有机改性凹凸棒石黏土的制备及其对亚甲基蓝的吸附性能

发布时间：2018-05-19 10:35

  本文选题：ATP + 有机改性　； 参考：《材料保护》2016年11期

【摘要】：近年来有机改性成为凹凸棒石(ATP)研究的热点。以十六烷基三甲基溴化铵(CTAB)为改性剂,超声制备了有机改性凹凸棒石黏土(O-ATP),以FTIR、SEM及XRD对O-ATP进行了表征,研究了其对模拟印染废水中亚甲基蓝的吸附行为,探究了改性比例、吸附时间、温度、pH值、吸附剂用量、亚甲基蓝初始浓度对吸附率的影响,通过正交试验优选出了最优吸附条件:吸附剂用量0.6g,吸附时间2h,温度20℃,pH=4。结果显示,在最优条件下,O-ATP对亚甲基蓝的吸附率可达82%,吸附等温线符合Freundlich模型。脱附试验表明O-ATP对亚甲基蓝具有循环再生能力,前3次脱附后吸附率均可以达到66%以上,可提高使用效率。
[Abstract]:In recent years, organic modification of attapulgite has become a hot spot in the research of attapulgite ATP. Using cetyltrimethylammonium bromide (CTAB) as modifier, the organic modified attapulgite clay, O-ATPase, was prepared by ultrasonic method. O-ATP was characterized by FTIR SEM and XRD. The adsorption behavior of methylene blue in simulated printing and dyeing wastewater was studied. The effects of adsorption time, temperature, pH value, adsorbent dosage and initial concentration of methylene blue on the adsorption rate were studied. The optimum adsorption conditions were obtained by orthogonal experiment: the amount of adsorbent 0.6 g, the adsorption time 2 h, the temperature 20 鈩，

本文编号：1909770