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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
12/02/2015 |
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Data da última atualização: |
12/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, M. L. B. da; SOARES, H. M.; FURIGO JÚNIOR, A.; SCHMIDELL, W.; CORSEIUL, H. X. |
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Afiliação: |
MARCIO LUIS BUSI DA SILVA, CNPSA; HUGO MOREIRA SOARES, UFSC; AGENOR FURIGO JÚNIOR, UFSC; WILLIBALDO SCHMIDELL, UFSC; HENRY XAVIER CORSEIUL, UFSC. |
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Título: |
Effects of nitrate injection on microbial enhanced oil recovery and oilfield reservoir souring. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Applied Biochemistry and Biotechnology, v. 174, n. 5, p. 1810-1821, 2014. |
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DOI: |
10.1007/s12010-014-1161-2 |
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Idioma: |
Português |
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Conteúdo: |
Column experiments were utilized to investigate the effects of nitrate injection on sulfate-reducing bacteria (SRB) inhibition and microbial enhanced oil recovery (MEOR). An indigenous microbial consortium collected from the produced water of a Brazilian offshore field was used as inoculum. The presence of 150 mg/L volatile fatty acids (VFA´s) in the injection water contributed to a high biological electron acceptors demand and the establishment of anaerobic sulfate-reducing conditions. Continuous injection of nitrate (up to 25 mg/L) for 90 days did not inhibit souring. Contrariwise, in nitrogen-limiting conditions, the addition of nitrate stimulated the proliferation of ?-Proteobacteria (including SRB) and the associated sulfide concentration. Denitrification-specific nirK or nirS genes were not detected. A sharp decrease in water interfacial tension (from 20.8 to 14.5 mN/m) observed concomitantly with nitrate consumption and increased oil recovery (4.3 % v/v) demonstrated the benefits of nitrate injection on MEOR. Overall, the results support the notion that the addition of nitrate, at this particular oil reservoir, can benefit MEOR by stimulating the proliferation of fortuitous biosurfactant-producing bacteria. Higher nitrate concentrations exceeding the stoichiometric volatile fatty acid (VFA) biodegradation demands and/or the use of alternative biogenic souring control strategies may be necessary to warrant effective SRB inhibition down gradient from the injection wells. |
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Palavras-Chave: |
Nitrate. |
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Thesagro: |
Biotecnologia; Impacto ambiental; Meio ambiente; Nitrato; Óleo; Resíduo químico. |
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Thesaurus Nal: |
Biodegradation; Chemical residues; Environmental impact; Oil fields. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/117935/1/final7466.pdf
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Marc: |
LEADER 02422naa a2200313 a 4500
001 2008529
005 2015-02-12
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1007/s12010-014-1161-2$2DOI
100 1 $aSILVA, M. L. B. da
245 $aEffects of nitrate injection on microbial enhanced oil recovery and oilfield reservoir souring.$h[electronic resource]
260 $c2014
520 $aColumn experiments were utilized to investigate the effects of nitrate injection on sulfate-reducing bacteria (SRB) inhibition and microbial enhanced oil recovery (MEOR). An indigenous microbial consortium collected from the produced water of a Brazilian offshore field was used as inoculum. The presence of 150 mg/L volatile fatty acids (VFA´s) in the injection water contributed to a high biological electron acceptors demand and the establishment of anaerobic sulfate-reducing conditions. Continuous injection of nitrate (up to 25 mg/L) for 90 days did not inhibit souring. Contrariwise, in nitrogen-limiting conditions, the addition of nitrate stimulated the proliferation of ?-Proteobacteria (including SRB) and the associated sulfide concentration. Denitrification-specific nirK or nirS genes were not detected. A sharp decrease in water interfacial tension (from 20.8 to 14.5 mN/m) observed concomitantly with nitrate consumption and increased oil recovery (4.3 % v/v) demonstrated the benefits of nitrate injection on MEOR. Overall, the results support the notion that the addition of nitrate, at this particular oil reservoir, can benefit MEOR by stimulating the proliferation of fortuitous biosurfactant-producing bacteria. Higher nitrate concentrations exceeding the stoichiometric volatile fatty acid (VFA) biodegradation demands and/or the use of alternative biogenic souring control strategies may be necessary to warrant effective SRB inhibition down gradient from the injection wells.
