Abstract

Zeolite modified with phosphate (Z/P) was synthesized and tested for Th⁴⁺ adsorption. The optimum adsorption conditions are as follows: pH 3.5, contact time of 30 min, 0.1 g of Z/P, initial Th⁴⁺ concentration of 400 mg/L, 20% tributyl phosphate (TBP) in toluene as solvent, and room temperature. Kinetics and equilibrium parameters of the Th⁴⁺ adsorption onto Z/P were determined. The maximum sorption capacity determined using the Langmuir model reached 92.59 mg/g. The Th⁴⁺ adsorption onto Z/P follows a pseudo-second-order kinetic model. Th⁴⁺ can be efficiently desorbed from the loaded Z/P with 1 M HNO₃ solution. The optimized conditions were applied to the thorium adsorption from a conglomerate sandstone sample of Abu El Toyour, eastern side of Wadi El Sahu, Southwestern Sinai, Egypt.

中文翻译：

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硫酸盐溶液中合成的沸石-磷酸盐复合物分离of离子

摘要

合成了用磷酸盐（Z / P）改性的沸石，并测试了其对Th ^4+的吸附。最佳吸附条件如下：pH 3.5，接触时间30分钟，Z / P 0.1 g，初始Th ⁴⁺浓度为400 mg / L，在甲苯中的20％磷酸三丁酯（TBP）作为溶剂和室温。确定了在Z / P上吸附Th ^4+的动力学和平衡参数。使用Langmuir模型确定的最大吸附容量达到92.59 mg / g。Z / P上的Th ⁴⁺吸附遵循伪二级动力学模型。用1 M HNO ₃可以有效地从负载的Z / P中解吸Th ⁴⁺解。将优化的条件应用于埃及西奈西南部Wadi El Sahu东部Abu El Toyour的砾岩砂岩样品中的or吸附。