Microorganisms in Flotation and Flocculation of Minerals-An Overview
Microorganisms have a tremendous influence on their environment through the transfer of energy,charge, and materials across a complex biotic mineral-solution interface. Recent developments in biotechnology have not only aided hydrometallurgical leaching operations but also shown great promise in mineral beneficiation processes. The adhesion of bacteria on minerals alters the surface properties relevant to flotation and flocculation of minerals. The biomodification of mineral surfaces occurs through the attachment of microbial cells, oxidation reactions and adsorption or chemical reaction with the metabolite products. Several types of heterotrophic and chemolithotrophic bacteria have been successfully applied in flotation and flocculation processes for the last two decades. Although the potential of microorganisms in minerals beneficiation has been realised by several researchers from their laboratory investigations, the studies were mostly confined to pure mineral systems and there is hardly any sincere effort to apply the methodologies on ores. This paper presents a brief summary of the literature in bioflotation and bioflocculation, and attempts to outline new dimensions of research for a practicable application of this technology in mineral industry.
Microorganisms Bacterial adhesion Biobeneficiation Bioflotation Bioflocculation Sulfide minerals Oxide minerals
A.Vilinska K. Hanumantha Rao K.S.E. Forssberg
Division of Mineral Processing, Lule(a) University of Technology, Lule(a),Sweden
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
22-39
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）