摘要
用壳聚糖接枝聚丙烯酸/蛭石复合物作为铜离子(Ⅱ)吸附剂,研究了溶液初始pH值、蛭石在复合物中的质量百分含量、吸附时间,以及溶液初始浓度对复合物样品吸附效果的影响。结果表明,复合物对铜离子的吸附量随着蛭石含量的增加而减小,但复合物中蛭石的含量达到30%时,对铜离子(Ⅱ)的吸附量仍超过220mg/g。吸附行为均符合准二级吸附动力学模型和Langmuir吸附等温线模型。
Batch of adsorption experiments were carried out to remove Cu（Ⅱ） from its aqueous solution using chitosan-g-poly（acrylic acid） /vermiculite（CTS-g-PAA/UVMT） as adsorbents.The factors influencing adsorpion capacity of composites such as initial pH value of the Cu（Ⅱ） solution,the vermiculite content,adsorption time and the initial concentration of the Cu（Ⅱ） solution were investigated.The results showed that the adsorption capacity of CTS-g-PAA/UVMT composites decreases with the increase of the vermiculite content,but the adsorption capacity of samples with 30% the vermiculite content exceeds 220mg/g.The adsorption behaviors of composites showed that the adsorption kinetics and isotherms are in good agreement with pesudo-second–order equation and the Langmuir equation,respectively.
出处
《中国矿业》
北大核心
2010年第10期101-104,116,共5页
China Mining Magazine
基金
甘肃省科技支撑项目"超级吸附微球的研制及在重金属吸附中的应用"(No.0804GKCA03A)
江苏省科技厅太湖专项"新型复合黏土饮用水深度处理材料"(No.BS2007118)资助
关键词
壳聚糖
丙烯酸
蛭石
铜离子(Ⅱ)
吸附
chitosan
acrylic acid
vermiculite
copper ion （Ⅱ）
adsorption
