Zhou Lin-Cheng, Li Yan-Feng, Bai Xue, Zhao Guang-Hui
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.
J Hazard Mater. 2009 Aug 15;167(1-3):1106-13. doi: 10.1016/j.jhazmat.2009.01.118. Epub 2009 Feb 6.
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.
通过甲苯二异氰酸酯（TDI）与聚醚多元醇和活性炭纤维聚合制备复合聚氨酯（PU）泡沫，并通过在培养基和PU的混合物中培养微生物B350来制备固定在聚氨酯（IPU）泡沫上的微生物。我们采用分批吸附技术研究了PU和IPU对水溶液中Cu（II）离子的去除情况。此外，详细研究了pH值、温度、载体用量和生物吸附时间对Cu（II）去除率、吸附平衡和吸附动力学的影响。IPU对Cu（II）表现出优异的去除率。吸附动力学数据与伪二级速率模型吻合良好，吸附等温线可用Langmuir方程充分描述。对于含Cu（II）的合成废水，处理4小时后Cu（II）和COD的去除率分别为85%和80%。
