STAC有机膨润土的表征及其处理垃圾渗滤液的研究

STAC Organic Bentonite:Its Characterization and Use in Treatment of Landfill Leachates

文章以钙基蒙脱石为原料,经钠化后与十八烷基三甲基氯化铵(又称1831,简称STAC)进行离子交换反应,合成有机膨润土,通过XRD、IR、SEM等测试仪,对有机膨润土的结构进行了分析,同时利用改性后的STAC有机膨润土对某垃圾填埋场中的渗滤液进行处理,用GC/MS对处理前后垃圾渗滤液中主要有机组分进行了分析,结果表明,该有机膨润土对垃圾渗滤液中有机物的处理效果明显,去除率达78.5%。

This paper presents STAC organic bentonite as an adsorbent to treat landfill leachates,which is synthesized by the cation-exchange reaction between bentonite and stearyl trimethyl ammonium chloride（STAC）.Its characterization involves investigation of its micro-structure and morphology using an array of instruments such as XRD,IR and SEM.Samples of leachates from a landfill were analyzed using GC/MS before and after being treated by STAC organic bentonite,and the result showed 78.5% of removal of organic matter from the leachate.