期刊
APPLIED CLAY SCIENCE
卷 52, 期 1-2, 页码 184-189出版社
ELSEVIER
DOI: 10.1016/j.clay.2011.02.024
关键词
MCM-41; MCM-48; Organo-clay minerals; Toluene
资金
- Egyptian government
- Scientific Research Academy
This study investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by powder X-ray diffraction (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (K-d) value of toluene (95 +/- 9 L/kg). An organo-clay mineral, Nanomer (R) PGW montmorillonite modified with CTMA bromide (Nanomer (R) 1.28E) showed the maximum K-d value (345 22 L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据