椰壳活性炭对水溶液中铀(VI)的吸附研究  

Adsorption of Uranium(VI)in Aqueous Solution by Coconut Shell Activated Carbon

作　　者：吴素强 刘永 何鹏 Wu suqiang(School of Resource Environment and SafetyEngineering,University of South China,Hengyang 421001,China;Hunan Province Engineering Technology Research Center of Uranium Tailings Decommission Treatment,Hengyang 421001,China)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001 [2]湖南省铀尾矿库退役治理工程技术研究中心,湖南衡阳421001

出　　处：《安徽农学通报》2019年第7期126-129,共4页Anhui Agricultural Science Bulletin

基　　金：国家自然科学基金项目(51574152;11705085);环境保护部安全监察项目资金(1620;1721);湖南省自然科学基金资助项目(2017JJ4009;2017JJ2232;2017JJ3262);湖南省科技厅中央引导地方科技发展专项资金资助项目(2017CT5006);2018年湖南省研究生科研创新基金资助项目(2018KYY154)

摘　　要：以椰壳为原料制得活性炭C-1,采用KOH电镜、粉末衍射仪等仪器对C-1和C-2进行表征。结果表明,C-2含有较多的含氧官能团,会形成新的孔隙;以铀(VI)溶液为研究目标,C-1对铀的吸附量为3.01mg/g,C-2对铀的吸附容量为3.62mg/g,Lagergren准二级动力学方程和Langmuir吸附等温式能很好的描述C-1和C-2对铀(VI)的吸附。Activated carbon C-1 was prepared from coconut shell,and activated carbon C-2 was obtained by modification of C-1 by KOH activation method.The characterization methods adopted by C-1 and C-2 are mainly through infrared analyzer,scanning electron microscope,powder diffractometer and other instruments.The results show that C-2 contains more oxygen-containing functional groups and forms new pores.Taking uranium(VI)solution as the research target,the adsorption capacity of C-1 for uranium is 3.01mg/g,and the adsorption capacity of C-2 for uranium is 3.62mg/g.The Lagergren quasi-second-order kinetic equation and the Langmuir adsorption isotherm can better describe the adsorption of uranium(VI)by C-1 and C-2.

关 键 词：活性炭 铀 吸附动力学 吸附等温线 

分 类 号：X53[环境科学与工程—环境工程]