通过室内等温静态批量平衡吸附实验,采用2种常见的等温吸附方程(Freundlich方程、Langmuir方程)对锶在3种不同润湿性的石英砂中的吸附行为进行了回归拟合。结果表明,介质润湿性对锶的吸附会产生重要的影响,润湿性较强的亲水性石英砂的吸附性能明显优于疏水性石英砂;从Freundlich方程和Langmuir方程拟合结果来看,两者均具有理想的相关性,但普通石英砂和亲水性石英砂的等温吸附式更符合Langmuir方程,而疏水性石英砂采用Freundlich方程拟合的相关性更好。
Batch isothermal adsorption experiments were conducted in the laboratory to investigate the adsorp-tion behavior of strontium on 3 quartz sands with different wettability. The adsorption data were evaluated by Freundl-ich model and Langmuir model respectively. Results showed that the wettability of quartz sand had great effect on strontium adsorption. Quartz sand with strong wettability was superior to that with poor wettability on strontium ad-sorption. Both the Freundlich and Langmuir model fitted the adsorption data very well, while Langmuir model provided better correlation for ordinary quartz sand and hydrophilic ones, and Freundlich model was more accurate when descri-bing the adsorption behavior of strontium on hydrophobic quartz sand.