期刊名称：International Research Journal of Environmental Sciences
电子版ISSN：2319-1414
出版年度：2012
卷号：1
期号：1
页码：34-41
语种：English
出版社：International Science Community Association
摘要：The feasibility of using Amberlite IRC-86, a weak acid cation- exchange resin as an adsorbent for mercury (II) ions removal was examined. The influences of experimental parameters such as pH, initial mercury concentration, and agitation time and resin dosage were investigated. The data were analyzed on the basis of Lagergren pseudo-first order, Ho pseudo-second order, Langmuir, Freundlich and Redlich- Peterson isotherm models. The ion -exchange process, which is pH dependant, indicated that maximum removal of mercury (II) was obtained at pH 7±0.1 and a resin dosage of 0.1g. Through fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and scanning electron microscopy coupled energy dispersive X-ray (SEM-EDAX) analysis, the ion -exchange mechanism was confirmed. Finally, the resin can be regenerated by treatment of the spent resin with HCl. The experimental results indicate that Amberlite IRC-86, weak acid cation exchange resin is a promising adsorbent, which could be used effectively for the removal of mercury (II) ions from aqueous medium.
