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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
06/08/2012 |
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Data da última atualização: |
09/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAIA, C. M. B. de F.; FUKAMACHI, C. R. B.; PICCOLO, A.; MANGRICH, A. S. |
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Afiliação: |
CLAUDIA MARIA BRANCO DE F MAIA, CNPF; CRISTIANE REGINA BUDZIAK FUKAMACHI, UFPR; ALESSANDRO PICCOLO, Università di Napoli Federico II; ANTONIO SÁLVIO MANGRICH, UFPR. |
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Título: |
EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 32, n. 70, p.117-122, abr./jun. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
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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Palavras-Chave: |
Humificação; Substância húmica; UV-vis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102705/1/2012-API-Maia-EPRandDRIFT.pdf
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Marc: |
LEADER 01305naa a2200193 a 4500
001 1930545
005 2015-01-09
008 2012 bl uuuu u00u1 u #d
100 1 $aMAIA, C. M. B. de F.
245 $aEPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge.$h[electronic resource]
260 $c2012
520 $aThe 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+.
653 $aHumificação
653 $aSubstância húmica
653 $aUV-vis
700 1 $aFUKAMACHI, C. R. B.
700 1 $aPICCOLO, A.
700 1 $aMANGRICH, A. S.
773 $tPesquisa Florestal Brasileira, Colombo$gv. 32, n. 70, p.117-122, abr./jun. 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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