Cement Composites Biodeterioration by Acidithiobacillus Thiooxidans
WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENTThe focus of this work was to study the biodeterioration of special cement composites by sulfur-oxidizing bacteria Acidithiobacillus thiooxidans. The laboratory prepared cement composites that contained the selected additives - silica fume (a secondary raw material) and zeolite (a natural raw material), as partial replacements for the binder. The tests
Alena Luptakova +2 more
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Statistical and kinetic study for leaching of covellite in a chloride media [PDF]
, 2019 Covellite is a relatively rare copper sulfide with slow dissolution kinetics. The present investigation used the surface optimization methodology to evaluate the effect of three independent variables (time, chloride concentration and sulfuric acid ...
Briceño Romero, Williams +5 more
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Interrelationship of hydrology, microbial colonisation and hydrometallurgy in a simulated chalcopyrite heap leach [PDF]
, 2008 Includes bibliographical references (leaves 104-115).Chalcopyrite is the most abundant primary copper sulphide mineral found worldwide. As copper grades of ores available for extraction decrease, heap bioleaching is gaining interest as a potential ...
Spurr, Nicholas Robert Louis
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Dyna, 2016 Se evaluaron tres fuentes de hierro (FeSO4, Fe2(SO4)3 y FeCl3) a diferentes concentraciones (150, 700 y 1250 mg Fe/L) en procesos de biodesulfurización de un carbón con tamaño de partícula grueso, utilizando un consorcio de Acidithiobacillus ferrooxidans
Gerardo Andrés Caicedo Pineda +1 more
doaj +1 more source
Biolixiviación de hierro y zinc de un residuo de acero galvanizado de la industria automotriz utilizando Acidithiobacillus thiooxidans: un caso de estudio en la zona del bajío en México [PDF]
, 2023 La biohidrometalurgia se ha definido como un conjunto de técnicas que implican el uso de metabolismos microbianos, como la bacteria Acidithiobacillus thiooxidans , para la extracción de metales. Por lo tanto, en el presente estudio, probamos el potencial
Aguilar-Molina, Vivian Hayde +6 more
core +1 more source
Efecto de la cisteína en un proceso de biodepiritización de carbones en lecho empacado
Revista Colombiana de Biotecnología, 2016 Se llevaron a cabo procesos de biodesulfurización de dos carbones colombianos ricos en azufre (“Mina Vieja” y “Vampiro”), en reactores de lecho empacado a nivel de erlenmeyer, utilizando un consorcio de Acidithiobacillus ferrooxidans (ATCC 23270) y ...
Gerardo Andrés Caicedo Pineda +1 more
doaj +1 more source
Investigation of the Precipitates on the Concrete Surface due to Sulphate Exposure
Selected Scientific Papers: Journal of Civil Engineering, 2016 The aim of this study is to investigate the durability of cement-based materials subjected to the effects of sulphuric acid in terms of surface deterioration.
Kovalčíková Martina +3 more
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Biological-Chemical Oxidation of Ore Minerals at Pezinok Deposit [PDF]
, 2004 The article presents results of leaching experiments of the comparison between chemical and biological-chemical leaching, at the same conditions in solution, of ores from the Sb-(Au-) base metal deposit Pezinok (Malé Karpaty Mts., Western Carpathians ...
Andrea Šlesárová +5 more
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Bioleaching of copper from electronic scrap [PDF]
O presente trabalho investigou a influência da suplementação de ferro e da adaptação bacteriana sobre a biolixiviação de cobre de placas de circuito impresso usando a bactéria Acidithiobacillusferrooxidans-LR.
ESPINOSA, Denise Crocce Romano +2 more
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Chemical attributes of an Argisoil of the Vale do São Francisco after melon growth with phosphate and potash rocks biofertilizers. [PDF]
, 2016 A aplicação de fertilizantes pode promover mudanças na reação do solo e na disponibilidade de nutrientes importantes para as plantas. A produção de biofertilizantes a partir de rochas é um processo prático que reduz o consumo de energia e aumenta a ...
DUENHAS, L. H. +5 more
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