摘要
以云南砚山膨润土为原料,Al^(3+)和Fe^(3+)为柱化剂,采用水热离子交换法,在不同B值(OH-/M^(3+)物质的量之比)和不同Al/Fe条件下制备Al/Fe多核羟基阳离子柱撑膨润土,并用其作为吸附剂吸附Cr(Ⅵ)离子含量为100 mg/L的模拟废水。结果表明,原土的吸附率较低,柱撑后的膨润土有很好吸附效果,吸附率均在90%以上,其中B值为2.5,Al/Fe为1∶10条件下,Cr(Ⅵ)的吸附率达到99.81%。
Al/Fe-pillared bentonite was prepared by hydro-thermal ino-exchange method with Yunnan Yanshan bentonites as raw material, Al3＋ and Fe3＋ as pillaring agent, and under different B value which was the molar ratio of OH-/M3＋ and different Al/Fe ratio conditions. The obtained Al/Fe-pillared bentonite was used as a adsorbent for 100 mg/L Cr（Ⅵ） wastewater. The results showed that Al/Fe-pillared bentonite had good Cr（Ⅵ） adsorption efficiency which above 90% in every experiments, and in the conditions of B=2.5, Al/Fe= 1 ： 10, the Cr（VI） adsorption efficiency reached 99.81%, while the raw bentonite had a very low adsorption efficiency.
出处
《广州化学》
CAS
2016年第6期46-49,共4页
Guangzhou Chemistry
基金
昆明理工大学自然科学研究基金资助项目(KKSY201322038)
昆明理工大学分析测试基金(20130404
20140609)
广东省环境污染控制与修复技术重点实验室(中山大学)开放基金(2013K0006)
关键词
柱撑膨润土
吸附
含铬废水
pillared bentonite
adsorbent
polluted water contains potassium dichromate
