Adhesion to metal sulfide surfaces by cells of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans

Harneit, Kerstin; Göksel, A.; Kock, Dagmar; Klock, Jan-Hendrik; Gehrke, T.; Sand, Wolfgang

doi:10.1016/j.hydromet.2006.03.044

Cited by 231 publications

(158 citation statements)

References 34 publications

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“…The adherence of A. ferrooxidans cells is higher to pyrite compared with chalcopyrite. As previously reported [26], there are differences between the adhesion ability of different strains of the same acidophilic species toward pyrite and other sulphide minerals. The results in literature generally showed higher cells adhesion onto pyrite [26,27].…”

Section: Adsorption Studiessupporting

confidence: 69%

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Vilinska¹,

Rao²

2009

TOCOLLSJ

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Abstract:The adhesion of Acidithiobacillus ferrooxidans bacterial cells have been assessed by following the thermodynamic and extended DLVO theoretical approaches. Surface potential, interfacial tension and contact angle parameters that are necessary for the calculation of free energy of adhesion have been determined experimentally. The Hamaker constant involved in the Lifshitz-van der Waals interaction energy has been estimated by microscopic and macroscopic methods.The free energy of adhesion found to be negative on pyrite and chalcopyrite minerals indicating the adsorption of bacterial cells on these minerals. The potential energy diagrams of total interaction energy versus separation distance curves also illustrate the feasibility of bacterial cells adhesion except in a pH region where the bacterial species and minerals possess similar surface charge with high magnitude. The present theoretical analysis of bacterial adhesion on mineral surfaces found to be in good agreement with the experimental results and previous findings in the literature. Thus, the bacterial adhesion behavior on minerals can be judged and explained by considering the physico-chemical interaction forces.

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Section: Adsorption Studiessupporting

confidence: 69%

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Vilinska¹,

Rao²

2009

TOCOLLSJ

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“…The most well-known and first identified bio-leaching bacteria are Acidithiobacillus ferrooxidans, Leptospirillum ferrooxidans, Acidithiobacillus thiooxidans and Thiobacillus thiooxidans (Harneit et al, 2006;Lei et al, 2007). …”

Section: Bacteriamentioning

confidence: 99%

Microbiological Leaching; an Environmentally Friendly and Cost Effective Method for Extraction of Metals

Hasab

Khoshnood

2018

Transylvanian Review of Systematical and Ecological Research

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Finding a cleaner, environmentally friendly and cost-effective way of metal and mineral extraction has a great importance in today's world. Using microorganisms in bioleaching and bio-oxidation process is of great value. From Archaea to bacteria and fungi, microorganisms can play an important role in extraction of metals from mine drainage and unaccessible sources, both in aquatic and terrestrial environments. Optimization of environmental factors such as the temperature, pH and substrate concentration is crucially important to access the optimum extraction of selected metals from an ore or mine drainage. The present paper will review the bio-leaching and bio-oxidation process of minerals with emphasis on the most wellknown species of bacterial communities of such ability, through the literature.RESUMEN: La lixiviation microbiologique; une méthode écologique et rentable pour l'extraction des métaux.Trouver une façon plus propre, respectueuse de l'environnement et économique de l'extraction des métaux et des minéraux est d'une grande importance dans le monde d'aujourd'hui. L'utilisation de microorganismes dans le processus de bio-lixiviation et de biooxydation est d'une grande valeur. De l'Archaea aux bactéries et aux champignons, les microorganismes peuvent jouer un rôle important dans l'extraction des métaux du drainage des mines et des sources non accessibles, tant dans les milieux aquatiques que terrestres. L'optimisation des facteurs environnementaux tels que la température, le pH et la concentration du substrat est cruciale pour accéder à l'extraction optimale des métaux sélectionnés à partir d'un minerai ou d'un drainage minier. Le présent document examinera le processus de bio-lixiviation et de bio-oxydation des minéraux, en mettant l'accent sur les espèces les plus connues de communautés bactériennes de cette capacité, à travers la littérature.REZUMAT: Lixivierea microbiologică; o metodă ieftină și ecologică de extragere a metalelor.În contextul internațional actual, găsirea unei metode mai ecologice, mai puțin poluante și ieftine de extragere a metalelor și minereurilor este de mare importanță. O deosebită valoare este reprezentată de utilizarea microorganismelor în procese bio-oxidative și de bio-lixiviere. De la Archaea la bacterii și fungi, microorganismele pot juca un rol important în extragerea metalelor din apele de mină și din surse inaccesibile atât în mediu terestru cât și acvatic. Optimizarea factorilor ambientali precum temperatura, pH-ul și concentrația substratului sunt cruciale pentru o extragere optimă a metalelor selecționate din zăcământ sau din apele de mină. Articolul de față trece în revistă procesele de extragere a mineralelor prin bio-oxidare și bio-lixiviere, evidențiind cele mai bine cunoscute specii din comunitățile bacteriene cu astfel de abilități, așa cum sunt ele prezentate în literatura de specialitate.

