中南大学学报（自然科学版）2016，Vol.47Issue(6)：1867-1871,5.DOI:10.11817/j.issn.1672-7207.2016.06.007
弱碱性阴离子交换树脂对酸性含铀浸出液中铀的吸附机理
Adsorption mechanism of weakly basic anion exchange resin for uranium in acidic leaching solution containing uranium
摘要
Abstract
The adsorption mechanism of the weakly basic anion exchange D301 resin treating with the acidic leaching solution contained uranium was studied. The cause for unusual desorption phenomenon of D301 uranium bearing resin was analyzed. The desorption parameters of D301 uranium bearing resin were optimized. The results show that the content of complexes UO22+, UO2SO4, UO2(SO4)22− and UO2(SO4)34− are different in an in-situ acid leaching solution. And the adsorption mechanism of D301 resin for UO2(SO4)22−, UO2(SO4)34−is ion exchange mechanism, while that for UO2(SO4)22−and UO2(SO4)34−is ion exchange surface complex formation mechanism. Double peaks on the eluting curve are caused by two different chemical bonds which combine the uranous complex with the resin. For the desorption solvent, the eluting curve can be optimized by increasing the mass concentration of sulfuric acid to 30 g/L or using a NaCl solution of 90 g/L, and the latter one has more practicality value.关键词
弱碱性阴离子交换树脂/D301树脂/吸附机理/络合Key words
weakly basic anion exchange resin/D301 resin/adsorption mechanism/complex分类
矿业与冶金引用本文复制引用
闻振乾,姚益轩,牛玉清,周根茂,胥国龙,钟宏..弱碱性阴离子交换树脂对酸性含铀浸出液中铀的吸附机理[J].中南大学学报（自然科学版）,2016,47(6):1867-1871,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA061802)(Project(2012AA061802) supported by the National High Technology Research and Development Program (863 Program) of China) （863计划）
