《Water Science & Technology》杂志刊登“使用表面功能化聚氨酯泡沫塑料去除水中氟化物”

作  者：R. J. Krupadam, M. S. Khan and S. Das

刊  物：《Water Science & Technology》，2010年，62卷第4期，759-765页

关键词：吸附；除氟；饮用水净化；聚氨酯泡沫塑料

摘  要：表面功能化聚氨酯泡沫塑料（SPUF）在饮用水除氟中表现出异常高的吸附潜能。SPUF的氟化物吸附动力学试验表明，该材料在60min内快速吸附饱和并且最大吸附容量为7.8 mg g^-1。该吸附等温线与布拉德利方程相吻合。溶液的pH值对SPUF的吸附能力有显著影响。在pH值为6.7时，SPUF吸附材料具有最大吸附容量，pH值在5.8-8.2之间变化时，该吸附材料的吸附容量变化不大。本文综合比较SPUF与其他吸附材料，如：活性炭、泥土、氧化铝和碳纳米管的氟化物吸附能力。SPUF的独特优势在于其能够非常容易的通过使用NaOH或者Ca(OH)₂溶液再生。在间歇和连续系统中SPUF的高吸附容量和易用性使得它成为饮用水除氟的一种新型有效材料。

Adsorption of fluoride from water by surface-functionalized polyurethane foam

Authors: R. J. Krupadam, M. S. Khan and S. Das

Journal: Water Science & Technology, Volume 62, Number 4 (2010), 759-765

Key words: adsorption; defluoridation; drinking water purification; polyurethane foam

Abstract: Surface-functionalized polyurethane foam (SPUF) showed an exceptionally high adsorption potential for defluoridation of drinking water. Kinetic experiments of fluoride adsorption on SPUF demonstrated quick adsorption in first 60 min and then achieved maximum adsorption (7.8 mg g^-1). The adsorption isotherm was described using Bradley equation. The adsorption capacity of SPUF was significantly influenced by the pH of the solution. The highest adsorption capacity was attained at pH 6.7 and no drastic reduction noticed in the adsorption capacity of SPUF at normal pH range (5.8-8.2). The fluoride adsorption capacity of SPUF was compared with other adsorbents like activated carbon, soil, alumina and carbon nanotubes. The added advantage of SPUF adsorbent is, it can be easily recharged by altering the pH of the solution using NaOH or Ca(OH)₂. The high adsorption capacity and easy-to-use nature of SPUF in batch mode and continuous system makes the new adsorbent a promising material for defluoridation of drinking water.

原文链接：http://www.iwaponline.com/wst/06204/wst062040759.htm