Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2032
Título: Sequential application of soil vapor extraction and bioremediation processes for the remediation of ethylbenzene-contaminated soils
Autor: Soares, António Alves
Pinho, Maria Teresa
Albergaria, José Tomás
Domingues, Valentina F.
Alvim-Ferraz, Maria da Conceição M.
De Marco, Paolo
Delerue-Matos, Cristina
Palavras-chave: Ethylbenzene
Soil vapor extraction
Organic matter
Water content
Remediation time
Data: 2012
Editora: Springer
Relatório da Série N.º: Water, Air, & Soil Pollution; Vol. 223, Issue 5
Resumo: Soil vapor extraction (SVE) is an efficient, well-known and widely applied soil remediation technology. However, under certain conditions it cannot achieve the defined cleanup goals, requiring further treatment, for example, through bioremediation (BR). The sequential application of these technologies is presented as a valid option but is not yet entirely studied. This work presents the study of the remediation of ethylbenzene (EB)-contaminated soils, with different soil water and natural organic matter (NOMC) contents, using sequential SVE and BR. The obtained results allow the conclusion that: (1) SVE was sufficient to reach the cleanup goals in 63% of the experiments (all the soils with NOMC below 4%), (2) higher NOMCs led to longer SVE remediation times, (3) BR showed to be a possible and cost-effective option when EB concentrations were lower than 335 mg kgsoil −1, and (4) concentrations of EB above 438 mg kgsoil −1 showed to be inhibitory for microbial activity.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2032
ISSN: 0049-6979
Versão do Editor: http://link.springer.com/article/10.1007/s11270-011-1051-y
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