Scenedesmus quadricauda for Nutrient Removal and Lipid Production in Wastewater. (1st December 2015)

• Record Type: Journal Article
• Authors: Wong, Y.K.; Yung, K.K.L.; Tsang, Y.F.; Xia, Y.; Wang, L.; Ho, K.C.
• Is Part Of: Water environment research. Volume 87:Number 12(2015)
• Page Start: 2037
• Page End: 2044
• Publication Date: 2015-12-01
• Subjects: Scenedesmus quadricauda -- wastewater treatment -- nutrient removal -- lipid production; Water quality management -- Periodicals; Water -- Purification -- Periodicals; Water -- Pollution -- Periodicals; Water -- Pollution; Water -- Purification; Water quality management; Sewage; Water Pollution; Periodicals; Electronic journals; Periodicals; 628.16
• DOI: 10.2175/106143015X14362865227193
• Languages: English
• ISSNs: 1061-4303

Abstract

ABSTRACT: : Scenedesmus quadricauda, a local freshwater microalga, was used to treat primary settled and filtrate wastewater and to produce algal lipid. For the primary settled wastewater, the maximum biomass concentrations of acclimated and unacclimated microalgae were 0.995 g/L and 0.940 g/L, respectively. Over 90% orthophosphate and 95% ammonia nitrogen in the acclimated and unacclimated cultures, respectively, were removed after five days. The lipid contents of the microalgae were higher than 13% in all cultures. The highest growth rate occurred in the 25% filtrate culture. Over 80% phosphate was removed under the 25% and 50% filtrate cultures within six days, while over 90% ammonia nitrogen was removed within five days under both conditions. The lipid content was the highest (18.1%) under the 50% filtrate condition. C16:0, C18:2n6, and C18:3n3 were dominant fatty acids. In conclusion, S. quadricauda is a viable candidate for wastewater treatment and lipid production.