title: Use of microorganisms immobilized on composite polyurethane foam to remove Cu(II) from aqueous solution.
abstract: Composite polyurethane (PU) foams were made via the polymerization of toluene diisocyanate (TDI) and polyether polyol with activated carbon fiber, and immobilized microorganisms on polyurethane (IPU) foam were prepared by cultivating the microbe B350 in a mixture of culture medium and PU. We used batch adsorption techniques to study the removal of Cu(II) ions from aqueous solutions via PU and IPU. Moreover, the effects of pH, temperature, carrier amount, and biosorption time on the removal rate of Cu(II), adsorption equilibrium, and adsorption kinetics were investigated in detail. The IPU showed an excellent removal rate for Cu(II). The adsorption kinetics data were in good agreement with the pseudo-second-order rate model, and the adsorption isotherms could be adequately described by the Langmuir equation. For synthetic wastewater containing Cu(II), the removal rates for Cu(II) and COD after 4h treatment were 85% and 80%, respectively.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, 222 Tianshui Road, Lanzhou, PR China.
authors.forename: Lin-Cheng
authors.initials: LC
authors.lastname: Zhou
authors.forename: Yan-Feng
authors.initials: YF
authors.lastname: Li
authors.forename: Xue
authors.initials: X
authors.lastname: Bai
authors.forename: Guang-Hui
authors.initials: GH
authors.lastname: Zhao
mesh_terms: D000327:Adsorption; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018914:Cells, Immobilized; D003300:Copper / Q000302:isolation & purification / Q000493:pharmacokinetics*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D011140:Polyurethanes; D012996:Solutions; D013696:Temperature
chemical_list: D011140:Polyurethanes; D012996:Solutions; D003300:Copper; C028279:polyurethane foam