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“…El tamaño de los pits fue asociado con el incremento en la velocidad de disolución del mineral. Harneit et al (2006) observaron la ubicación preferencial de A. ferrooxidans sobre una superficie mineral con defectos visibles y atribuyeron este comportamiento a una mayor viabilidad de azufre y de Fe(II).…”

Section: Mecanismos De Oxidación Bacteriana Para La Arsenopiritaunclassified

Aplicaciones biotecnológicas en minería aurífera: Estado del arte sobre la oxidación bacteriana de arsenopirita (FeAsS)

et al. 2011

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ResumenEn el mundo, grandes cantidades de sulfuros provenientes de la explotación minera con características refractarias y/o con iones, en su estructura cristalina, nocivos al medio ambiente y a la salud humana, han sido acumulados en el tiempo. Dichos sulfuros presentan contenidos de oro relevantes en la mayoría de los casos, el tratamiento de estos materiales no es factible por métodos convencionales, lo cual incrementa el costo de la recuperación de los valores metálicos presentes. Es así como, en las últimas décadas, la bio-hidrometalurgia, se ha convertido en una tecnología comercialmente viable para la extracción de metales preciosos. Además, es bien conocida por su utilización en la bio-remediación de drenajes ácidos, remoción de metales pesados presentes en áreas mineras, suelos y sedimentos contaminados, residuos industriales como cenizas de incineración; degradación de cianuro, adecuación de concentrados para separación por flotación espumante, biodesulfurización de carbones, entre otras. En este trabajo se presenta el principio fundamental de la oxidación bacteriana de la arsenopirita, así como un esbozo acerca de los mecanismos y diferentes susceptibilidades que muestra frente a la oxidación biológica.Palabras clave: Biominería, biooxidación, biolixiviación, arsénico, Acidithiobacillus ferrooxidans. AbstractThroughout the world, great quantities of sulfides from mining practices have accumulated over time.These have refractory characteristics y/or ions, in their crystalline structure, which are harmful to the environment y to human health. Said sulfides present relevant gold contents in most instances; treatment of these materials is not feasible through conventional methods, increasing the cost of recovery of the metallic values present. This is how in recent decades bio-hydrometallurgy has become a commercially viable technology for the extraction of precious metals. Additionally, it is well known for its use in the bio-remediation of acid drainage, removal of heavy metals present in mining areas, contaminated soils y sediments, industrial residues like incineration ash; cyanide degradation, adaptation of concentrates for foam separation, coal biodesulfurization, among others. This work presents the fundamental principle of bacterial oxidation of arsenopyrite, as well as an outline about the Aplicaciones biotecnológicas en minería aurífera: Estado del arte sobre la oxidación bacteriana de arsenopirita (FeAsS)

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Adhesion to metal sulfide surfaces by cells of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans

Cited by 231 publications

References 34 publications

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Microbiological Leaching; an Environmentally Friendly and Cost Effective Method for Extraction of Metals

Aplicaciones biotecnológicas en minería aurífera: Estado del arte sobre la oxidación bacteriana de arsenopirita (FeAsS)

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