Thermal Decomposition Kinetics of Humic Substances Extracted from Mid-Rio Negro (Amazon Basin) Soil Samples

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dc.contributor.authorde Oliveira, Luciana Camargo [UNESP]
dc.contributor.authorRibeiro, Clovis Augusto [UNESP]
dc.contributor.authorRosa, Andre Henrique [UNESP]
dc.contributor.authorBotero, Wander Gustavo [UNESP]
dc.contributor.authorRocha, Julio Cesar [UNESP]
dc.contributor.authorCruz Romao, Luciane Pimenta
dc.contributor.authordos Santos, Ademir [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Alagoas (UFAL)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.date.accessioned2014-05-20T13:12:13Z
dc.date.available2014-05-20T13:12:13Z
dc.date.issued2009-01-01
dc.description.abstractIn this work humic substances (HS) extracted from non-flooded (Araca) and flooded (Iara) soils were characterized through the calculation of stability and activation energies associated with the dehydration and thermal decomposition of HS using TGA and DTA, electronic paramagnetic resonance and C/H, C/N and C/O atomic ratios. For HS extracted from flooded soils, there was evidence for the influence of humidity on the organic matter humification process. Observations of thermal behaviour, with elemental analysis, indicated the presence of fossilized organic carbon within clay particles, which only decomposed above 800 C. This characteristic could explain the different thermal stability and pyrolysis activation energies for Iara HS compared to Araca HS.en
dc.description.affiliationUniv Estadual Paulista, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Engn Ambiental, BR-18087180 Sorocaba, SP, Brazil
dc.description.affiliationUniversidade Federal de Alagoas (UFAL), BR-57309005 Arapiraca, AL, Brazil
dc.description.affiliationUniv Fed Sergipe, Dept Quim, BR-49100000 Sao Cristovao, SE, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Engn Ambiental, BR-18087180 Sorocaba, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent1135-1141
dc.identifierhttp://dx.doi.org/10.1590/S0103-50532009000600020
dc.identifier.citationJournal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 20, n. 6, p. 1135-1141, 2009.
dc.identifier.doi10.1590/S0103-50532009000600020
dc.identifier.fileS0103-50532009000600020.pdf
dc.identifier.issn0103-5053
dc.identifier.lattes8498310891810082
dc.identifier.orcid0000-0002-7984-5908
dc.identifier.orcid0000-0002-2042-018X
dc.identifier.scieloS0103-50532009000600020
dc.identifier.urihttp://hdl.handle.net/11449/199
dc.identifier.wosWOS:000268336800020
dc.language.isoeng
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.relation.ispartofjcr1.444
dc.relation.ispartofsjr0,357
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectsoilsen
dc.subjecthumic substancesen
dc.subjectkineticsen
dc.subjectthermal analysisen
dc.subjectAmazonen
dc.titleThermal Decomposition Kinetics of Humic Substances Extracted from Mid-Rio Negro (Amazon Basin) Soil Samplesen
dc.typeArtigo
dcterms.rightsHolderSoc Brasileira Quimica
unesp.author.lattes5228846314663888[3]
unesp.author.lattes8498310891810082[2]
unesp.author.orcid0000-0002-2042-018X[3]
unesp.author.orcid0000-0002-7984-5908[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocabapt
unesp.departmentEngenharia Ambiental - ICTSpt

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