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Registros recuperados: 17
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Application of bacterial and yeast biosurfactants for enhanced removal and biodegradation of motor oil from contaminated sand Electron. J. Biotechnol.
Chaprão,Marcos J; Ferreira,Isabela N.S; Correa,Priscilla F; Rufino,Raquel D; Luna,Juliana M; Silva,Elias J; Sarubbo,Leonie A.
Background This study investigated the potential application of two biosurfactants for enhanced removal capability and biodegradation of motor oil contaminated sand under laboratory conditions. The biosurfactants were produced by the yeast Candida sphaerica and by the bacterium Bacillus sp. cultivated in low-cost substrates. The ability of removing motor oil from soil by the two biosurfactants was identified and compared with that of the synthetic surfactants Tween 80 and Triton X-100. Results Both crude and isolated biosurfactants showed excellent effectiveness on motor oil removal from contaminated sand under kinetic conditions (70-90%), while the synthetic surfactants removed between 55 and 80% of the oil. A contact time of 5-10 min under agitation...
Tipo: Journal article Palavras-chave: Bacillus sp; Bioremediation; Candida sphaerica; Petroleum; Sand-packed column.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600014
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Bacterial diversity characterization in petroleum samples from Brazilian reservoirs BJM
Oliveira,Valéria Maia de; Sette,Lara Durães; Simioni,Karen Christina Marques; Santos Neto,Eugênio Vaz dos.
This study aimed at evaluating potential differences among the bacterial communities from formation water and oil samples originated from biodegraded and non-biodegraded Brazilian petroleum reservoirs by using a PCR-DGGE based approach. Environmental DNA was isolated and used in PCR reactions with bacterial primers, followed by separation of 16S rDNA fragments in the DGGE. PCR products were also cloned and sequenced, aiming at the taxonomic affiliation of the community members. The fingerprints obtained allowed the direct comparison among the bacterial communities from oil samples presenting distinct degrees of biodegradation, as well as between the communities of formation water and oil sample from the non-biodegraded reservoir. Very similar DGGE band...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial diversity; Community DNA; Cultivation-independent analysis; Petroleum; 16S rDNA.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300007
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Biodegradation of oil refinery residues using mixed-culture of microorganisms isolated from a landfarming BABT
Morais,Eduardo Beraldo de; Tauk-Tornisielo,Sâmia Maria.
In this study, the potential for using an inoculum composed of a mixed-culture of bacteria and fungi, isolated from a landfarming at the Paulínia Oil Refinery, Brazil, to degrade oil residues generated in the process of petroleum refinement was investigated. The isolation of these microorganisms was carried out beforehand, assuming that they would be better adapted to petroleum hydrocarbons, as the landfarming consisted of an area impacted by the deposit of such compounds. The Bartha and Pramer respirometric test was used to measure the rate of biodegradation of the hydrocarbons by the mixed-culture of microorganisms via the evolution of CO2. The results obtained with respect to the efficiency of biodegradation showed no significant differences...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodegradation; Oil residue; Petroleum; Inoculum; Mixed-culture.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600029
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Commodities agrícolas e preço do petróleo. Repositório Alice
BRANDÃO, A. S. P.; ALVES, E. R. de A..
Este artigo tem por objetivo documentar estatisticamente a relação entre preços internacionais de produtos agrícolas e o preço internacional do petróleo. Inicialmente caracteriza-se a relação entre o preço do petróleo e o preço da ureia e, em seguida, como o preço desta e das commodities escolhidas para o estudo se comportam. Os resultados mostram que a tendência no preço desses produtos é influenciada de maneira significativa pela tendência no preço do petróleo. As elasticidades estimadas estão entre 0,47 e 0,61, indicando que entre 50% e 60% das variações no preço do petróleo são transmitidas para os produtos. Ademais, choques transitórios no preço do petróleo têm impactos fortes e duradouros sobre os preços desses produtos.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estatística agrícola; Produto; Preço internacional; Petróleo; Ureia; Agricultural products; Statistical analysis; Products and commodities; Petroleum; Urea.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/962648
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Corporate Social Responsibility or Government Regulation? Evidence on Oil Spill Prevention Ecology and Society
Frynas, Jedrzej G; Middlesex University Business School; g.frynas@mdx.ac.uk.
Tipo: Peer-Reviewed article Palavras-chave: Corporate Social Responsibility; Oil spill prevention; Oil spills; Petroleum; Regulation; Voluntary regulation.
Ano: 2012
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Determination of oil in contamined soil by low-field nuclear magnetic resonance (NMR). Repositório Alice
NOVOTNY, E. H.; REBELLO, C. M.; TAVARES, S. R. de L..
The present work proposes a new methodology for the quantification of oil in soil using low field Nuclear Magnetic Resonance (NMR).
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Relaxometria; Contaminação; Óleo; Petróleo; Petroleum.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115134
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Economic Contribution of the Petroleum Industry to North Dakota AgEcon
Bangsund, Dean A.; Leistritz, F. Larry.
