title: High performance and prospective application of xanthate-modified thiourea chitosan sponge-combined Pseudomonas putida and Talaromyces amestolkiae biomass for Pb(II) removal from wastewater.
abstract: Biosorption using microbes has been proved to be an efficient technology to remove heavy metals from wastewater, whereas the imperfections in mechanical property and separation limit their practical application. In this study, Pseudomonas putida I3 and Talaromyces amestolkiae Pb respectively combined with xanthate-modified thiourea chitosan sponge (PXTCS and TXTCS) were synthesized to investigate the Pb(II) removal ability from solutions. The prepared biosorbents possessed a three-dimensional macroporous structure convenient for separation. Experimental data indicated their biosorption behaviors well followed the pseudo-second-order kinetics and Langmuir isotherm model. The maximum biosorption capacities of PXTCS and TXTCS were 232.03 and 241.61mgg-1with 40% P. putida I3 and 15% T. amestolkiae Pb, respectively. For the effects of co-existing metal ions on Pb(II) biosorption, the promoting degree followed the sequence: Zn(II)>Na(I)≈K(I)>Ca(II)>Mg(II)≈Al(III)≫Cd(II)>Fe(III). Both prepared biosorbents were effective in removing heavy metals from simulated industrial effluents containing various trace-level heavy metals or high concentration Pb(II).
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Nana
authors.initials: N
authors.lastname: Wang
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China.
authors.forename: Xingjian
authors.initials: X
authors.lastname: Xu
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China.
authors.forename: Quanying
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Lizhu
authors.initials: L
authors.lastname: Yuan
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun 130102, China. Electronic address: yuhw@iga.ac.cn.
authors.forename: Hongwen
authors.initials: H
authors.lastname: Yu
mesh_terms: D000327:Adsorption; D018533:Biomass; D048271:Chitosan; D005290:Ferric Compounds; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead; D011446:Prospective Studies; D016958:Pseudomonas putida; D032901:Talaromyces; D013890:Thiourea; D062065:Wastewater
chemical_list: D048271:Chitosan; D005290:Ferric Compounds; D007854:Lead; D013890:Thiourea; D062065:Wastewater
keywords: Chitosan sponge; Interfering effect; Pb(II) biosorption; Pseudomonas putida; Talaromyces amestolkiae