Thermal desorption of HCH: Temperature and time effects
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10973-015-4810-y http://hdl.handle.net/11449/172423 |
Resumo: | To evaluate the effectiveness of the thermal remediation of soil decontamination, samples containing organochlorine insecticide hexachlorocyclohexane (HCH) were subjected to different temperatures depending on the exposure time. For this study, reference material and technical grade HCH were heated separately at β = 1 and 10°C min-1 in a thermogravimetric analyzer and contaminated soil samples were heated in an oven at different temperatures and heating time. To determine gaseous emissions generated during the heating of HCH isomers, HCH technical grade samples were heated in a closed system (reactor) and sample gases/vapors were collected for qualitative analysis. The results indicate that the contaminants are removed from soil to temperatures considerably lower than the respective boiling point. The thermogravimetric curves have shown that heating to 400°C HCH results in fusion processes followed by evaporation, and investigating in the oven, the reduction in HCH concentration present in the contaminated soil depends on the temperature and length of heating. Gaseous emissions detected were from isomers of HCH, chlorine derivatives and benzene compounds. The laboratory tests show that parameters such as temperature, heating time and air flow can influence the thermal decontamination process of the subsoil. |
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Repositório Institucional da UNESP |
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Thermal desorption of HCH: Temperature and time effectsHexachlorocyclohexanePollutionSoilsThermal analysisThermal decontaminationTo evaluate the effectiveness of the thermal remediation of soil decontamination, samples containing organochlorine insecticide hexachlorocyclohexane (HCH) were subjected to different temperatures depending on the exposure time. For this study, reference material and technical grade HCH were heated separately at β = 1 and 10°C min-1 in a thermogravimetric analyzer and contaminated soil samples were heated in an oven at different temperatures and heating time. To determine gaseous emissions generated during the heating of HCH isomers, HCH technical grade samples were heated in a closed system (reactor) and sample gases/vapors were collected for qualitative analysis. The results indicate that the contaminants are removed from soil to temperatures considerably lower than the respective boiling point. The thermogravimetric curves have shown that heating to 400°C HCH results in fusion processes followed by evaporation, and investigating in the oven, the reduction in HCH concentration present in the contaminated soil depends on the temperature and length of heating. Gaseous emissions detected were from isomers of HCH, chlorine derivatives and benzene compounds. The laboratory tests show that parameters such as temperature, heating time and air flow can influence the thermal decontamination process of the subsoil.Institute for Technological Research of the State of São Paulo - IPT, 532 Professor Almeida Prado AvenueDepartment of Chemistry and Environmental Sciences Institute of Biosciences Letters and Exact Sciences IBILCE-Unesp, 2265 Cristóvão Colombo StreetDepartment of Chemistry and Environmental Sciences Institute of Biosciences Letters and Exact Sciences IBILCE-Unesp, 2265 Cristóvão Colombo StreetInstitute for Technological Research of the State of São Paulo - IPTUniversidade Estadual Paulista (Unesp)Araújo, M. M.Ignatius, S. G.Oliveira, A. O.Oliveira, S. S.Fertonani, F. L. [UNESP]Paste, I. A. [UNESP]2018-12-11T17:00:13Z2018-12-11T17:00:13Z2016-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1019-1029application/pdfhttp://dx.doi.org/10.1007/s10973-015-4810-yJournal of Thermal Analysis and Calorimetry, v. 123, n. 2, p. 1019-1029, 2016.1588-29261388-6150http://hdl.handle.net/11449/17242310.1007/s10973-015-4810-y2-s2.0-849543792162-s2.0-84954379216.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Thermal Analysis and Calorimetry0,5870,587info:eu-repo/semantics/openAccess2023-10-12T06:02:34Zoai:repositorio.unesp.br:11449/172423Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:39:19.577695Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Thermal desorption of HCH: Temperature and time effects |
title |
Thermal desorption of HCH: Temperature and time effects |
spellingShingle |
Thermal desorption of HCH: Temperature and time effects Araújo, M. M. Hexachlorocyclohexane Pollution Soils Thermal analysis Thermal decontamination |
title_short |
Thermal desorption of HCH: Temperature and time effects |
title_full |
Thermal desorption of HCH: Temperature and time effects |
title_fullStr |
Thermal desorption of HCH: Temperature and time effects |
title_full_unstemmed |
Thermal desorption of HCH: Temperature and time effects |
title_sort |
Thermal desorption of HCH: Temperature and time effects |
author |
Araújo, M. M. |
author_facet |
Araújo, M. M. Ignatius, S. G. Oliveira, A. O. Oliveira, S. S. Fertonani, F. L. [UNESP] Paste, I. A. [UNESP] |
author_role |
author |
author2 |
Ignatius, S. G. Oliveira, A. O. Oliveira, S. S. Fertonani, F. L. [UNESP] Paste, I. A. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Institute for Technological Research of the State of São Paulo - IPT Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Araújo, M. M. Ignatius, S. G. Oliveira, A. O. Oliveira, S. S. Fertonani, F. L. [UNESP] Paste, I. A. [UNESP] |
dc.subject.por.fl_str_mv |
Hexachlorocyclohexane Pollution Soils Thermal analysis Thermal decontamination |
topic |
Hexachlorocyclohexane Pollution Soils Thermal analysis Thermal decontamination |
description |
To evaluate the effectiveness of the thermal remediation of soil decontamination, samples containing organochlorine insecticide hexachlorocyclohexane (HCH) were subjected to different temperatures depending on the exposure time. For this study, reference material and technical grade HCH were heated separately at β = 1 and 10°C min-1 in a thermogravimetric analyzer and contaminated soil samples were heated in an oven at different temperatures and heating time. To determine gaseous emissions generated during the heating of HCH isomers, HCH technical grade samples were heated in a closed system (reactor) and sample gases/vapors were collected for qualitative analysis. The results indicate that the contaminants are removed from soil to temperatures considerably lower than the respective boiling point. The thermogravimetric curves have shown that heating to 400°C HCH results in fusion processes followed by evaporation, and investigating in the oven, the reduction in HCH concentration present in the contaminated soil depends on the temperature and length of heating. Gaseous emissions detected were from isomers of HCH, chlorine derivatives and benzene compounds. The laboratory tests show that parameters such as temperature, heating time and air flow can influence the thermal decontamination process of the subsoil. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-02-01 2018-12-11T17:00:13Z 2018-12-11T17:00:13Z |
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://dx.doi.org/10.1007/s10973-015-4810-y Journal of Thermal Analysis and Calorimetry, v. 123, n. 2, p. 1019-1029, 2016. 1588-2926 1388-6150 http://hdl.handle.net/11449/172423 10.1007/s10973-015-4810-y 2-s2.0-84954379216 2-s2.0-84954379216.pdf |
url |
http://dx.doi.org/10.1007/s10973-015-4810-y http://hdl.handle.net/11449/172423 |
identifier_str_mv |
Journal of Thermal Analysis and Calorimetry, v. 123, n. 2, p. 1019-1029, 2016. 1588-2926 1388-6150 10.1007/s10973-015-4810-y 2-s2.0-84954379216 2-s2.0-84954379216.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Thermal Analysis and Calorimetry 0,587 0,587 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1019-1029 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128395944394752 |