Journal
BIORESOURCE TECHNOLOGY
Volume 179, Issue -, Pages 624-628Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.12.053
Keywords
Scenedesmus obliquus; Biomass; Food wastewater; Bioenergy; Autoflocculation
Funding
- Korea Institute of Science and Technology (Gangneung) [2Z04230]
- National Research Council of Science & Technology (NST), Republic of Korea [2Z04230] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Effect of food wastewater (FW) on the biomass, lipid and carbohydrate production by a green microalga Scenedesmus obliquus cultivated in Bold's Basal Medium (BBM) was investigated. Different dilution ratios (0.5-10%) of BBM either with FW or salt solution (NaCl) or sea water (SW) were evaluated. S. obliquus showed the highest growth (0.41 g L (1)), lipid productivity (13.3 mg L (1) day L (1)), carbohydrate productivity (14.7 mg L (1) day L (1)) and nutrient removal (38.9 mg TN L (1) and 12.1 mg TP L (1)) with 1% FW after 6 days of cultivation. The FW promoted algal autoflocculation due to formation of inorganic precipitates at an alkali pH. Fatty acid methyl ester analysis revealed that the palmitic and oleic acid contents were increased up to 8% with FW. Application of FW improved the growth, lipid/carbohydrate productivity and biomass recovery efficiency of S. obliquus, which can be exploited for cost effective production of microalgae biomass. (C) 2014 Elsevier Ltd. All rights reserved.
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