2007
DOI: 10.1016/j.jhazmat.2007.01.005
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Bioleaching of chromium from tannery sludge by indigenous Acidithiobacillus thiooxidans

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Cited by 69 publications
(20 citation statements)
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“…Inoculum concentration and agitation rate are the two decisive parameters in the culture and the production of bioacid by A. thiooxidans cultured in a stirred-tank reactor with elemental sulphur as the energy source [31]. For this reason, a preliminary study was carried out in order to select suitable conditions to generate bioacid to be employed as a leaching agent.…”
Section: A Thiooxidans Culturementioning
confidence: 99%
“…Inoculum concentration and agitation rate are the two decisive parameters in the culture and the production of bioacid by A. thiooxidans cultured in a stirred-tank reactor with elemental sulphur as the energy source [31]. For this reason, a preliminary study was carried out in order to select suitable conditions to generate bioacid to be employed as a leaching agent.…”
Section: A Thiooxidans Culturementioning
confidence: 99%
“…El potencial aplicativo de los microorganismos como agentes biolixiviadores (removedores de metales), puede usarse para promover la reducción de Cr +6 (Okeke 2008) y la biolixiviación de Cr +3 (Fang et al 2007, Wang et al 2007, tanto por la habilidad de los procesos enzimáticos directamente involucrados como por la producción de metabolitos altamente reductores, que contribuyen a 1 Comunicación personal. Departamento de Gestión ambiental.…”
Section: Biorremediación Para La Remocion De Cromounclassified
“…Se han reportado un buen número de estudios en los que microorganismos nativos de sitios contaminados con cromo muestran resistencia a este ión, debido a que poseen mecanismos activos o pasivos que les permiten removerlo o destoxificarlo. En ciertas especies se ha identificado la capacidad de remover el cromo por mecanismos de reducción tanto aerobia como anaerobia (Cheung & Gu 2003, Lee et al 2006, Wang et al 2007, Okeke 2008, Yang et al 2009, Zahoor & Rehman 2009 et al 2006), se reportó la capacidad de tolerar el cromato y reducirlo mediante la actividad de una reductasa, combinada con un mecanismo de expulsión de cromo, estas características la hacen muy útil en biorremediación de ambientes contaminados con cromo. Camargo et al (2004), evaluaron otra especie de Bacillus sp.…”
Section: Biorremediación Para La Remocion De Cromounclassified
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“…Hexavalent chromium is one of the technogenic pollutants of the environment and occurs mainly as a result of human activities through production of waste water in metal smelting, electroplating, tanning, metallurgy and dyestuff industries [1,2]. The toxicity of chromium to living organisms is well established and considerable interest exists in the determination of this metal in environmental samples at trace levels.…”
Section: Introductionmentioning
confidence: 99%