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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
27/02/2013 |
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Data da última atualização: |
16/05/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
FRANCO, M. G.; CORRÊA, S. M.; MARQUES, M.; PEREZ, D. V. |
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Afiliação: |
MARCIO GONÇALVES FRANCO, UERJ; SERGIO MACHADO CORRÊA, UERJ; MARCIA MARQUES, UERJ/LINNAEUS UNIVERSITY; DANIEL VIDAL PEREZ, CNPS. |
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Título: |
Emission of VOC and GHG by bioremediation of soil contaminated with diesel. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: LINNAEUS ECO-TECH, 8., 2012, Kalmar. Proceedings [...]. Kalmar: Linnaeus University, 2012. p. 634-643. |
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DOI: |
https://doi.org/10.15626/Eco-Tech.2012.030 |
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Idioma: |
Inglês |
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Conteúdo: |
Bioremediation processes have been credited fo r reducing high levels of organic contaminants from soils. However, during bioremediation of dies el contaminated soils, for instance, diesel is converted to volatile organic compounds (VOC) and greenhouse gases (GHG), which means that such remediation technique contributes to th e greenhouse effect. The ongoing construction of a large petrochemical industrial region in Rio de Janeiro Metropolitan Area (COMPERJ) and the transportation of large volumes of oil byproducts (mainly diesel), have raised deep concerns regarding accidents that may re sult in soil and air contaminat ion. When the problem comes, remediation techniques shall be applied. The obj ective of this study was to characterize the emission of GHG and VOC during bioremediation of so ils contaminated with diesel oil in pilot scale. Soil samples contaminated with 0.5, 2.0 and 4.0 w/w% diesel oil were kept during 3 months in glass rectors (2 L internal volume) kept under an aerobic/anoxic conditions. The soil moisture was controlled at 80% of field capacity. Bioremediation processes were investigated with nutrient?s adjustment (biostimulation), no adjustment (natural attenuation) and sterilized soil (abiotic process). The gases emitted from different reactors were collected in activated carbon cartridges and the GHG were collected in Tedlar bags. The chemical analyzes were performed using a gas chromatograph (Agilent 7690) with multi-detection using FID for CH 4 , ECD for N 2 O and TCD for CO 2 . VOC were analyzed using a mass spectrometry detector (Varian 450GC MS220). The results indicated that gaseous sa mples contained high concentrations of CO 2 but low concentrations of CH 4 and N 2 O. The differences in composition of the gas emitted from the reactors regarding CO 2 were statistically not significant. Preliminarily, regarding VOC emissions, such as alkanes and alkenes (both branched), cy cloalkanes, and aromatic substituted (such as ethyl benzene), the compounds with higher emissions were cycloalkanes and branched alkanes. MenosBioremediation processes have been credited fo r reducing high levels of organic contaminants from soils. However, during bioremediation of dies el contaminated soils, for instance, diesel is converted to volatile organic compounds (VOC) and greenhouse gases (GHG), which means that such remediation technique contributes to th e greenhouse effect. The ongoing construction of a large petrochemical industrial region in Rio de Janeiro Metropolitan Area (COMPERJ) and the transportation of large volumes of oil byproducts (mainly diesel), have raised deep concerns regarding accidents that may re sult in soil and air contaminat ion. When the problem comes, remediation techniques shall be applied. The obj ective of this study was to characterize the emission of GHG and VOC during bioremediation of so ils contaminated with diesel oil in pilot scale. Soil samples contaminated with 0.5, 2.0 and 4.0 w/w% diesel oil were kept during 3 months in glass rectors (2 L internal volume) kept under an aerobic/anoxic conditions. The soil moisture was controlled at 80% of field capacity. Bioremediation processes were investigated with nutrient?s adjustment (biostimulation), no adjustment (natural attenuation) and sterilized soil (abiotic process). The gases emitted from different reactors were collected in activated carbon cartridges and the GHG were collected in Tedlar bags. The chemical analyzes were performed using a gas chromatograph (Agilent 7690) with multi-detection using FID for CH 4 , ECD ... Mostrar Tudo |
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Palavras-Chave: |
GHG; VOC. |
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Thesaurus Nal: |
Bioremediation; Greenhouse gases. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/951494/1/Emission-of-VOC-and-GHG-by-bioremediation.pdf
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Marc: |
LEADER 02740nam a2200205 a 4500
001 1951494
005 2022-05-16
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.15626/Eco-Tech.2012.030$2DOI
100 1 $aFRANCO, M. G.
