title: Biosorption of copper by cyanobacterial bloom-derived biomass harvested from the eutrophic Lake Dianchi in China.
abstract: Biomass of cyanobacterial bloom from Lake Dianchi was used as a biosorbent for copper removal from aqueous solution. The maximum capacity was found at conditions of pH 4, initial concentration of copper was 10 mg/l and initial dose of biomass was 1.0 g/l. HNO(3) demonstrated the highest desorption efficiency compared with HCl, EDTA, and citric acid. Physical adsorption was assumed not to be the dominant mechanism of biosorption as revealed by scanning electron microscopy and surface area measurement of the biomass. Infrared ray spectra analysis of the biomass suggested that ion-exchange is the principal mechanism for biosorption. Considering the advantages-low cost, easy to collect, and huge in quantity-the Microcystis bloom biomass could be used as a sorbent for copper and other heavy metals removal.
authors.affiliation: Institute of Hydrobiology, The Chinese Academy of Sciences, 7 South Donghu Road, 430072 Wuhan, Wuchang District, Hubei Province, People's Republic of China.
authors.forename: Kan
authors.initials: K
authors.lastname: Wang
authors.forename: Giovanni
authors.initials: G
authors.lastname: Colica
authors.forename: Roberto
authors.initials: R
authors.lastname: De Philippis
authors.forename: Yongding
authors.initials: Y
authors.lastname: Liu
authors.forename: Dunhai
authors.initials: D
authors.lastname: Li
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D018533:Biomass; D002681:China; D002851:Chromatography, High Pressure Liquid; D003300:Copper / Q000378:metabolism*; D000458:Cyanobacteria / Q000378:metabolism*; D005068:Eutrophication; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000378:metabolism; D046931:Microcystis / Q000378:metabolism*; D008855:Microscopy, Electron, Scanning; D010839:Phytoplankton / Q000382:microbiology; D013055:Spectrophotometry, Infrared; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D014867:Water; D003300:Copper