盐湖水铀新型复合吸附材料制备及吸附性能研究  

Extraction of uranium on botanic-organic composite in the salt lake water

作　　者：刘玲[1,2,3] 史亚芬 肖克萍 黄洁 薛金花 李乐[1,2,3] LIU Ling;SHI Ya-fen;XIAO Ke-ping;HUANG Jie;XUE Jin-hua;LI Le(Department of Public Health Laboratory Sciences,University of South China,Hengyang 421001,China;Key Laboratory of Health Hazard Factor Inspection and Quarantine,University of South China,Hengyang 421001,China;Hunan Provincial Key Laboratory for Typical Environment Pollution and Health Hazard,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学公共卫生学院,湖南衡阳421001 [2]南华大学衡阳市健康危害因子检验检疫新技术研究重点实验室,湖南衡阳421001 [3]南华大学湖南省典型环境污染与健康危害重点实验室,湖南衡阳421001

出　　处：《应用化工》2021年第7期1843-1846,1849,共5页Applied Chemical Industry

基　　金：湖南省重点研发计划(2018SK2029);湖南省省级立项大学生研究性学习和创新性实验计划项目(356);湖南省教育厅科学研究项目(1818C0423);2020年湖南省研究生创新课题(CX20200913)。

摘　　要：制备一种新型植物有机复合铀吸附剂。用磷酸三丁酯对樟树叶进行改性,得到一种能有效吸附铀的植物有机吸附剂,通过ICP-MS对铀吸附和解吸实验后溶液进行检测得出吸附效率。结果表明,吸附剂用量为0.02 g,溶液pH 8.5,吸附时间为1 h,初始浓度为200μg/L纯溶液的吸附效率可达98.05%。在实验条件不变的条件下,在模拟盐湖水溶液中,吸附时间为12 h,再用0.25 mol/L HNO 3解吸12 h,用ICP-MS检测吸附后及解吸后溶液的浓度,当溶液矿化度分别为400,200,100 g/L时,铀的提取率分别为74.25%,82.68%,93.53%。该吸附材料制备简单,成本低廉,在碱性、共存离子等复杂条件下可以有效提取盐湖水中铀,为铀提取提供了一种新方法。To preparate a new plant organic composite uranium adsorbent.The camphor leaves were modified with tributyl phosphate to obtain a plant organic adsorbent that can effectively adsorb uranium.The adsorption efficiency of the solution after the uranium adsorption and desorption experiment was detected by ICP-MS.Results shows that when the amount of adsorbent is 0.02 g,the pH of the solution is 8.5,the sorption time is 1 h,and the initial concentration is 200μg/L,the adsorption efficiency of pure solution can reach 98.05%.Under the fixed experimental conditions,in the simulated salt lake aqueous solution,the modified camphor leaves were used to adsorb the simulated salt lake aqueous solution for 12 h,and then desorbed with 0.25 mol/L HNO 3 for 12 h.The concentration of the solution after adsorption and desorption is detected by ICP-MS.The result showed that when the salinity of the solution are 400,200,100 g/L,the extraction rates of uranium are 74.25%,82.68%,and 93.53%.The adsorption material has simple preparation and low cost,and can effectively extract uranium in salt lake water under complex conditions such as alkaline and coexisting ions,and provides a new method for uranium extraction.

关 键 词：樟树叶 植物有机复合吸附剂 盐湖水 铀 

分 类 号：TQ028.5[化学工程]