j.biortech.2022.127081
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The aim of this study was to investigate the cultivation of Chlorella sp. (FACHB-8) and Kirchneriella obesa (FACHB2104) using the unsterilized cattle farm wastewater (CFW) filtered through corn stover. Corn stover filtration effectively reduced the turbidity and suspended solids of CFW and improved the adaptability of microalgae to CFW. The yields of microalgae supplemented with filtered CFW were significantly higher than those of micro algae supplemented with unfiltered CFW-by 14%-57% (FACHB-8) and 12%-78% (FACHB-2104) and comparable to those with pure blue-green algae medium (BG11). The growth kinetics of microalgae conformed to the DoseResp model. A 3:6 ratio of filtered CFW to BG11 and an 8000 lx light intensity were optimal for achieving high microalgae production. Under optimum conditions, the maximal yields of FACHB-8 and FACHB-2104 were 1.26 and 1.22 g/L, respectively, and the removal efficiencies of nitrogen, phosphorus, and chemical oxygen demand exceeded 95%, 99%, and 82%, respectively.
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页数：11
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