Badr Magd M, Youssef W M, Elgammal Entesar M, Hussien A E M, Taha M H
Polymer Laboratory, Petrochemical Department, Egyptian Petroleum Research Institute Nasr City Cairo 11727 Egypt
Nuclear Materials Authority P.O. Box 530 Maadi Cairo Egypt
RSC Adv. 2024 Oct 29;14(47):34526-34536. doi: 10.1039/d4ra04688a.
Epoxy-modified phosphorus pentasulfide (EPMPS) formulation was developed for the supported recovery of uranium from aquatic environments. The selected components of the prepared formulation were tailored to produce a rigid foamed polymeric material that was rich in phosphorus, nitrogen, sulfur and oxygen atoms, thus increasing chelating bonding possibilities with uranium. FT-IR and SEM were applied to physically characterize the resulting sorbent. At an equilibrium time of 30 min, the phase ratio S/L of 1 g L, pH 3 and initial uranium concentration of 50 mg L yielded an adsorption efficiency for uranium of 90%. An 85% elution of uranium from loaded EPMPS was achieved with 1 h shaking and a phase ratio (S/A) of 0.5 g/25 mL of 0.1 M CHCOONa. Sorption isotherm designs were exploited to analyze the findings from the experiments. Uranium had an adsorption capability of about 78.7 mg g. According to the results of uranium adsorption, when applied to an actual sample, EPMPS is a suitable substrate for uranium adsorption from nitrate media.
开发了环氧改性五硫化二磷（EPMPS）配方用于从水环境中负载回收铀。所制备配方中选定的成分经过调整，以生产一种富含磷、氮、硫和氧原子的刚性泡沫聚合材料，从而增加与铀的螯合键合可能性。应用傅里叶变换红外光谱（FT-IR）和扫描电子显微镜（SEM）对所得吸附剂进行物理表征。在平衡时间为30分钟、相比S/L为1 g/L、pH值为3且初始铀浓度为50 mg/L的条件下，铀的吸附效率为90%。通过1小时振荡以及相比（S/A）为0.5 g/25 mL的0.1 M CHCOONa，从负载的EPMPS中实现了85%的铀洗脱。利用吸附等温线设计来分析实验结果。铀的吸附容量约为78.7 mg/g。根据铀吸附结果，当应用于实际样品时，EPMPS是从硝酸盐介质中吸附铀的合适基质。
