Adsorption of Cr(Ⅵ)from aqueous single metal solutions by succinylated cellulose modified with Polyethylenimine(PEI)
This study describes the preparation of a new chelating material.Cellulose was rapidly pretreated with microwave-H2O2and grafted with metal binding groups.New biosorbent were characterized by concentration of functional groups,elemental analysis,and infrared spectroscopy.The results showed degrees of carboxyl of 4.64 mmol/g,amination of 2.61mmol/g and nitrogen content of 4.64%,respectively.The effect of contact time,pH,and initial concentration on the metal ions uptake was investigated.The results indicate that the pseudo-second-order kinetic equation was adequate to describe the adsorption kinetics(R2> 0.999).Adsorption isotherms were well fitted by Freundlich isotherm model with remarkably high adsorption capacity(97.06mg/g for Cr(Ⅵ)).Overall,rapid and environmental preparation and efficient adsorption would make it a promising biosorbent.
Jingjing Su Hongxiang Zhu Jianhua Xiong Xinliang Liu Dongxue Li Yangmei Chen Cunzhi Zhang
Department of light Industrial and Food Engineering,Guangxi University,Nanning,53004,China;Guangxi K School of Environment,Guangxi University,Nanning 530004,China;Department of Paper and Bioprocess Eng
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）