Microalgae cultivation using nutrients in fish farm effluent for biodiesel production

作     者：Enwereuzoh, Uzochukwu Harding, Kevin Low, Michelle 

作者机构：Industrial and Mining Water Research Unit (IMWaRU) School of Chemical and Metallurgical Engineering University of the Witwatersrand Johannesburg South Africa Centre in Water Research and Development (CiWaRD) University of the Witwatersrand Johannesburg South Africa Department of Environmental Management Federal University of Technology Owerri P.M.B. 1526 Owerri Nigeria 

出 版 物：《South African Journal of Chemical Engineering》 (S. Afr. J. Chem. Eng.)

年 卷 期：2021年第37卷

页      面：46-52页

学科分类：0402[教育学-心理学(可授教育学、理学学位）] 0821[工学-纺织科学与工程] 0401[教育学-教育学] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Biomass yield Carbohydrate content Carbon content CO₂ removal Lipid content 

摘      要：This article contributes to research on the composition of microalgae grown in fish farm wastewater (FFW), particularly for use in biodiesel production. In this research, Tetradesmus obliquus, Heterochlorella luteoviridis, and Chlamydomonas reinhardtii, cultivated in unmodified-and modified FFW, and the standard growth media, Tris-Acetate-Phosphate (TAP), were studied. The following parameters of the algae species were investigated: specific growth rate, biomass yield, biomass productivity, lipid content and carbohydrate content. Additionally, lipids and carbohydrate productivities were calculated, and the rate of CO2 uptake was determined. This study showed that the nutrients in FFW were suitable for algae biomass cultivation for biodiesel production. Chlamydomonas reinhardtii, in unmodified FFW, had the highest lipid and carbohydrate composition of 44.08% and 35.04%, respectively, and was most suited for biodiesel production as well as nutrient removal. The modified FFW only had the extra benefit of near-complete nutrient removal, but a comparable yield and biochemical composition with samples in unmodified FFW. A similar effect of CO2 concentration was observed in both the unmodified and modified FFW. © 2021