G. Burillo, J. Serrano-Gómez, J. Bonifacio-martinez
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引用次数: 9
摘要
用60 Co γ源辐照法制备了甲基丙烯酸二甲胺乙酯接枝聚丙烯(PP)。利用所制得的PP-g-DMAEMA研究了接触时间、初始pH、初始金属离子浓度和温度对Cr(VI)离子吸附的影响。PP-g-DMAEMA在不同初始浓度下对铬的吸附数据符合Freundlich和Langmuir等温线。最大吸附量(amax)为0.3103 × 0 -4 mol g -1。热力学参数ΔH 0， ΔG 0和ΔS 0表明吸附过程为
Adsorption of chromium(VI) on radiation grafted N,N-dimethylaminoethylmethacrylate onto polypropylene, from aqueous solutions
Polypropylene (PP) grafted with dimethylaminoethyl- methacrylate (DMAEMA), was prepared by irradiation with a 60 Co γ source. The obtained PP-g-DMAEMA was used to study the Cr(VI) ion adsorption as a function of contact time, initial pH, initial concen- tration of metal ion and temperature. Chromium adsorption data on PP-g-DMAEMA at various initial concentration fit well the Freundlich and Langmuir isotherms. The maximum adsorption capacity (amax) was found to be 0.3103 × 0 -4 mol g -1 . The thermodynamic parameters ΔH 0 , ΔG 0 and ΔS 0 were estimated showing the adsorption process to
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