Academic Journal
Biogeochemical Permeable Barrier Based on Zeolite and Expanded Clay for Immobilization of Metals in Groundwater
| العنوان: | Biogeochemical Permeable Barrier Based on Zeolite and Expanded Clay for Immobilization of Metals in Groundwater |
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| المؤلفون: | Popova, N.M., Artemiev, G., Zinicovscaia, I., Зиньковская, И., Iushin, N.S., Yushin , N.S., Юшин, Н.С., Demina, L., Boldyrev, K.A., Sobolev, D., Safonov, A.V. |
| المصدر: | Hydrology 1-18 |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | aquifer contamination, biomineralization, lightweight expanded clay aggregate (LECA), mesoporous zeolite, permeable barrier, potentially toxic elements (PTE), sorption |
| الوصف: | Groundwater samples contaminated with potentially toxic elements PTE, including metals and nitrate ions, were collected at a depth of 8ndash;10 m from the Siberian Chemical Plant multicomponent waste storage. The possibility of developing anbsp;permeablenbsp;biogeochemicalnbsp;barriernbsp;withnbsp;zeolitenbsp;and lightweightnbsp;expandednbsp;claynbsp;aggregate LECA was investigated. The mass fraction and properties of several metals Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg and Pb were determined to investigate their fixation on the chosen materials at the given experimental conditions. It was established that metals in sulfide or phosphate forms can be effectively immobilized via biomineralization on LECA, whereas metals from the non-chalcogen group are primarily retained in the form of phosphates. The formation of biogenic deposits of iron sulfide, which serve as a sorptionndash;precipitation phase during the immobilization of the majority of metals, is an important aspect of the LECA loading process. The use of LECA andnbsp;zeolitenbsp;in the form of a two-componentnbsp;barriernbsp;is feasiblenbsp;basednbsp;on the data obtained. It is assumed that metal immobilization processes occur due to sorption mechanisms in the zone ofnbsp;zeolitenbsp;loading. Microbial nitrate removal and the formation of iron sulfide phases under reducing conditions, which form a geochemicalnbsp;barriernbsp;for metals, are expected in the LECA zone. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 23065338 |
| Relation: | https://ibn.idsi.md/vizualizare_articol/174031; urn:issn:23065338 |
| DOI: | 10.3390/hydrology10010004 |
| الاتاحة: | https://ibn.idsi.md/vizualizare_articol/174031 https://doi.org/10.3390/hydrology10010004 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.4529F8C8 |
| قاعدة البيانات: | BASE |
| تدمد: | 23065338 |
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| DOI: | 10.3390/hydrology10010004 |