Institute of Chemistry, Environmental Protection and Biotechnology, Jan Dlugosz University of Czestochowa, Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
Waste Manag. 2013 Oct;33(10):2129-36. doi: 10.1016/j.wasman.2012.12.015. Epub 2013 Jan 10.
In this study, performance of a lab-scale two-step treatment system was evaluated for removal of toxic metal ions from landfill leachate. The technology of polymer inclusion membranes (PIMs) was the first step, while the second step of the treatment system was based on sorption on impregnated resin. The PIMs were synthesized from cellulose triacetate as a support, macrocyclic compound i.e. alkyl derivative of resorcinarene as a ionic carrier and o-nitrophenyl pentyl ether as a plasticizer. The transport experiments through PIM were carried out in a permeation cell, in which the membrane film was tightly clamped between two cell compartments. The sorption tests were carried out using a column filled with a resin impregnated with resorcinarene derivative. The obtained results show the good performance with respect to the removal of heavy metals from landfill leachate with the overall removal efficiency of 99%, 88% and 55% for Pb(II), Cd(II) and Zn(II) ions, respectively. Moreover the contents of metal ions in the leachate sample after treatment system were below permissible limit for wastewater according to the Polish Standards.
在这项研究中，评估了实验室规模的两步处理系统从垃圾渗滤液中去除有毒金属离子的性能。该技术的第一步是聚合物包容膜（PIMs），而处理系统的第二步是基于浸渍树脂的吸附。PIMs 是由三醋酸纤维素作为支撑体、大环化合物（即间苯二酚的烷基衍生物）作为离子载体和邻硝基苯戊基醚作为增塑剂合成的。通过在渗透池中进行 PIM 的传输实验，在该渗透池中，膜片被紧紧地夹在两个池室之间。使用填充有间苯二酚衍生物浸渍树脂的柱子进行吸附试验。获得的结果表明，该处理系统对从垃圾渗滤液中去除重金属具有良好的性能，Pb(II)、Cd(II)和 Zn(II)离子的总去除效率分别为 99%、88%和 55%。此外，处理系统后渗滤液样品中的金属离子含量低于波兰标准规定的废水允许限值。
