Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/2689 |
Resumo: | Bioventing has emerged as one of the most cost-effective in situ technologies available to address petroleum light-hydrocarbon spills, one of the mostcommonsources of soil pollution. However, themajor drawback associated with this technology is the extended treatment time often required. The present study aimed to illustrate how an intended air-injection bioventing technology can be transformed into a soil vapour extraction effort when the air flow rates are pushed to a stripping mode, thus leading to the treatment of the off-gas resulting fromvolatilisation. As such, a combination of an air-injection bioventing system and a biotrickling filter was applied for the treatment of contaminated soil, the latter aiming at the treatment of the emissions resulting from the bioventing process. With a moisture content of 10%, soil contaminated with toluene at two different concentrations, namely 2 and 14mgg soil−1, were treated successfully using an air-injection bioventing system at a constant air flow rate of ca. 0.13dm3 min−1, which led to the removal of ca. 99% toluene, after a period of ca. 5 days of treatment. A biotrickling filter was simultaneously used to treat the outlet gas emissions, which presented average removal efficiencies of ca. 86%. The proposed combination of biotechnologies proved to be an efficient solution for the decontamination process, when an excessive air flow rate was applied, reducing both the soil contamination and the outlet gas emissions, whilst being able to reduce the treatment time required by bioventing only. |
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Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extractionBioventingBiotrickling filterSoil decontaminationTolueneBioremediationBioventing has emerged as one of the most cost-effective in situ technologies available to address petroleum light-hydrocarbon spills, one of the mostcommonsources of soil pollution. However, themajor drawback associated with this technology is the extended treatment time often required. The present study aimed to illustrate how an intended air-injection bioventing technology can be transformed into a soil vapour extraction effort when the air flow rates are pushed to a stripping mode, thus leading to the treatment of the off-gas resulting fromvolatilisation. As such, a combination of an air-injection bioventing system and a biotrickling filter was applied for the treatment of contaminated soil, the latter aiming at the treatment of the emissions resulting from the bioventing process. With a moisture content of 10%, soil contaminated with toluene at two different concentrations, namely 2 and 14mgg soil−1, were treated successfully using an air-injection bioventing system at a constant air flow rate of ca. 0.13dm3 min−1, which led to the removal of ca. 99% toluene, after a period of ca. 5 days of treatment. A biotrickling filter was simultaneously used to treat the outlet gas emissions, which presented average removal efficiencies of ca. 86%. The proposed combination of biotechnologies proved to be an efficient solution for the decontamination process, when an excessive air flow rate was applied, reducing both the soil contamination and the outlet gas emissions, whilst being able to reduce the treatment time required by bioventing only.ElsevierVeritati - Repositório Institucional da Universidade Católica PortuguesaMagalhães, S.M.C.Jorge, R.M. FerreiraCastro, Paula M. L.2010-10-07T14:32:24Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/2689eng"Journal of Hazardous Materials". ISSN 0304-3894. 170: 2-3 (2009) 711–71510.1016/j.jhazmat.2009.05.008info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-12T17:09:05ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
title |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
spellingShingle |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction Magalhães, S.M.C. Bioventing Biotrickling filter Soil decontamination Toluene Bioremediation |
title_short |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
title_full |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
title_fullStr |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
title_full_unstemmed |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
title_sort |
Investigations into the application of a combination of bioventing and biotrickling filter technologies for soil decontamination processes — A transition regime between bioventing and soil vapour extraction |
author |
Magalhães, S.M.C. |
author_facet |
Magalhães, S.M.C. Jorge, R.M. Ferreira Castro, Paula M. L. |
author_role |
author |
author2 |
Jorge, R.M. Ferreira Castro, Paula M. L. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Magalhães, S.M.C. Jorge, R.M. Ferreira Castro, Paula M. L. |
dc.subject.por.fl_str_mv |
Bioventing Biotrickling filter Soil decontamination Toluene Bioremediation |
topic |
Bioventing Biotrickling filter Soil decontamination Toluene Bioremediation |
description |
Bioventing has emerged as one of the most cost-effective in situ technologies available to address petroleum light-hydrocarbon spills, one of the mostcommonsources of soil pollution. However, themajor drawback associated with this technology is the extended treatment time often required. The present study aimed to illustrate how an intended air-injection bioventing technology can be transformed into a soil vapour extraction effort when the air flow rates are pushed to a stripping mode, thus leading to the treatment of the off-gas resulting fromvolatilisation. As such, a combination of an air-injection bioventing system and a biotrickling filter was applied for the treatment of contaminated soil, the latter aiming at the treatment of the emissions resulting from the bioventing process. With a moisture content of 10%, soil contaminated with toluene at two different concentrations, namely 2 and 14mgg soil−1, were treated successfully using an air-injection bioventing system at a constant air flow rate of ca. 0.13dm3 min−1, which led to the removal of ca. 99% toluene, after a period of ca. 5 days of treatment. A biotrickling filter was simultaneously used to treat the outlet gas emissions, which presented average removal efficiencies of ca. 86%. The proposed combination of biotechnologies proved to be an efficient solution for the decontamination process, when an excessive air flow rate was applied, reducing both the soil contamination and the outlet gas emissions, whilst being able to reduce the treatment time required by bioventing only. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009 2009-01-01T00:00:00Z 2010-10-07T14:32:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.14/2689 |
url |
http://hdl.handle.net/10400.14/2689 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Journal of Hazardous Materials". ISSN 0304-3894. 170: 2-3 (2009) 711–715 10.1016/j.jhazmat.2009.05.008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777303116186648576 |