The desorption characteristics of organic pollutants were determined for different media. Emphasis was placed on the desorption of policyclic aromatic hydrocarbons (PAHs) and BTEX (Benzene, Toluene, Ethylbenzene, Xylenes). The first group includes substances that sorb strongly to the soil, are only partially soluble in water and are non volatile. The separation of the solid phase from the eluate was found to be especially crucial to the testing. The second group comprises volatile compounds with a relative high solubility in water. In relation to the testing of the substance leaching, dispersion of the compounds to the air was the critical issue. Factors that have been investigated in more detail are the effects of the organic carbon content of the media, the contact time between the material and the leaching medium, the liquid to solid ratio (L/S) and the facilitated leaching due to transport with soil-constituent DOC, colloids or particles. The experiments include both batch and column tests

Leaching of organic compounds from waste and soils

RAGA, ROBERTO
2005

Abstract

The desorption characteristics of organic pollutants were determined for different media. Emphasis was placed on the desorption of policyclic aromatic hydrocarbons (PAHs) and BTEX (Benzene, Toluene, Ethylbenzene, Xylenes). The first group includes substances that sorb strongly to the soil, are only partially soluble in water and are non volatile. The separation of the solid phase from the eluate was found to be especially crucial to the testing. The second group comprises volatile compounds with a relative high solubility in water. In relation to the testing of the substance leaching, dispersion of the compounds to the air was the critical issue. Factors that have been investigated in more detail are the effects of the organic carbon content of the media, the contact time between the material and the leaching medium, the liquid to solid ratio (L/S) and the facilitated leaching due to transport with soil-constituent DOC, colloids or particles. The experiments include both batch and column tests
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2534925
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