Adsorption is a well-known phenomenon that causes the remediation of BTEX (Benzene, Toluene, Ethylbenzene, and Xylene). Zeolite is typically useful for the removal of BTEX from groundwater. In this study, the migration of the BTEX plume was investigated in a bench-scale tank model as a shallow aquifer. The objective of this research was to analyze the performance of a natural zeolite in-situ PRB remediation technique. Natural zeolite was applied as a physical permeable reactive barrier. In the first part of the experiment, 40 ml of BTEX as a contaminant was injected at the injection point (BI) into the sand tank. Samples were taken periodically via 14 boreholes for BTEX test for 23 days and analyzed using a GC-FID instrument. The results indicated high removal rates of BTEX by passing through the zeolite barrier. Zeolite barrier reduced the BTEX concentration up to 90% of the initial value. However, the barrier efficiency started to decrease after 132 h since pollution injection reached a minimum amount (%53 of the initial value) due to occupying the free space and grain pore where BTEX was adsorbed onto the surface of zeolite, thereby decreasing the barrier efficiency.

吸附是引起BTEX（苯，甲苯，乙苯和二甲苯）修复的众所周知的现象。沸石通常可用于从地下水中去除BTEX。在这项研究中，以台式蓄水池为浅层含水层研究了BTEX羽流的迁移。这项研究的目的是分析天然沸石原位PRB修复技术的性能。天然沸石用作物理可渗透的反应性屏障。在实验的第一部分中，在注入点（BI）将40毫升BTEX作为污染物注入沙罐。定期通过14个钻孔对样品进行23天的BTEX测试，并使用GC-FID仪器进行分析。结果表明，通过沸石阻挡层对BTEX的去除率很高。沸石阻挡层将BTEX浓度降低到初始值的90％。但是，由于污染注入达到最小量（初始值的53％），因此132小时后，由于占据了BTEX吸附在沸石表面的自由空间和晶粒孔，屏障效率开始下降，从而降低了屏障效率。