Modified silicates and porous glass as adsorbents for removal of organic pollutants from water and comparison with activated carbons
Modified silicates and porous glass as adsorbents for removal of organic pollutants from water and comparison with activated carbons
复制标题
DOI：
10.1016/j.clay.2006.04.012
复制
发表时间：
2007-04
影响因子：
5.6
通讯作者：
Dikla Zadaka;Yael G. Mishael;T. Polubesova;C. Serban;S. Nir
中科院分区：
文献类型：
--
作者：
Dikla Zadaka;Yael G. Mishael;T. Polubesova;C. Serban;S. Nir
它表明，各种改性的硅酸盐矿物吸附剂可以用于从水悬浮液中或通过过滤器去除有机污染物。用石英砂和有机胶束-蒙脱石（100：1 w/w）或沸石的混合物填充柱过滤器。胶束-粘土过滤器对0.2 μg/L的二溴化乙烯（EDB）的去除率为91%;对10 ppm的阴离子污染物磺酰磺隆、咪唑喹、甲磺草胺、中性除草定和绿麦隆的去除率为99.9%。相比之下，填充有相同重量的有机阳离子和沙子的活性炭或没有沙子的过滤器去除了47.6%至79%的这些污染物。比较容量测量得到甲磺草胺（初始75 ppm）的去除重量分别对应于过滤器中有机阳离子或活性炭重量的18.7%和5.5%。对于抗生素甲氧苄啶的胶束-粘土系统是没有效率的，粘土矿物蒙脱石和沸石斜发沸石分别产生80%和99.9%的去除从其分散体。斜发沸石/砂过滤器去除率为91%。我们还提出了不同程度的去除异丙隆，苯甲酸，和1，2二氯苯的有机粘土和二氧化硅（控制孔径玻璃（CPG））-聚阳离子固定化胶束（SPIM）或没有固定化胶束的效率。
It is demonstrated that a variety of modified silicate mineral sorbents can be utilized for the removal of organic pollutants from a water suspension or by a filter. Column filters filled with a mixture of quartz sand and organic micelle–montmorillonite (100:1 w/w) or zeolite were constructed. The micelle–clay filter removed 91% of ethylene dibromide (EDB) from an initial solution of 0.2 μg/L and 99.9% of the anionic pollutants sulfosulfuron, imazaquin, sulfentrazone and the neutral bromacil and chlorotoluron from an initial solution of 10 ppm. In contrast a filter filled with activated carbon at the same weight of the organic cation and sand, or without sand removed between 47.6% and 79% of these pollutants. Comparative capacity measurements yielded removal of sulfentrazone (75 ppm initial) at weights corresponding to 18.7% and 5.5% of the weights of the organic cation or activated carbon in the filter, respectively. For the antibiotic trimethoprim the micelle–clay system was not efficient; the clay mineral montmorillonite and the zeolite clinoptilolite yielded respectively 80% and 99.9% removal from its dispersion. A clinoptilolite/sand filter gave 91% removal. We also present varying degrees of efficiencies of removal of isoproturon, benzoic acid, and 1,2 dichlorobenzene by an organo-clay and by silica (controlled pore glass (CPG))-polycation immobilized micelles (SPIM) or without immobilized micelles.