Biogeochemical Permeable Barrier Based on Zeolite and Expanded Clay for Immobilization of Metals in Groundwater

Groundwater samples contaminated with potentially toxic elements (PTE), including metals and nitrate ions, were collected at a depth of 8–10 m from the Siberian Chemical Plant multicomponent waste storage. The possibility developing permeable biogeochemical barrier zeolite lightweight expanded clay aggregate (LECA) was investigated. mass fraction properties several (Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg Pb) determined to investigate their fixation on chosen materials given experimental conditions. It established that in sulfide or phosphate forms can be effectively immobilized via biomineralization LECA, whereas non-chalcogen group are primarily retained form phosphates. formation biogenic deposits iron sulfide, which serve as sorption–precipitation phase during immobilization majority metals, is an important aspect LECA loading process. use two-component feasible based data obtained. assumed metal processes occur due sorption mechanisms zone loading. Microbial removal phases under reducing conditions, geochemical for expected zone.