提取腐植酸后的残渣对Cu^(2+)的吸附性能研究  

Study on the Adsorption Property of the Residue after Humid Acid Extraction to Cu^(2+)

作　　者：李静萍[1] 郑李纯[1] 陈峰[1] 许力[1] 古元梓[1] 

机构地区：[1]兰州交通大学化学与生物工程学院,兰州730070

出　　处：《化学通报》2010年第8期719-723,共5页Chemistry

基　　金：甘肃省自然科学基金项目(3ZX062-B25-002);兰州交通大学校项目(40427)资助

摘　　要：研究了天祝褐煤中提取腐植酸后的残渣对Cu2+的吸附性能。结果表明,在室温(20～25℃)条件下,吸附平衡时间约为5h,吸附最佳pH为5～6,相关系数R为0.9889,特性常数n为3.449。吸附符合Freundfich吸附等温式,提取腐植酸后的残渣对Cu2+有较好的吸附性能,其吸附过程可用Ho准二级反应动力学模型描述。The adsorption property of the residue from Tianzhu Lignite after humic acid extraction to Cu^2＋ had been studied.The result showed that the adsorption equilibrium time was about 5h at room temperature（20 ～ 25℃）,correlation coefficient R was 0.9889,characteristic constant n was 3.499,optimum pH range was 5 ～ 6.The adsorption coincided with Freundlich adsorption isothermal curve.The residue after humic acid extraction has good adsorption property to Cu^2＋.The adsorption process can be described by Ho pseudo second order dynamic model.

关 键 词：CU^2+ 腐植酸 残渣 吸附 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]