摘要
采用丙烯酸甲酯、乙二胺对碱化木屑进行接枝反应,然后用二硫化碳黄化,合成了具有酰胺基和氨基的木屑黄原酸盐;并研究了其对重金属离子Cu2+、Ni2+和Cd2+的吸附行为。结果表明,螯合木屑黄原酸盐对Cu2+、Ni2+和Cd2+的平衡吸附量次序为:Cd2+>Cu2+>Ni2+,其值分别是32.873 mg/g、17.328 mg/g和32.982 mg/g。等温吸附过程符合Langmuir方程,说明吸附可能属于单分子层吸附;动力学吸附过程符合准二级动力学模型,吸附过程可能属于化学吸附反应。
The containing acylamino and amino chelating sawdust xanthate synthesized by the grafting reaction of sawdust,methyl acrylate,epichlorohydrin and carbon disulfide was used to investigate the adsorptions of Cu2+,Ni2+ and Cd2+ ions.The results showed that the order of the equilibrium adsorption capacity for three metal ions was as follows: Cd2+ Cu2+ Ni2+,the value was calculated to be 32.873 mg/g,17.328 mg/g and 32.982 mg/g respectively.The Langmuir isotherm model could explain the isotherm data,and indicated the process was possible monolayer adsorption.The pseudo second-order rate equation could explain the kinetic experimental data,this suggested the adsorption process is possible chemical adsorption reaction.
出处
《科学技术与工程》
北大核心
2013年第18期5255-5259,共5页
Science Technology and Engineering
基金
国家自然科学基金项目(41061044)
广西自然科学基金重点项目(2010GXNSFD013016)
广西自然科学基金面上项目(2012GXNSFAA053017)资助