The purpose of this study was to estimate the economic contribution of crude oil and natural gas exploration, extraction, transportation, and processing in North Dakota in 2005. Primary data for the study came from three separate surveys of firms involved with various aspects of the petroleum industry. Exploration, the process of finding mineral resources, was estimated to have direct impacts (in-state expenditures) of $445.1 million. Extraction, the process of developing and recovering mineral resources, had direct impacts of $909.6 million. The processing sector of the industry, which included pipeline transportation of crude oil and natural gas, had $132 million in direct impacts. The North Dakota Input-Output Model was used to estimate the...
Tipo: Report Palavras-chave: Petroleum; North Dakota; Economic impact; Employment; Tax revenues; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/7642
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Economic Contribution of the Petroleum Industry to North Dakota AgEcon
Bangsund, Dean A.; Leistritz, F. Larry.
The purpose of this study was to estimate the economic contribution of crude oil and natural gas exploration, extraction, transportation, and processing in North Dakota in 2005. Primary data for the study came from three separate surveys of firms involved with various aspects of the petroleum industry. Exploration, the process of finding mineral resources, was estimated to have direct impacts (in-state expenditures) of $445.1 million. Extraction, the process of developing and recovering mineral resources, had direct impacts of $909.6 million. The processing sector of the industry, which included pipeline transportation of crude oil and natural gas, had $132 million in direct impacts. The North Dakota Input-Output Model was used to estimate the...
Tipo: Report Palavras-chave: Petroleum; North Dakota; Economic impact; Employment; Tax revenues; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/7635
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Effect of nickel in the degradation of oil in soils contaminated with petroleum and nickel. Repositório Alice
TAKETANI, N. F.; TAKETANI, R. G.; LEITE, S. G. F.; MELO, I. S. de; LIMA-RIZZO, A. C.; ANDREOTE, F. D.; CUNHA, C. D. da.
Abstract: The pollution originated from the petrochemical industry is currently one of the main environmental concerns. Most of this is due to the high volume of toxic hydrocarbons that are produced and transported around the globe. However, this industry is also associated with toxic metals that are minor components of petroleum and used during refining processes. Here we have evaluated the impact of nickel in the biodegradation of crude oil in natural soils. We have assessed bacterial community profiles in these samples using ion torrent 16S rRNA gene sequencing and Real-Time PCR quantification and shotgun metagenome sequencing. We have found that the contamination with oil and nickel reduced the bacterial abundance compared with only soil. There was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Metagenome; Metal contamination; Hydrocarbon remediation; Contaminação; Poluição do Solo; Petróleo; Níquel; Bactéria; Metagenomics; Soil pollution; Petroleum; Actinobacteria; Decontamination.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125486
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Effects of Increased Biofuels on the U.S. Economy in 2022 AgEcon
Gehlhar, Mark J.; Somwaru, Agapi; Somwaru, Agapi.
Achieving greater energy security by reducing dependence on foreign petroleum is a goal of U.S. energy policy. The Energy Independence and Security Act of 2007 (EISA) calls for a Renewable Fuel Standard (RFS-2), which mandates that the United States increase the volume of biofuel that is blended into transportation fuel from 9 billion gallons in 2008 to 36 billion gallons by 2022. Long-term technological advances are needed to meet this mandate. This report examines how meeting the RFS-2 would affect various key components of the U.S. economy. If biofuel production advances with cost-reducing technology and petroleum prices continue to rise as projected, the RFS-2 could provide economywide benefits. However, the actual level of benefits (or costs) to the...
Tipo: Report Palavras-chave: Bioenergy; Economywide; Ethanol; Petroleum; Trade; Macroeconomic factors; RFS-2; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/96758
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Impact d'un lubrifiant minéral sur la structure trophique des peupelements de nématodes libres marins de la lagune de Ghar El Melh : Etude microcosmique OceanDocs
Aissa, P.; Soltani, A.; Mahmoudi, E.; Louati, H.; Beyrem, H..
Une étude microcosmique a été effectuée pour examiner l’influence d’un lubrifiant minéral avant et après son utilisation dans un moteur de véhicule sur la structure trophique de la communauté de nématodes libres originaire de la lagune de Ghar El Melh. Une concentration de 1mg kg-1 de sédiment a été testée pour évaluer l’effet du polluant après 40 jours d’exposition. Les résultats de l’étude ont révélé que les consommateurs non sélectifs (1B), les plus abondants dans le microcosme témoin, ont été très affectés et leur dominance a diminué significativement sous l’effet de la contamination par le lubrifiant minéral avant ou après usage. Les détritivores sélectifs (1A) dont la dominance augmente significativement au iveau des microcosmes traités avec le...
Tipo: Journal Contribution Palavras-chave: Microcosms; Oil pollution; Petroleum; Pollution effects; Sediments; Trophic structure.
Ano: 2008 URL: http://hdl.handle.net/1834/4255
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Impact d’un lubrifiant minéral sur la structure trophique des peuplements de nématodes libres marins de la lagune de Ghar el Melh: Etude microcosmique OceanDocs
Louati, H.; Soltani, A.; Beyrem, H.; Aissa, P.; Mahmoudi, E..
