Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2030
Título: Remediation of sandy soils contaminated with hydrocarbons and halogenated hydrocarbons by soil vapour extraction
Autor: Albergaria, José Tomás
Alvim-Ferraz, Maria da Conceição M.
Delerue-Matos, Cristina
Palavras-chave: Soil vapour extraction
Sandy soils
Water content
Process efficiency
Remediation time estimation
Data: 2012
Editora: Elsevier
Relatório da Série N.º: Journal of Environmental Management; Vol. 104
Resumo: This paper presents the study of the remediation of sandy soils containing six of the most common contaminants (benzene, toluene, ethylbenzene, xylene, trichloroethylene and perchloroethylene) using soil vapour extraction (SVE). The influence of soil water content on the process efficiency was evaluated considering the soil type and the contaminant. For artificially contaminated soils with negligible clay contents and natural organic matter it was concluded that: (i) all the remediation processes presented efficiencies above 92%; (ii) an increase of the soil water content led to a more time-consuming remediation; (iii) longer remediation periods were observed for contaminants with lower vapour pressures and lower water solubilities due to mass transfer limitations. Based on these results an easy and relatively fast procedure was developed for the prediction of the remediation times of real soils; 83% of the remediation times were predicted with relative deviations below 14%.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2030
ISSN: 0301-4797
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0301479712001521
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