Abstract

An efficient natural bioextractant, orange peel extractant, was applied to recover uranium as one of hazardous elements. Batch experiments were carried out to determine the effect of various factors on the uranium extraction using a synthetic standard solution. These factors include the diluent type, pH, solvent concentration, contact time, and temperature. Under the optimum conditions (pH 4, A/O = 3/1), the maximum saturation capacity of the orange peel extractant for uranium reaches approximately 54.5 mg/g. The extracted uranium ions were almost completely eluted with NaCl/H₂SO₄ (1 M each). The procedure was applied to real sulfate leach liquor of a clay stone sample from Southeastern Sinai, Egypt.

中文翻译：

---

用天然橙皮萃取剂从硫酸浸出液中回收铀

摘要

一种高效的天然生物萃取剂——橙皮萃取剂，被用于回收作为危险元素之一的铀。使用合成标准溶液进行批量实验以确定各种因素对铀提取的影响。这些因素包括稀释剂类型、pH、溶剂浓度、接触时间和温度。在最佳条件下（pH 4，A/O = 3/1），橙皮萃取剂对铀的最大饱和容量达到约54.5 mg/g。提取的铀离子几乎完全被 NaCl/H ₂ SO ₄（各 1 M）洗脱。该程序应用于埃及西奈东南部粘土石样品的真正硫酸盐浸出液。