Une étude microcosmique a été effectuée pour examiner l’influence d’un lubrifiant minéral avant et après son utilisation dans un moteur de véhicule sur la structure trophique de la communauté de nématodes libres originaire de la lagune de Ghar El Melh. Une concentration de 1mg kg-1 de sédiment a été testée pour évaluer l’effet du polluant après 40 jours d’exposition. Les résultats de l’étude ont révélé que les consommateurs non sélectifs (1B), les plus abondants dans le microcosme témoin, ont été très affectés et leur dominance a diminué significativement sous l’effet de la contamination par le lubrifiant minéral avant ou après usage. Les détritivores sélectifs (1A) dont la dominance augmente significativement au iveau des microcosmes traités avec le...
Tipo: Journal Contribution Palavras-chave: Microcosms; Oil pollution; Petroleum; Pollution effects; Sediments; Trophic structure; Petroleum; Http://aims.fao.org/aos/agrovoc/c_5747.
Ano: 2008 URL: http://hdl.handle.net/1834/3754
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Influence of nickel in petroleum biodegradation: a metagenomics approach. Repositório Alice
TAKETANI, N.; TAKETANI, R. G.; MELO, I. S. de; RIZZO, A. C. L.; SORIANO, A. U.; LEITE, S. G. F.; CUNHA, C. D..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Petróleo; Biodegradação; Niquel; Nickel; Petroleum; Biodegradation.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1010890
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Les pollutions marines accidentelles. Au-delà du pétrole brut, les produits chimiques et autres déversements en mer ArchiMer
Marchand, Michel.
At every new marine pollution the same interrogations : to take action and in which way? What could be the consequences? At first, to know the behaviour of pollutants, hydrocarbon or chemicals. But the improvement of knowledges or expert appraisement will not be sufficient with regards to a liberal logic which is not interested in maritime safety.
Tipo: Text Palavras-chave: Inervention; Chemicals; Petroleum; Accidental pollution; Marine pollution; Produit chimique; Hydrocarbure; Petrole brut; Pollution accidentelle; Pollution marine.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-1008.pdf
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Parecer sobre utilização de imagem de satélite para prospecção de óleo no município de Pendências-RN. Infoteca-e
RICHÉ, G. R..
A formação Jandaira dá origem a Vertissolos Grumossólicos Carbonaticos, solos de cor bruno escura, de textura pesada, percorridos por fendas extensas e profundas.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Prospecção; Imagem; Rio Grande do Norte.; Petróleo; Satélite; Satellites.; Petroleum.
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132704
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Prediction of Petroleum Prospect in the South Yellow Sea Basin Using Satellite Remote Sensing. OceanDocs
Gong, Jianming; Chen, Jianwen; Liang, Jie; Zhang, Zhixun; Liu, Chuang; Lu, Zhenquan; Huang, Fulin.
Using satellite remote sensing to measure the sea surface temperature of the East China Sea Shelf Basin can serve the purpose of predicting the petroleum prospect in the South Yellow Sea Basin. The satellite thermal infrared temperature anomaly area always repeats in the same position as the proved oil prospect area in the East China Sea Shelf Basin, and coincides well with both the CH4 content curve at the water-atmosphere interface and the seafloor geochemical anomaly. The sea surface temperature anomaly areas of the South Yellow Sea Basin in the satellite remote sensing image go banded along 123?30? in the S-N direction, and naturally follow the aeromagnetically interpreted eastern nose-type uplift that shows a S-N strike. The north and south ends of...
Tipo: Journal Contribution Palavras-chave: Remote satellite sensing; Petroleum; Prediction.
Ano: 2007 URL: http://hdl.handle.net/1834/5865
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Protists and bacteria interactions in the presence of oil Anais da ABC (AABC)
BITENCOURT,JOSÉ A.P.; SILVA,FREDERICO SOBRINHO; SILVA-NETO,INÁCIO D. DA; CRAPEZ,MIRIAN A.C..
Little is known about the role of protists and bacteria interactions during hydrocarbon biodegradation. This work focused on the effect of oil on protists from three different locations in Guanabara Bay and bacteria from Caulerpa racemosa (BCr), Dictyota menstrualis (BDm) and Laurencia obtusa (BLo) during a 96 h bioassay. Cryptomonadida (site 1, 2 and 3), Scuticociliatida (site 2) and Euplotes sp.1 and Euplotes sp.2 (site 3) appeared after incubation. The highest biomass observed in the controls was as follows: protist site 3 (6.0 µgC.cm–3, 96 h) compared to site 3 with oil (0.7 µgC.cm–3, 96 h); for bacteria, 8.6 µgC.cm–3(BDm, 72 h) and 17.0 µgC.cm–3(BCr with oil, 24 h). After treatment, the highest biomasses were as follows: protists at site 1 and BLo,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial consortia; Biomass; Free living protist; Guanabara Bay; Microbial loop; Petroleum.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200745
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