Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados BJM (2) Autor Almeida,Narcisa Furtado de (1) Bento,Fatima Menezes (1) Camargo,Flávio Anastácio de Oliveira (1) Frankenberger-Júnior,Willian Thomas (1) Leite,Selma Gomes Ferreira (1) Martins,Paula Salles de Oliveira (1) Okeke,Benedict (1) Mais... Palavra-chave Natural attenuation (2) Bioagmentation (1) Biostimulation (1) Co-contamination (1) EPS (1) Heavy metals (1) Total petroleum hydrocarbon (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (1) 2003 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Application of a bacterial extracellular polymeric substance in heavy metal adsorption in a co-contaminated aqueous system BJM Martins,Paula Salles de Oliveira; Almeida,Narcisa Furtado de; Leite,Selma Gomes Ferreira. The application of a bacterial extracellular polymeric substance (EPS) in the bioremediation of heavy metals (Cd, Zn and Cu) by a microbial consortium in a hydrocarbon co-contaminated aqueous system was studied. At the low concentrations used in this work (1.00 ppm of each metal), it was not observed an inhibitory effect on the cellular growing. In the other hand, the application of the EPS lead to a lower concentration of the free heavy metals in solution, once a great part of them is adsorbed in the polymeric matrix (87.12% of Cd; 19.82% of Zn; and 37.64% of Cu), when compared to what is adsorbed or internalized by biomass (5.35% of Cd; 47.35% of Zn; and 24.93% of Cu). It was noted an increase of 24% in the consumption of ethylbenzene, among the gasoline... Tipo: Info:eu-repo/semantics/article Palavras-chave: EPS; Co-contamination; Heavy metals; Natural attenuation. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400034 Bioremediation of soil contaminated by diesel oil BJM Bento,Fatima Menezes; Camargo,Flávio Anastácio de Oliveira; Okeke,Benedict; Frankenberger-Júnior,Willian Thomas. Were evaluated natural attenuation, biostimulation and bioaugmentation on the degradation of total petroleum hydrocarbons (TPH) in soils contaminated with diesel oil. Bioaugmentation showed the greatest degradation in the light (C12 - C23) fractions (72.7%) and heavy (C23 - C40) fractions of TPH (75.2%) and natural attenuation was more effective than biostimulation. The greatest dehydrogenase activity was observed upon bioaugmentation of the Long Beach soil (3.3-fold) and the natural attenuation of the Hong Kong soil sample (4.0-fold). The number of diesel oil degrading microorganisms and heterotrophic population was not influenced by the bioremediation treatments. The best approach for bioremediation of soil contaminated with diesel oil is the inoculum of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural attenuation; Bioagmentation; Biostimulation; Total petroleum hydrocarbon. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500022 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco