Soil processes modify the composition of volatile organic compounds (VOCs) from CO2- and CH4-dominated geogenic and landfill gases: A comprehensive study

Randazzo, A.; Venturi, S.; Tassi, F.

doi:10.1016/j.scitotenv.2024.171483

Cited by 2 publications

(2 citation statements)

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“…Methane is a gas that is slightly soluble in water, but is oxidized in the presence of oxygen [20,80,[84][85][86] and dissolves into carbonic acid, bicarbonate ions, and/or carbonate ions (depending on the pH), which are marked by differences in the isotopic composition of groundwater around landfills, as described below.…”

Section: Gas Pollutionmentioning

confidence: 99%

“…It is a well-known fact-proven by numerous studies-that the migration of gases and leachates causes the formation of polluted zones around landfills [20]. However, the state of contamination varies greatly, depending on natural factors such as the geological structure and permeability of rocks at the base of the landfill, precipitation, and the technical aspects including the condition of the ground protection, the type and size of the landfill, and the amount, type, and duration of waste storage.…”

Section: Introductionmentioning

confidence: 99%

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Carbon and Sulfur Isotope Methods for Tracing Groundwater Contamination: A Review of Sustainable Utilization in Reclaimed Municipal Landfill Areas

Porowska

2024

Sustainability

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Reclaimed landfill areas are excluded from various development options including construction, while contaminated zones around such places have no such restrictions. The successful reclamation of landfills means that the old landfill visually fits in well with its surroundings, but soil and water contamination problems remain valid. Former landfills were built without properly preparing the land, which resulted in the migration of contaminants in groundwater for a long period after these landfills were closed, further resulting in the limited use of such areas, at least for some purposes. Due to the development of cities, landfills formerly located in suburbs are becoming a part of these cities. In order to optimally and safely use these spaces, knowledge regarding the quality of the soil and water environment is necessary. This article presents methodological considerations regarding the use of carbon and sulfur isotope methods to assess groundwater contamination around former municipal waste landfills, especially reclaimed municipal landfills. It has been shown that natural groundwater is characterized by low values of both δ13CDIC and δ34S (δ13CDIC from −20 to −10‰ and δ34S at approximately −5‰), whereas leachate-contaminated groundwater is characterized by high values of both parameters (δ13CDIC from −10 to + 5‰ and δ34S from +5 to +20‰). The aim of this article is to demonstrate that carbon and sulfur isotope methods extended via SWOT analysis are universal and reliable methods for assessing the migration of pollutants, thus facilitating decisions regarding management.

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