交联壳聚糖多孔微球对染料的吸附性能

交联壳聚糖多孔微球对染料的吸附性能 Adsorption Behavior of Dyestuff on Cross-Linked Chitosan Porous Microbeads 丁世敏 DING Shi-min~ 1 2 3 first-author 封享华 1 2 3 汪玉庭 1 2 3 马淑兰 1 2 3 武汉大学资源与环境科学学院 武汉大学资源与环境科学学院 1,2 ), FENG Xiang-hua~ 1,2 ), FENG Xiang-hua~ 武汉大学资源与环境科学学院 湖北武汉430072涪陵师范学院化学系四川重庆,408003 武汉大学资源与环境科学学院 湖北武汉430072涪陵师范学院化学系四川重庆,408003 ,湖北,武汉,430072 ,湖北,武汉,430072 研究了环氧氯丙烷交联壳聚糖多孔微球对3种染料的吸附性能,并与活性炭、壳聚糖的吸附性能进行了比较,探讨了染料的初始浓度、溶液pH值、吸附剂用量对吸附量及吸附速率常数的影响.结果表明:在10℃时,交联壳聚糖多孔微球对橙黄Ⅱ的饱和吸附量是活性炭、壳聚糖的4.39,6.68倍,吸附速率是壳聚糖的2.58倍;对3种不同类型的染料:橙黄Ⅱ、活性艳蓝、酸性紫,交联壳聚糖多孔微球的饱和吸附量分别为1182,934,595mg·g-1.当pH=3.0时,吸附量最大;染料初始浓度越大,吸附量越大,吸附速率越小;吸附剂用量越大,平衡吸附量越小,吸附速率越大.交联壳聚糖多孔微球对染料具有很高的吸附容量及较快的吸附速率,且可以再生重复使用. The adsorption behavior of dyestuff on cross-linked chitosan porous microbeads and the compare with reactive carbon and chitosan on adsorption property were studied. The effect on adsorption capacity and adsorption rate constant with respect on initial dye concentration,pH and adsorbent dosage was investigated.The results show that at 10 ℃, the adsorption capacity of cross-linked chitosan porous microbeads for Orange Ⅱ is 4.39, 6.68 times of reactive carbon and chitosan respectively, the adsorption velocity is 2.58 times of chitosan. The adsorption capacity of Orange Ⅱ, reactive blue, and acid violet are 1 182, 934, 595 mg·g -1 respectively.When pH value is 3.0, the adsorption capacity is maximal. With increasing of the initial concentration of dye, the amount of adsorption increased and the adsorption velocity decreased; with increasing of adsorbent dosage, the amout of adsorption decreased and the adsorption velocity increased. Cross-linked chitosan porous microbeads is a kind of potential purificant in treatment of dye wastewater owing to great adsorption capacity, adsorption rate to dye, and prominent ability to regenerate. 交联壳聚糖 多孔微球 吸附 染料 cross-linked chitosan porous microbeads adsorption dyestuff O647.3 教育部高等学校博士学科点专项研究基金资助项目（2000048615） 2004-06-01 2021-04-01 6