文献类型：期刊文献

英文题名：Amidoxime functionalized hydroxyapatite composites separate the uranium(VI) from aqueous solution

作者：Duan, Guojian[1];Tian, Huining[1];Chen, Hui[1];Wu, Rong[1];Xu, Zhen[2,3];Liu, Tonghuan[2,3];Peng, Xiaoxia[1]

第一作者：段国建

通信作者：Duan, GJ[1]

机构：[1]Gansu Univ Chinese Med, Coll Pharm, Lanzhou 730000, Peoples R China;[2]Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China;[3]Lanzhou Univ, Sch Nucl Sci & Technol, Key Lab Special Funct Mat & Struct Design Dinistr, Lanzhou 730000, Peoples R China

第一机构：甘肃中医药大学药学院（西北中藏药协同创新中心办公室）

通信机构：[1]corresponding author), Gansu Univ Chinese Med, Coll Pharm, Lanzhou 730000, Peoples R China.|[1073501e14fb35863569f]甘肃中医药大学药学院（西北中藏药协同创新中心办公室）;[10735]甘肃中医药大学;

年份：2021

卷号：225

起止页码：311

外文期刊名：DESALINATION AND WATER TREATMENT

收录：;Scopus(收录号：2-s2.0-85110736441);WOS:【SCI-EXPANDED(收录号:WOS:000672133600029)】；

基金：This research was funded by National Natural Science Foundation of China (No. 21762001); Key Scientific Research Projects of Gansu Institute of Traditional Chinese Medicine (No. 2305137401).

语种：英文

外文关键词：Adsorption; Amidoxime; Hydroxyapatite; Functionalized; U(VI)

摘要：Amidoxime functionalized hydroxyapatite (HAP) composites were prepared and characterized by means of Fourier-transform infrared spectroscopy, scanning electron microscopy and X-ray powder diffraction. The adsorption characteristics of the adsorbent on uranyl ions were studied, and the effects of solid-liquid ratio, pH value, ionic strength, temperature, equilibrium time and other factors on the adsorption process were investigated. Under the optimum conditions, the adsorption capacity of the modified HAP material can reach 889.7 mg/g. The adsorption thermodynamics and kinetics data show that the adsorption of U(VI) by amidoxime (AO) functionalized hydroxyapatite is a spontaneous exothermic process, and the adsorption equilibrium can be reached within 30 min, which is in line with the Langmuir isothermal adsorption model. AO-co-HAP has a very good selectivity for U(VI). The desorption rate of U(VI) can reach 97.88% in 0.15 M acid solution. Compared with the traditional separation method, this adsorbent has a wider range of raw materials and a lower cost of waste liquid treatment, so it has an excellent practical application value.