4A zeolite-base magnetic adsorbent was prepared using solid waste resource of kaolinite type pyrite cinder, the prepared adsorbent can be recovered by magnetic separation processing. Effect of adsorbent dosage, background electrolyte concentration, and pH value on the adsorption to Sr2+ and Cs+ were examined by adsorption experiments. And the characterization of adsorption kinetics and adsorption isotherm were also analyzed. The results show that the adsorbent dosage were related to ion valence and atomic weight. In addition, the competitive adsorption existed between Na+and Sr2+ and Cs+, and the solution pH value has a significant impact on the adsorption. All adsorption of Sr2+ and Cs+ to magnetic adsorbents can be described by a pseudo-second order equation. The saturation adsorption amount of Sr2+ is lower than Cs+, but the adsorption rate is higher than Cs+. The magnetic adsorbent to Sr2+ is monolayer adsorption, and for Cs+ is multilayer adsorption.%以高岭石型硫铁矿烧渣为主要原料,制备可快速磁分离回收的4A沸石基磁性吸附剂,结合静态吸附试验研究吸附剂用量、背景电解质浓度、溶液pH值对Sr2+、Cs+吸附效果的影响,以及吸附剂对Sr2+、Cs+的吸附动/热力学特征.结果表明,吸附剂用量对吸附效果的影响与Sr2+、Cs+的电价及原子量相关,背景电解质中Na+存在竞争吸附,pH值也显著影响吸附效果.吸附剂对Sr2+、Cs+的吸附符合准二级吸附动力学方程,对Sr2+的饱和吸附量低于Cs+,但吸附速率却高于Cs+.磁性吸附剂对Sr2+的吸附为单层吸附,对Cs+则为多层吸附.
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