title: Immobilization of Chlorella sorokiniana GXNN 01 in alginate for removal of N and P from synthetic wastewater.
abstract: High costs and issues such as a high cell concentrations in effluents are encountered when utilizing microalgae for wastewater treatment. The present study analyzed nitrogen and phosphate removal under autotrophic, heterotrophic, mixotrophic and micro-aerobic conditions by Chlorella sorokiniana GXNN 01 immobilized in calcium alginate. The immobilized cells grew as well as free-living cells under micro-aerobic conditions and better than free-living cells under the other conditions. The immobilized cells had a higher ammonium removal rate (21.84%, 43.59% and 41.46%) than free living cells (14.35%, 38.57% and 40.59%) under autotrophic, heterotrophic, and micro-aerobic conditions, and higher phosphate removal rate (87.49%, 88.65% and 84.84%) than free living cells (20.21%, 42.27% and 53.52%) under heterotrophic, mixotrophic and micro-aerobic conditions, respectively. The data indicate that immobilized Chlorella sorokiniana GXNN 01 is a suitable species for use in wastewater treatment.
authors.affiliation: Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Hongjin
authors.initials: H
authors.lastname: Qiao
authors.forename: Apeng
authors.initials: A
authors.lastname: Lin
authors.forename: Guangce
authors.initials: G
authors.lastname: Wang
mesh_terms: D000464:Alginates / Q000737:chemistry*; D001422:Bacterial Adhesion / Q000502:physiology; D018914:Cells, Immobilized / Q000378:metabolism; D002708:Chlorella / Q000145:classification / Q000378:metabolism*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D007220:Industrial Waste / Q000517:prevention & control*; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism*; D010758:Phosphorus / Q000302:isolation & purification / Q000378:metabolism*; D013045:Species Specificity; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D020723:Glucuronic Acid; D009584:Nitrogen