The removal or reduction of heavy metal leakage from waste leachates into the soil and aquatic environment has been of interest for many years. A suitable solution is to enclose wastes in the impermeable, adsorbent, and durable layers that tolerate different ambient conditions. This indicates the need to consider geotechnical parameters along with the adsorption behavior of the adsorbents. In routine practice, a mixture of bentonite clay, zeolite, and geo-synthetics is used. This study aims to introduce suitable mixtures of zeolite and bentonite as natural adsorbents for sealing/adsorption of heavy metals in liner systems. Various mixtures of bentonite and zeolites of clinoptilolite and clinoptilolite-heulandite types were examined. Twenty-three mixed and non-mixed samples were prepared and tested. Once the soil index and soil compaction parameters were determined, an experiment program was designed to evaluate the cracking potential related to the freeze-drying process, as well as the adsorption potential of the samples at different ambient conditions (i.e., temperature and pH). It is observed that increasing the temperature up to 40 °C increases the adsorption potential. According to the results, the optimal adsorbents were found in the mixtures of zeolite/bentonite with the ratio of 4:1 in the first place and zeolite/bentonite with a ratio of 3:1 in the second, under various conditions.

从废物浸出物中去除或减少重金属泄漏到土壤和水生环境中已引起人们的兴趣很多年了。合适的解决方案是将废物封装在可耐受不同环境条件的不可渗透，吸附剂和耐用层中。这表明需要考虑岩土工程参数以及吸附剂的吸附行为。在常规实践中，使用膨润土，沸石和土工合成材料的混合物。这项研究旨在介绍合适的沸石和膨润土混合物作为天然吸附剂，以密封/吸附衬里系统中的重金属。研究了斜发沸石和斜发沸石-赤铁矿类型的膨润土和沸石的各种混合物。制备并测试了23个混合和非混合样品。一旦确定了土壤指数和土壤压实参数，就设计了一个实验程序来评估与冻干过程有关的裂化潜力，以及在不同环境条件（即温度和pH）下样品的吸附潜力。观察到将温度升高到40°C会增加吸附电位。根据结果​​，在各种条件下，首先以4：1的比例的沸石/膨润土和其次为3：1的比例的沸石/膨润土的混合物中发现了最佳的吸附剂。观察到将温度升高到40°C会增加吸附电位。根据结果​​，在各种条件下，首先以4：1的比例的沸石/膨润土和其次为3：1的比例的沸石/膨润土的混合物中发现了最佳的吸附剂。观察到将温度升高到40°C会增加吸附电位。根据结果​​，在各种条件下，首先以4：1的比例的沸石/膨润土和其次为3：1的比例的沸石/膨润土的混合物中发现了最佳的吸附剂。