凹凸棒黏土的改性及铬离子吸附性能研究

摘要

通过不同方法对凹凸棒黏土(ATP)活化改性处理,得到不同形貌的 ATP.文章主要探讨了超声时间、热处理温度、酸活化处理浓度等对产物形貌的影响,并通过扫描电子显微镜(SEM)和 XRD对二氧化锰进行了形貌和结构分析.铬离子吸附性能研究表明,在298 K、吸附时间为30 min、pH=5.5的条件下,ATP的最大吸附量为10.8 mg/g.%Different morphologies of attapulgite (ATP)have been obtained by using different modified methods for ATP clay.We mainly discussed the influence of the ultrasonic time,calcination tempera-ture and acid concentration on the product morphology.The morphology and structure of samples were analyzed by scanning electron microscopy (SEM)and X-raydiffraction (XRD).The results showed that maximum adsorption amount of ATP for Cr (VI)adsorption was 10.8 mg/g under condi-tions 298 K,30 min adsorption time and pH 5.5.