影像科学与光化学2017，Vol.35Issue(3)：274-280,7.DOI:10.7517/j.issn.1674-0475.2017.03.274
改性纤维素的制备及分光光度法对Cu2+吸附研究
Novel Amino Acid Modified Cellulose for Copper(Ⅱ) Adsorption via Spectrophotometry
摘要
Abstract
Copper is a highly toxic environmental pollutant,therefore,there is an urgent need to develop new materials for its removal from water.In the present study,new TEMPO oxidized cellulose-based materials were synthesized and investigated as an adsorbent for simple and rapid removal of copper ion [Cu (Ⅱ)] via spectrophotometry.Cellulose was extracted from chemical pulp fiber,TEMPO oxidized,and modified by reaction with three different amino acids (Gly,Lys,His).Compared with TEMPO oxidizedcellulose (TOC),the amino acid modified cellulose (AMC) had better effect on the adsorption of copper ion,in which histidine modified cellulose achieved the best adsorption rate with 97 ％ in low copper concentration.In addition,the AMC dosing amount,initial copper concentration,pH on the adsorption effect were also investigated.The data were analyzed on the basis of variouskinetic and isotherm models,and pseudo-second-order kinetics and Langmuir isotherm were followed for Cu2+ adsorption.关键词
分光光度法/纤维素/氨基酸/二价铜离子/吸附Key words
spectrophotometry/cellulose/amino acid/copper(Ⅱ) ion/adsorption引用本文复制引用
刘志江,李檬,肖惠宁,黄志红..改性纤维素的制备及分光光度法对Cu2+吸附研究[J].影像科学与光化学,2017,35(3):274-280,7.基金项目
国家自然科学基金项目(21607044)、河北省自然科学基金项目(B2017502069)和中央高校基本科研业务费专项资金资助项目(2016MS108) （21607044）