245 $aEmission of VOC and GHG by bioremediation of soil contaminated with diesel.$h[electronic resource]
260 $aIn: LINNAEUS ECO-TECH, 8., 2012, Kalmar. Proceedings [...]. Kalmar: Linnaeus University, 2012. p. 634-643.$c2012
520 $aBioremediation processes have been credited fo r reducing high levels of organic contaminants from soils. However, during bioremediation of dies el contaminated soils, for instance, diesel is converted to volatile organic compounds (VOC) and greenhouse gases (GHG), which means that such remediation technique contributes to th e greenhouse effect. The ongoing construction of a large petrochemical industrial region in Rio de Janeiro Metropolitan Area (COMPERJ) and the transportation of large volumes of oil byproducts (mainly diesel), have raised deep concerns regarding accidents that may re sult in soil and air contaminat ion. When the problem comes, remediation techniques shall be applied. The obj ective of this study was to characterize the emission of GHG and VOC during bioremediation of so ils contaminated with diesel oil in pilot scale. Soil samples contaminated with 0.5, 2.0 and 4.0 w/w% diesel oil were kept during 3 months in glass rectors (2 L internal volume) kept under an aerobic/anoxic conditions. The soil moisture was controlled at 80% of field capacity. Bioremediation processes were investigated with nutrient?s adjustment (biostimulation), no adjustment (natural attenuation) and sterilized soil (abiotic process). The gases emitted from different reactors were collected in activated carbon cartridges and the GHG were collected in Tedlar bags. The chemical analyzes were performed using a gas chromatograph (Agilent 7690) with multi-detection using FID for CH 4 , ECD for N 2 O and TCD for CO 2 . VOC were analyzed using a mass spectrometry detector (Varian 450GC MS220). The results indicated that gaseous sa mples contained high concentrations of CO 2 but low concentrations of CH 4 and N 2 O. The differences in composition of the gas emitted from the reactors regarding CO 2 were statistically not significant. Preliminarily, regarding VOC emissions, such as alkanes and alkenes (both branched), cy cloalkanes, and aromatic substituted (such as ethyl benzene), the compounds with higher emissions were cycloalkanes and branched alkanes.
650 $aBioremediation
650 $aGreenhouse gases
653 $aGHG
653 $aVOC
700 1 $aCORRÊA, S. M.
700 1 $aMARQUES, M.
700 1 $aPEREZ, D. V.
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Registro original: |
Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/03/2000 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
ARAUJO, J. M. de A.; NICOLINO, A. P. N.; BLATT, C. |
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Afiliação: |
JÚLIO MARIA DE ANDRADE ARAÚJO, Universidade Federal de Viçosa- UFV/Departamento de Tecnologia de Alimentos; ANA PAULA NOGUEIRA NICOLINO, Universidade Federal de Viçosa- UFV; CELSO BLATT, HP Brasil. |
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Título: |
Utilização do dióxido de carbono supercritico na concentração de tocoferois do destilado desodorizado do óleo de soja. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 1, p. 201-205, jan. 2000. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Utilization of supercritical carbon dioxide for concentration of tocopher ols |
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Conteúdo: |
O objetivo deste trabalho foi examinar a possibilidade do uso do dioxido de carbono supercritico na extracao e concentracao de tocoferois a partir do destilado desodorizado do oleo de soja. Trata-se da combinacao sequencial de duas extracoes: pre-extracao a temperatura de 80.C e pressao de 76 bars para remocao de substancias interferentes e extracao dos tocoferois a 50.C e 197 bars. O coletor utilizado foi o octadesil-silica, lavado com acetonitrila na pre-extracao e hexano na extracao, e a analise dos extratos obtidos foi feita por cromatografia de fase gasosa em coluna capilar. O resultado mostrou que o desodorizado do oleo de soja, contendo inicialmente 9,2% de tocoferois totais, pode ser concentrado para 40,6%. Sob as condicoes otimizadas, a extracao pode ser realizada em 37 minutos. |
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Palavras-Chave: |
Supercritical extraction. |
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Thesagro: |
Cromatografia; Extração Supercrítica; Soja. |
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Thesaurus NAL: |
gas chromatography; soybeans. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16783/1/pab97_163.pdf
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Marc: |
LEADER 01605naa a2200229 a 4500
001 1101273
005 2019-02-25
008 2000 bl uuuu u00u1 u #d
100 1 $aARAUJO, J. M. de A.
245 $aUtilização do dióxido de carbono supercritico na concentração de tocoferois do destilado desodorizado do óleo de soja.
260 $c2000
500 $aTítulo em inglês: Utilization of supercritical carbon dioxide for concentration of tocopher ols
520 $aO objetivo deste trabalho foi examinar a possibilidade do uso do dioxido de carbono supercritico na extracao e concentracao de tocoferois a partir do destilado desodorizado do oleo de soja. Trata-se da combinacao sequencial de duas extracoes: pre-extracao a temperatura de 80.C e pressao de 76 bars para remocao de substancias interferentes e extracao dos tocoferois a 50.C e 197 bars. O coletor utilizado foi o octadesil-silica, lavado com acetonitrila na pre-extracao e hexano na extracao, e a analise dos extratos obtidos foi feita por cromatografia de fase gasosa em coluna capilar. O resultado mostrou que o desodorizado do oleo de soja, contendo inicialmente 9,2% de tocoferois totais, pode ser concentrado para 40,6%. Sob as condicoes otimizadas, a extracao pode ser realizada em 37 minutos.
650 $agas chromatography
650 $asoybeans
650 $aCromatografia
650 $aExtração Supercrítica
650 $aSoja
653 $aSupercritical extraction
700 1 $aNICOLINO, A. P. N.
700 1 $aBLATT, C.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 35, n. 1, p. 201-205, jan. 2000.
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