Department of Chemical Engineering, National Institute of Technology Karnataka, Suratkal, 575205, India.
Environ Sci Pollut Res Int. 2014 May;21(10):6603-11. doi: 10.1007/s11356-014-2566-8. Epub 2014 Feb 6.
Molecularly imprinted polymer adsorbent has been prepared to remove a group of recalcitrant and acutely hazardous (p-type) chemicals from water and wastewaters. The polymer adsorbent exhibited twofold higher adsorption capacity than the commercially used polystyrene divinylbenzene resin (XAD) and powdered activated carbon adsorbents. Higher adsorption capacity of the polymer adsorbent was explained on the basis of high specific surface area formed during molecular imprinting process. Freundlich isotherms drawn showed that the adsorption of p-type chemicals onto polymer adsorbent was kinetically faster than the other reference adsorbents. Matrix effect on adsorption of p-type chemicals was minimal, and also polymer adsorbent was amenable to regeneration by washing with water/methanol (3:1, v/v) solution. The polymer adsorbent was unaltered in its adsorption capacity up to 10 cycles of adsorption and desorption, which will be more desirable in cost reduction of treatment compared with single-time-use activated carbon.
已制备出分子印迹聚合物吸附剂，用于从水中和废水中去除一组难处理和急性危害（p 型）化学物质。与商业上使用的聚苯乙烯二乙烯基苯树脂（XAD）和粉末状活性炭吸附剂相比，该聚合物吸附剂的吸附容量提高了一倍。聚合物吸附剂的高吸附容量是基于分子印迹过程中形成的高比表面积来解释的。绘制的弗伦德利希等温线表明，p 型化学物质在聚合物吸附剂上的吸附动力学比其他参考吸附剂更快。p 型化学物质在吸附过程中的基质效应最小，而且聚合物吸附剂也可以通过水洗/甲醇（3:1，v/v）溶液进行再生。该聚合物吸附剂在 10 次吸附和解吸循环中其吸附能力没有变化，与一次性使用的活性炭相比，这将更有利于降低处理成本。
