摘要
废弃贝壳采用不同的改性方法,制备了具有良好铀吸附性能的贝壳基吸附剂CMS、HAS和OS,使用红外光谱(FTIR)、扫描电镜(SEM)、X射线光电子能谱(XPS)、X射线衍射(XRD)和比表面分析(BET)对吸附剂的结构和组成进行表征。铀吸附实验结果表明,初始铀浓度为10 mg/L时,吸附剂用量为0.067 g/L,溶液pH为4,吸附时间为60 min,CMS对铀的吸附效率远高于HAS和OS,可达97.2%。
Based on the waste shells,shell based adsorbents(CMS,HAS and OS)with good uranium adsorption performance were prepared by different modification methods.The structure and composition of these adsorbent were characterized by infrared spectroscopy(FTIR),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD)and specific surface analysis(BET).The results show that the adsorption efficiency of CMS can reach 97.2%when the dosage of adsorbent is 0.067 g/L,the pH of solution is 4,the adsorption time is 60 min,and the initial uranium concentration is 10 mg/L.
作者
陈拓
彭捍
肖海鹏
雷海鹄
朱冰玉
唐紫薇
戴仲然
李乐
CHEN Tuo;PENG Han;XIAO Hai-peng;LEI Hai-hu;ZHU Bing-yu;TANG Zi-wei;DAI Zhong-ran;LI Le(College of Public Health,University of South China,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy,University of South China,Hengyang 421001,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第12期3481-3485,3491,共6页
Applied Chemical Industry
基金
国家自然科学基金面上项目(12175103)
湖南省教育厅科学研究重点项目(21A0259)
2021年度湖南省大学生创新创业训练计划项目(S202110555268)。
关键词
铀
贝壳
吸附
铀废水
uranium
shell
adsorption
wastewater