title: Biosorption of Pb(II) by biomass of KC-2: kinetic, equilibrium and characteristic studies.
abstract: Performance and characteristics of biosorption of Pb(II) had been studied in a batch system using the fungal strain biomass, KC-2. The biosorption performance was investigated by analysing the effects of such factors as the initial pH, initial Pb(II) concentration, and contact time at 303 K. The maximum Pb(II) adsorption was obtained at pH 5.0. The experimental data were described by the pseudo first-order, pseudo second-order and intraparticle diffusion kinetic models, and were closely followed the pseudo second-order kinetic model. The equilibrium experimental data were well fitted to Langmuir model and the maximum biosorption capacity was 84.03 mg g(-1). The adsorption mechanism was examined by FTIR, SEM and EDAX analysis. Results indicated that carboxylic, hydroxyl and amine groups were involved in the biosorption and ion exchange mechanism existed.
authors.affiliation: School of Environment, Jiangsu University, Zhenjiang, Jiangsu, 212013, China. ouhongxiang@ujs.edu.cn
authors.forename: Hong-Xiang
authors.initials: HX
authors.lastname: Ou
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: Yong-Lai
authors.initials: YL
authors.lastname: Xue
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Pan
authors.forename: Dao-Lin
authors.initials: DL
authors.lastname: Du
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Yan
mesh_terms: D000327:Adsorption; D018533:Biomass; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead / Q000378:metabolism*; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D007854:Lead