羧基化胶原纤维吸附剂对Cr(Ⅲ)的吸附性能研究  

Adsorption Performance of Cr(Ⅲ) on Carboxylated Collagen Fiber

作　　者：王学川[1] 步巧巧[1] 强涛涛[1] 任龙芳[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021

出　　处：《中国皮革》2014年第1期19-22,28,共5页China Leather

基　　金：国家自然基金项目(21076120);陕西省教育厅项目(12JK0594);博士后基金项目(2012M521733);陕西省科研创新团队(2013KCT-08);陕西科技大学研究生创新基金项目

摘　　要：以乙醛酸为改性剂对胶原纤维进行羧基化改性,制备羧基化胶原纤维吸附剂,并以铬粉溶液为处理对象,对比研究了羧基化改性前后胶原纤维吸附剂对Cr(Ⅲ)的吸附性能。通过单因素试验分别考察了温度、时间、pH、吸附剂用量、铬液初始浓度及盐离子(Na+、Ca2+)浓度对吸附过程的影响,结果表明:羧基化改性后胶原纤维对Cr(Ⅲ)的吸附能力比改性前提高了74.13%,吸附的佳pH值及温度分别为4.5和45℃,溶液中Na+、Ca2+离子的存在会对吸附过程产生抑制作用,并且随着其离子浓度的增加,抑制作用增强。The carboxylated collagen fiber （CCF） was prepared by modifying collagen fiber （CF） with glyoxylic acid. With chromium solution serving as a study target, the characteristics of adsorption of Cr（ Ⅲ） on the collagen fiber（CF） and carboxyla- ted collagen fiber（CCF） were studied. The effect of temperature, time, pH, adsorbent dosage, initial concentration and salt ion concentration （Na ＋ , Ca2＋ ） during the adsorption process were studied through the single factor experiments. The results indicates that the adsorption ability of CCF of Cr（ Ⅲ ） increases about 74.13% after modifing with glyoxalic acid than CF, the optimal pH and temperature of adsorption are 4.5 and 45℃, respectively. The salt ions （Na＋ , Ca2＋） in the solution will have inhibitory effect on the adsorption process

关 键 词：铬粉 乙醛酸 胶原纤维 吸附性能 

分 类 号：X703[环境科学与工程—环境工程]