Evolution of inorganic pollutants from landfills in shallow aquifers of different hydrogeological systems in Lithuania
| Autor: | Jurga Arustienė, Arūnas Jurevičius, Gintarė Slavinskienė |
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| Rok vydání: | 2018 |
| Předmět: |
Pollution
Iron Health Toxicology and Mutagenesis media_common.quotation_subject 0208 environmental biotechnology Carbonates Aquifer 02 engineering and technology 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Chlorides Environmental Chemistry Magnesium Groundwater 0105 earth and related environmental sciences media_common Pollutant geography Hydrogeology geography.geographical_feature_category Sulfates Water Pollution Environmental engineering Lithuania General Medicine Refuse Disposal 020801 environmental engineering Dilution Waste Disposal Facilities chemistry Carbonate Environmental science Calcium Hydrology Saturation (chemistry) Oxidation-Reduction Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Science and Pollution Research. 25:33709-33723 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-018-3334-y |
| Popis: | This study examines the patterns of evolution in inorganic macrocomponent speciation and the saturation state of the landfill leachate-polluted groundwater of three closed unlined landfills that are located in different hydrogeological systems (open, semi-open and closed) but are similar in both their volumes of landfill waste and the hazard levels of their landfill pollutants. Multivariate statistical analysis and geochemical modelling were conducted. The results showed that as the intensity of landfill pollution dispersion in groundwater along the flow path decreased, hydrochemical and hydrodynamic processes occurred with different intensities in open, semi-open and closed hydrogeological systems. In the open hydrogeological system, the processes of sulphate reduction, iron oxidation and chloride dilution and dispersion were up to 10-30% more intensive than those in the semi-open and closed hydrogeological systems. In the semi-open and closed hydrogeological systems, the processes of calcium, magnesium and iron carbonate equilibrium shifting towards carbonate precipitation were up to 15-40% more intensive than those in the open hydrogeological system. The results obtained in this research may be used to predict the dispersion of pollution in the groundwater of landfills located in similar hydrogeological systems and to facilitate the selection of prevention measures to limit pollution dispersion in groundwater. |
| Databáze: | OpenAIRE |
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