EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.

Detalhes bibliográficos
Autor(a) principal: MAIA, C. M. B. de F.
Data de Publicação: 2012
Outros Autores: FUKAMACHI, C. R. B., PICCOLO, A., MANGRICH, A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/930545
Resumo: The spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge. Infrared spectroscopy reveals a compost rich in hydroxyl and alkyl groups and carboxylates and carbohydrates. The alkyl fraction is abundant in the humic acids and humin. The decreasing of the E4/E6 ratio during composting indicates an enhancement of the organic chains number, with conjugated double bonds. This decreasing would correspond to a reduction of the lignin content and/or formation of porphyrins. The EPR shows that humin presents the highest concentration of free radical and the lowest intensities of the Fe3+.
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spelling EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.Substância húmicaHumificaçãoUV-visThe spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge. Infrared spectroscopy reveals a compost rich in hydroxyl and alkyl groups and carboxylates and carbohydrates. The alkyl fraction is abundant in the humic acids and humin. The decreasing of the E4/E6 ratio during composting indicates an enhancement of the organic chains number, with conjugated double bonds. This decreasing would correspond to a reduction of the lignin content and/or formation of porphyrins. The EPR shows that humin presents the highest concentration of free radical and the lowest intensities of the Fe3+.CLAUDIA MARIA BRANCO DE F MAIA, CNPF; CRISTIANE REGINA BUDZIAK FUKAMACHI, UFPR; ALESSANDRO PICCOLO, Università di Napoli Federico II; ANTONIO SÁLVIO MANGRICH, UFPR.MAIA, C. M. B. de F.FUKAMACHI, C. R. B.PICCOLO, A.MANGRICH, A. S.2012-08-06T11:11:11Z2012-08-06T11:11:11Z2012-08-0620122015-01-09T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Florestal Brasileira, Colombo, v. 32, n. 70, p.117-122, abr./jun. 2012.http://www.alice.cnptia.embrapa.br/alice/handle/doc/930545enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T00:24:41Zoai:www.alice.cnptia.embrapa.br:doc/930545Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T00:24:41falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T00:24:41Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
title EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
spellingShingle EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
MAIA, C. M. B. de F.
Substância húmica
Humificação
UV-vis
title_short EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
title_full EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
title_fullStr EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
title_full_unstemmed EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
title_sort EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.
author MAIA, C. M. B. de F.
author_facet MAIA, C. M. B. de F.
FUKAMACHI, C. R. B.
PICCOLO, A.
MANGRICH, A. S.
author_role author
author2 FUKAMACHI, C. R. B.
PICCOLO, A.
MANGRICH, A. S.
author2_role author
author
author
dc.contributor.none.fl_str_mv CLAUDIA MARIA BRANCO DE F MAIA, CNPF; CRISTIANE REGINA BUDZIAK FUKAMACHI, UFPR; ALESSANDRO PICCOLO, Università di Napoli Federico II; ANTONIO SÁLVIO MANGRICH, UFPR.
dc.contributor.author.fl_str_mv MAIA, C. M. B. de F.
FUKAMACHI, C. R. B.
PICCOLO, A.
MANGRICH, A. S.
dc.subject.por.fl_str_mv Substância húmica
Humificação
UV-vis
topic Substância húmica
Humificação
UV-vis
description The spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge. Infrared spectroscopy reveals a compost rich in hydroxyl and alkyl groups and carboxylates and carbohydrates. The alkyl fraction is abundant in the humic acids and humin. The decreasing of the E4/E6 ratio during composting indicates an enhancement of the organic chains number, with conjugated double bonds. This decreasing would correspond to a reduction of the lignin content and/or formation of porphyrins. The EPR shows that humin presents the highest concentration of free radical and the lowest intensities of the Fe3+.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-06T11:11:11Z
2012-08-06T11:11:11Z
2012-08-06
2012
2015-01-09T11:11:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Pesquisa Florestal Brasileira, Colombo, v. 32, n. 70, p.117-122, abr./jun. 2012.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/930545
identifier_str_mv Pesquisa Florestal Brasileira, Colombo, v. 32, n. 70, p.117-122, abr./jun. 2012.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/930545
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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