Continuous biomass and lipid production from local chlorella-bacteria consortium in raw wastewater using volatile fatty acids

文献类型： 外文期刊

第一作者： Zuo, Yongmei

作者： Zuo, Yongmei;Zhang, Xiaodong;Wu, Zhe;Wongsnansilp, Tassnapa;Chen, Guiping

作者机构：

关键词： Lipid and biomass; Microalgae-bacteria; Mixotrophic culture; Volatile fatty acids; Wastes fermentation

期刊名称：BIOTECHNOLOGY LETTERS （ 影响因子：2.461； 五年影响因子：2.457 ）

ISSN： 0141-5492

年卷期： 2020 年 42 卷 8 期

页码：

收录情况： SCI

摘要： Objectives To evaluate mixotrophic cultivation of microalgae-bacteria consortium in raw wastewater by stepwise addition of fermented effluent containing volatile fatty acids (VFAs). Results Stepwise increase of VFAs enhanced algal biomass and lipid production, ammonia and phosphate removals. The highest biomass and lipid yield were 1.94 g L-1 and 310 mg L-1 when the addition of fermented effluent containing VFAs increased to 30% (v/v). With the same cultivation conditions, the maximum removals efficiency of ammonia and phosphate were 26.4 and 11.3 mg L-1 d(-1). Bacterial diversities increased with the increasing concentration of VFAs and their communities were identified as phyla Actinobacteria, Bacteroidetes, Cyanobacteria and Proteobacteria. Conclusions Although bacterial quantities increased with algae growth concurrently, the objective of culturing microalgae-bacteria consortium in raw wastewater without sterilization to produce biomass and lipid yield still can be realized.

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