壳聚糖吸附去除水中腐殖酸的研究  

Adsorption of Humic Acid in Aqueous Solution by Chitosan

作　　者：赵彤[1] 刘智凡 敖凤娇 李雪[1] 欧晓霞[1] 

机构地区：[1]大连民族学院环境与资源学院,辽宁大连116600

出　　处：《天津农业科学》2014年第7期96-98,共3页Tianjin Agricultural Sciences

基　　金：大连民族学院"大学生创新创业训练计划"项目(X2013135);太阳鸟项目(tyn13308;tyn13307)

摘　　要：研究了壳聚糖对溶液中腐殖酸的去除效果,探讨反应进行时间、pH值、壳聚糖初始浓度、腐殖酸初始浓度、各金属离子浓度等因素对壳聚糖去除溶液中腐殖酸效果的影响。结果表明,pH值是影响壳聚糖吸附腐殖酸的重要因素,适宜pH值是6;初始吸附过程非常快,壳聚糖的浓度为20mg·L-1,吸附20 min时去除率即达到84.9%。在一定浓度范围内(25～150 mg·L-1),Ca2+、Na+、K+的存在对壳聚糖吸附性能的影响是比较微小的。The effect of Chitosan on the removal of humic acid from aqueous solution was studied. The factors such as reaction time, pH values, initial concentrations of Chitosan and humic acid, and metal ion concentration on the removal of humic acid in solution by Chitosan were discussed. The results showed that pH values were the important factor influencing the adsorption of humic acid by Chitosan, and the suitable pH value was 6. The initial adsorption process was very quick, and the 84.9% removal of humic acid in water was achieved when the Chitosan concentration was 20 mg· L^-1 after 20 min. At a certain concentration （25 -150 mg· L^-1）, the presence of Ca2＋, Na＋ and k＋ affected relatively small the adsorption properties of Chitosan.

关 键 词：壳聚糖 腐殖酸 去除 

分 类 号：O636.9[理学—高分子化学]