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	Provedor de dados BJM (4) Autor Leite,Selma Gomes Ferreira (4) Almeida,Narcisa Furtado de (1) Aniszewski,Erick (1) Cunha,Cláudia Duarte da (1) Fiaux,Sorele Batista (1) Martins,Paula Salles de Oliveira (1) Mota,Fábio Faria (1) Peixoto,Raquel Silva (1) Ramos,Aline de Souza (1) Rosado,Alexandre Soares (1) Mais... Palavra-chave Bioremediation (2) Heavy metals (2) 6-pentyl-α-pyrone (1) Biodegradation (1) Biosemulsifier (1) Cadmium (1) Co-contamination (1) EPS (1) Experimental design (1) Gasoline (1) Microbacterium (1) Natural attenuation (1) Soil (1) Solid-state fermentation (1) Zinc (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2010 (1) 2008 (2) 2000 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 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 Bioemulsifier production by Microbacterium sp. strains isolated from mangrove and their application to remove cadmiun and zinc from hazardous industrial residue BJM Aniszewski,Erick; Peixoto,Raquel Silva; Mota,Fábio Faria; Leite,Selma Gomes Ferreira; Rosado,Alexandre Soares. The contamination of ecosystems with heavy metals is an important issue in current world and remediation technologies should be in according to environmental sustainability concept. Bioemulsifier are promising agents to be used in metal removal and could be effective to many applications in environmental industries. The aims of this work was screening the potential production of bioemulsifier by microorganisms isolated from an oil contaminated mangrove, and evaluate cadmium and zinc removal potential of those strains from a hazardous industrial residue. From that, bioemulsifier-producing bacteria were isolated from urban mangrove sediments. Four isolates were identified as Microbacterium sp by 16S rRNA analysis and were able to reduce up to 53.3% of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosemulsifier; Heavy metals; Zinc; Cadmium; Microbacterium; Bioremediation. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100033 Gasoline biodegradation in different soil microcosms BJM Cunha,Cláudia Duarte da; Leite,Selma Gomes Ferreira. The objective of this study was to evaluate gasoline biodegradation in batch soil microcosms. Microorganisms able to grow in the presence of gasoline were isolated from soil. Several treatment systems were performed using both isolated strains and Pseudomonas putida obtained from a culture collection. The treatment system using only autochthonous microflora (system 1) presented an average value of degradation of 50%. The association of Pseudomonas putida, Burkholderia cepacia, Pseudomonas alcaligenes and the native soil microflora (system 13) presented significant percentage of removal of n-undecane (88.7), n-dodecane (61.3) and n-tridecane (66.7). According to these results, systems 1 and 13 revealed considerable potential for application in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Gasoline; Soil; Biodegradation. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100011 Production of 6-pentyl-α-pyrone by trichoderma harzianum in solid-state fermentation BJM Ramos,Aline de Souza; Fiaux,Sorele Batista; Leite,Selma Gomes Ferreira. Many Trichoderma species are able to produce 6-pentyl-α-pyrone (6-PP), a lactone with coconut-like aroma. In the present work, several culture parameters were studied to enhance the production of 6-PP by Trichoderma harzianum 4040 in solid-state fermentation. Green coir powder added to a nutrient solution was used as support material for fermentation. A Plackett-Burman screening technique was applied, followed by a fractionary factorial design. The best culture conditions within the experimental domain studied were (100 g support)-1: sucrose, 3 g; NaNO3, 0.24 g; (NH4)2SO4, 0.18 g; KH2PO4, 0.1 g; inoculum concentration, 2.2 x 10(6) spores; moisture level, 55%. The temperature established was 28ºC. The fermentation under the selected conditions led to a 6-PP... Tipo: Info:eu-repo/semantics/article Palavras-chave: 6-pentyl-α-pyrone; Solid-state fermentation; Experimental design. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400022 Registros recuperados: 4 Primeira ... 1 ... Última

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