title: Biosorption of lead(II) in aqueous solution by spent mushroom Tricholoma lobayense.
abstract: The biosorption of lead(II) ions in both simulated and real wastewater by spent mushroom Tricholoma lobayense, was studied in this work. The results show a biomass with a high potential for removing lead ions from wastewater. The optimum pH for the adsorption is 4, and the adsorption process is fast. The best sorbent mass of the biomaterial is 5 g/L with an initial lead(II) concentration of 1 mmol/L. The process follows the Langmuir isotherm model, and the biosorption capacity of lead ions reaches to 210 mg/g, which is higher than many biosorbents previously studied. The mechanism of biosorption may be mainly attributed to ion exchange. The FT-IR study identifies the functional groups responsible for this process. A scanning electron microscope showed a significant change of the sorbent surface after the biosorption process. The energy dispersive elemental analysis also confirmed the adsorption of lead(II) ions.
authors: Key Laboratory for Bio-resources and Eco-environment of Education Ministry, College of Life Science, Sichuan University, Chengdu 610064, China.
authors: Jiuzhou
authors: J
authors: Dai
authors: Feng
authors: F
authors: Cen
authors: Jinhu
authors: J
authors: Ji
authors: Weiwei
authors: W
authors: Zhang
authors: Heng
authors: H
authors: Xu
mesh_terms: D000327:Adsorption; D018533:Biomass; D002681:China; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000302:isolation & purification*; D016014:Linear Models; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013997:Time Factors; D055439:Tricholoma / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D014874:Water Pollutants, Chemical; D007854:Lead