title: [Lead adsorption by Trametes gallica, Bacillus cereus, and their co-immobilized biomaterial].
abstract: Taking Trametes gallica mycelium pellets, Bacillus cereus, and their co-immobilized biomaterial as bio-adsorbents, this paper studied their Pb2+ adsorption under effects of different contact time, medium initial pH value and Pb2+ concentration, and bio-adsorbent concentration, and compared the infrared spectra of the bio-adsorbents before and after Pb2+ absorption. The Pb2+ adsorption efficiency of the bio-adsorbents was the highest when the bio-adsorbent concentration was 2 g x L(-1), initial pH was 5.0, initial Pb2+ concentration was 50 mg x L(-1), and contact time was 1 h, with the Pb2+ biosorption rate being 71.7% for the mycelium pellets of T. gallica, 91.0% for B. cereus, and 96.9% for the co-immobilized biomaterial. The infrared spectra of the bio-adsorbents were mainly consisted of the absorption zones of protein, carbohydrates, and sulphur- and phosphors-based groups, suggesting that hydroxyl, carboxyl, and sulphur- and phosphate-based groups played important roles in the Pb2+ adsorption by the bio-adsorbents.
authors.affiliation: College of Life and Basic Sciences, Sichuan Agricultural University, Ya' an 625014, Sichuan, China. yzhouping@163.com
authors.forename: Zhou-Ping
authors.initials: ZP
authors.lastname: Yang
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.forename: Zhen-Yu
authors.initials: ZY
authors.lastname: Wang
authors.forename: Rong
authors.initials: R
authors.lastname: Hu
authors.forename: De-Jun
authors.initials: DJ
authors.lastname: Jing
authors.forename: Qian-Ming
authors.initials: QM
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D001409:Bacillus cereus / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018914:Cells, Immobilized / Q000378:metabolism; D007854:Lead / Q000302:isolation & purification* / Q000378:metabolism; D013055:Spectrophotometry, Infrared; D055454:Trametes / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D007854:Lead; D062065:Wastewater