腐植酸与硒的吸附模型研究  

Study on Model of Adsorption for Se on Humic Acid

作　　者：邹光中[1] 任海清[1] 

机构地区：[1]湖北师范学院化学系,湖北黄石435002

出　　处：《稀有金属》2003年第3期413-415,共3页Chinese Journal of Rare Metals

摘　　要：研究了腐植酸对硒 (Ⅳ )的吸附行为 ,探讨了固液比、时间、pH、浓度、温度对吸附的影响 ,发现物理吸附与化学吸附并存 ,其吸附平衡服从Freundlich模型 ,导出Freundlich的吸附等温方程q =kc1 .0 2 ,并推出吸附热ΔH =-17.8kJ·mol- 1 。The adsorption behavior for Se(Ⅳ) on humic acid was studied and the effects of solid to liquid ratio, time, pH, concentration and temperature on the adsorption were investigated. The physical and chemical absorption was observed, and the equation of absorption can be described by Freundlich model. The equation of Freundlich adsorption q=kc 1.02 was obtained and adsorption heat Δ H =-17.8 kJ·mol -1 was found.

关 键 词：腐植酸 硒 吸附 

分 类 号：O647.31[理学—物理化学]