650 $aBiodegradation
650 $aChemical residues
650 $aEnvironmental impact
650 $aOil fields
650 $aBiotecnologia
650 $aImpacto ambiental
650 $aMeio ambiente
650 $aNitrato
650 $aÓleo
650 $aResíduo químico
653 $aNitrate
700 1 $aSOARES, H. M.
700 1 $aFURIGO JÚNIOR, A.
700 1 $aSCHMIDELL, W.
700 1 $aCORSEIUL, H. X.
773 $tApplied Biochemistry and Biotechnology$gv. 174, n. 5, p. 1810-1821, 2014.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Classificação |
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Registro |
Volume |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
11/05/2005 |
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Data da última atualização: |
16/08/2018 |
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Autoria: |
SILVA, F. da; SANTOS, R. H. S.; ANDRADE, N. J. de; BARBOSA, L. C. A.; CASALI, V. W. D.; LIMA, R. R. de; PASSARINHO, R. V. de M. |
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Afiliação: |
Franceli da Silva, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; Ricardo Henrique Silva Santos, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; Nélio José de Andrade, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; Luiz Cláudio Almeida Barbosa, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; Vicente Wagner Dias Casali, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; Renato Ribeiro de Lima, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia; RicardoVaz de Melo Passarinho, Universidade Federal de Viçosa - UFV/Departamento de Fitotecnia. |
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Título: |
Basil conservation affected by cropping season, harvest time and storage period. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 4, p. 323-328, abr. 2005 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Armazenamento e conservação de manjericão após diferentes épocas e horários de colheita. |
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Conteúdo: |
Fresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of essential oil. There was a linear decrease in the content of essential oil, in the chlorophyll content and in the number of mold and yeast colonies during storage. There was no effect of cropping season or harvest hour on essential oil composition, but the eugenol and linalool content increased during storage. Coliforms were under 0.3 MPN g-1 and the number of Staphylococcus aureus was under 1.0x102 UFC g-1. |
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Palavras-Chave: |
bactérias; fungos; linalol; mold; yeast. |
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Thesagro: |
Clorofila; Ocimum Basilicum. |
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Thesaurus NAL: |
chlorophyll; eugenol; linalool. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107894/1/Basil.pdf
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Marc: |
LEADER 02153naa a2200325 a 4500
001 1113955
005 2018-08-16
008 2005 bl uuuu u00u1 u #d
100 1 $aSILVA, F. da
245 $aBasil conservation affected by cropping season, harvest time and storage period.
260 $c2005
500 $aTítulo em português: Armazenamento e conservação de manjericão após diferentes épocas e horários de colheita.
520 $aFresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of essential oil. There was a linear decrease in the content of essential oil, in the chlorophyll content and in the number of mold and yeast colonies during storage. There was no effect of cropping season or harvest hour on essential oil composition, but the eugenol and linalool content increased during storage. Coliforms were under 0.3 MPN g-1 and the number of Staphylococcus aureus was under 1.0x102 UFC g-1.
650 $achlorophyll
650 $aeugenol
650 $alinalool
650 $aClorofila
650 $aOcimum Basilicum
653 $abactérias
653 $afungos
653 $alinalol
653 $amold
653 $ayeast
700 1 $aSANTOS, R. H. S.
700 1 $aANDRADE, N. J. de
700 1 $aBARBOSA, L. C. A.
700 1 $aCASALI, V. W. D.
700 1 $aLIMA, R. R. de
700 1 $aPASSARINHO, R. V. de M.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 40, n. 4, p. 323-328, abr. 2005
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