摘要
Recently, a renewed interest in techniques for heavy metal removal of wastewater has been growing because of embarking opportunities for industrial applications. We investigated the adsorption capacity of the copper on the poly（vinyl alcohol） hydrogel from the aqueous solution. Chemical structure and water absorption of the hydrogel were studied using FTIR and water uptake measurement, respectively. The results showed that the poly（vinyl alcohol） was crosslinked with glutaraldehyde, and the hydrogel highly exhibited the equilibrium swelling ratio because of its hydrophilicity property. Additionally, it was found that the adsorption process followed the pseudo-second-order kinetics and the mechanism diffusion was controlled by particle and film diffusions.
研究聚乙烯醇水凝胶对废水中铜的吸附能力。分别使用红外光谱分析和吸水量测定方法研究水凝胶的化学结构和吸收行为。结果表明,聚乙烯醇与戊二醛交联形成聚乙烯醇水凝胶,凝胶因它的亲水性而表现出高的平衡溶胀比。另外,凝胶的吸附过程服从准二级动力学,扩散受粒子间扩散和膜扩散控制。
基金
supported by Special Computer Science Project,Faculty of Science at Siracha, Kasetsart University (Grant number 012554)
