中南民族大学学报：自然科学版2011，Vol.30Issue(3)：20-24,5.
乙二胺改性花生壳粉吸附阴离子染料的研究
Preparation of Ethylenediamine Modified Peanut Shell and Its Adsorption Behavior for Anionic Dyes
摘要
Abstract
A new adsorbent was synthesized from peanut shell,a natural product,using epoxy chloropropane and ethanediamine as cross-linking and modification agents.Factors affecting the adsorption behavior of this adsorbent for direct blue（DB） and sunset yellow（SY）,such as pH,initial dye concentration and adsorption time,were investigated.It was determined that the maximal adsorption capacities of this adsorbent for DB and SY were 129.1 mg·g-1 and 135.2 mg·g-1 respectively at 25 ℃,pH 2.0 for 3 h,which were 5.6-fold and 4.8-fold respectively of that of the unmodified peanut shell.This adsorption results,achieved only at high acidity,indicated that the protonized amidogen on the surface of peanut shells adsorbed anionic dyes through electrostatic attraction.Additionally,the adsorption isotherm obey the Langmuir model demonstrating chemical adsorption.Moreover,the adsorption process agreed well with quasi-second order kinetic equation.关键词
花生壳粉/乙二胺/改性/吸附/阴离子染料Key words
peanut shell/ethanediamine/modification/adsorption/anionic dye分类
化学化工引用本文复制引用
李步海,厉林静,孙小梅..乙二胺改性花生壳粉吸附阴离子染料的研究[J].中南民族大学学报：自然科学版,2011,30(3):20-24,5.基金项目
国家民委院校科研基金资助项目(MJY00004) （MJY00004）
