Department of Chemical Sciences, College of Natural Sciences, Redeemer's University, Redemption City, Ogun State, Nigeria.
J Hazard Mater. 2009 Nov 15;171(1-3):215-21. doi: 10.1016/j.jhazmat.2009.05.126. Epub 2009 Jun 6.
Kaolinite clay obtained from Ubulu-Ukwu, Delta State in Nigeria was modified with polyvinyl-alcohol (PVA) reagent to obtained PVA-modified Kaolinite clay. Kinetic and equilibrium data were obtained for the batch adsorption of Pb(2+) onto PVA-modified Kaolinite clay. Time-dependent Langmuir and pseudo-second order kinetic models (TDLM and PSOM) were developed to predict the optimized minimum operating time for the adsorption of Pb(2+) onto PVA-modified Kaolinite clay in a two-stage batch adsorber system. Results obtained suggest that the two-stage batch adsorber process leads to improved contact time and increased percentage Pb(2+) removal. Data from both models (TDLM and PSOM) were compared using t-test and F-test and were found to be precise enough for use in the optimization of kinetic data for a two-stage adsorption of Pb(2+) ions from aqueous solution.
从尼日利亚三角洲州 Ubulu-Ukwu 获得的高岭土粘土用聚乙烯醇 (PVA) 试剂进行改性，得到 PVA 改性高岭土粘土。通过间歇吸附实验获得了 Pb(2+) 对 PVA 改性高岭土粘土的吸附动力学和平衡数据。建立了时间相关的 Langmuir 和伪二阶动力学模型（TDLM 和 PSOM），以预测在两段间歇吸附器系统中 Pb(2+) 吸附到 PVA 改性高岭土粘土上的最佳最小操作时间。结果表明，两段间歇吸附器工艺可延长接触时间，提高 Pb(2+)去除率。使用 t 检验和 F 检验对两个模型（TDLM 和 PSOM）的数据进行比较，结果表明这些数据足够精确，可用于优化从水溶液中两级吸附 Pb(2+)离子的动力学数据。
