期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：2
页码：350-359
出版社：University of Mohammed Premier Oujda
摘要：Natural minerals are used to remove Arsenic (As) from aq ueous solution in this study. The influence of suspension pH, temperature, agitation speed and arsenic dosage on arsenic removal is investigated in a series of batch adsorption experiments. In addition, emp irical relationships are developed between % As (V) remo val and adsorbent, adsorbate dose. Thermod ynamic parameters are evaluated from temperature experiments. The kinetic is found to be pseudo second order in nature. The negative value of free energy change indicates the spontaneity of adsorption process. The adsorption of As (V) on natural minerals is found to be pore diffusion controlled in addition to surface adsorption
关键词：Adsorption; Arsenic; Bauxite; Iron ore; Manganese ore; Nickel laterite
