作　　者： ; ; ;

机构地区： 东北林业大学材料科学与工程学院生物质材料科学与技术教育部重点实验室

出　　处： 《中国造纸学报》 2009年第3期93-96,共4页

摘　　要： 以不同摩尔比的镁与铝制备了一系列水滑石,考察了其对造纸系统中阴离子垃圾模拟物如苯甲酸、苯酚和油酸的吸附性能。结果表明,对苯甲酸和苯酚的吸附,随着镁与铝摩尔比的增加,吸附量逐渐增大,对苯甲酸的吸附效果比苯酚好,两者的吸附等温线均符合Freundlich模型;对油酸的吸附率可达99%以上。 Mg-Al hydrotalcites with different Mg/Al molar ratios were prepared, the adsorption experiments were carried out using benzoic acid, phenol, D-glucuronic acid and oleic acid as mimic anionic trash in papermaking furnish. The results indicated that the amounts of the benzoic acid and phenol adsorbed by LDH increase with increasing Mg/Al molar ratio. In general, benzoic acid adsorption on the LDH is better than phenol. The adsorption isotherms of both benzoic acid and phenol are in agreement with the Freundlich model. The absorption of D-glucuronic acid in the range of low concentration is more effective than in high concentration. The optimized LDH are capable of removing oleic acid by 99%.

关 键 词： 水滑石 镁铝摩尔比 吸附 阴离子垃圾

领　　域： [轻工技术与工程]