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聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究

Keywords: 凝胶,吸附剂,膨润土,,吸附

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Abstract:

制备了一种聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂,重点考察了吸附剂对Cd2+吸附的pH依赖性、吸附动力学和吸附等温线。结果表明,Cd2+溶液pH值对吸附容量有较大影响。在pH=8、吸附时间30min、Cd2+溶液初始浓度0.02mol/L和吸附剂用量0.10g的条件下,吸附剂对Cd2+的饱和吸附量可达294.7mg/g。与膨润土相比,三维网络凝胶吸附剂具有更高的吸附容量和更快的吸附速率。

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