title: Mixotrophic cultivation of Chlorella pyrenoidosa with diluted primary piggery wastewater to produce lipids.
abstract: Piggery wastewater that is used for microalgae cultivation has usually been treated by secondary treatment processes. The present study investigates mixotrophic cultivation of the green microalgae Chlorella pyrenoidosa with primary piggery wastewater that has merely been diluted before use. The biomass productivity of the microalgae exhibited a positive linear correlation with the initial COD values, which ranged from 250 to 1000 mg/L. Nutrients in the piggery wastewater were removed efficiently; for example, the removal rate of ammonium was over 90% in all diluted samples. Profiles of fatty acids in the algal lipids were different after cultivation in piggery wastewater medium compared to Bristol's solution. The maximum lipid productivity of 6.3 mg L(-1) day(-1), which was achieved when the initial COD was 1000 mg/L, is not superior to other reports, but it suggests a convenient way to reduce the high organic content of piggery waste with the production of algal lipids.
authors: Key Lab for Microorganisms and Biotransformation, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China. whyzxb@163.com
authors: Haiying
authors: H
authors: Wang
authors: Hairong
authors: H
authors: Xiong
authors: Zhenglong
authors: Z
authors: Hui
authors: Xiaobo
authors: X
authors: Zeng
mesh_terms: D000383:Agriculture; D000818:Animals; D001673:Biodegradation, Environmental; D002708:Chlorella / Q000145:classification / Q000378:metabolism*; D007220:Industrial Waste / Q000517:prevention & control*; D008055:Lipids / Q000096:biosynthesis*; D013552:Swine; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D007220:Industrial Waste; D008055:Lipids; D014874:Water Pollutants, Chemical