Continuous culture ofThiobacillus ferrooxidans on a zinc sulfide concentrate
نویسندگان
چکیده
منابع مشابه
Dielectric Properties of Zinc Sulfide Concentrate during the Roasting at Microwave Frequencies
Microwave technology has a potential application in the extraction of zinc from sulphide ores, knowledge of the dielectric properties of these ores plays a major role in the microwave design and simulation for any process. The dielectric properties of zinc sulfide concentrate for two different apparent densities—1.54 and 1.63 g/cm3—have been measured by using the resonance cavity perturbation t...
متن کاملEvaluation of Toxic and Teratogenic Effects of Zinc Sulfide (Zns) Nanoparticles on Chicken Embryos and Fibroblastic Cells Culture
Aims: Nanoparticles (particles with a diameter of 10-500 nm) are currently used in the cosmetics industry, as well as for pharmaceuticals, diagnostic imaging and tissue engineering. Since these nanoparticles are used in industry and drug delivery, it can also be used by pregnant mothers. Hence, the aim of the present study was to investigate the teratogenic and cytotoxic effects of Zinc sulfide...
متن کاملDirect sulfide oxidation in the solubilization of sulfide ores by Thiobacillus ferrooxidans.
The increased rate of solubilization of sulfide ores of iron and copper caused by Thiobacillus ferrooxidans has been attributed either to direct action of the bacteria on the ore or to an indirect effect whereby the ferric ion is presumed to oxidize the ore and is returned to the active, oxidized state by the iron-oxidizing bacteria. Attempts by M. P. Silverman (3) to demonstrate that microbial...
متن کاملKINETIC STUDIES FOR GOLD LEACHING OF A REFRACTORY SULFIDE CONCENTRATE BY CHLORIDE–HYPOCHLORITE SOLUTION
In this paper, gold leaching of a refractory sulfide concentrate by chloride–hypochlorite solution was investigated and effects of stirring speed, temperature and particle size on the leaching rate were reported. Experimental data for leaching rate of gold were analyzed with the shrinking–core model. Results were consistent with chemical reaction control mechanism in the first 1 h of leachin...
متن کاملReduction of arsenic content in a complex galena concentrate by Acidithiobacillus ferrooxidans
BACKGROUND Bioleaching is a process that has been used in the past in mineral pretreatment of refractory sulfides, mainly in the gold, copper and uranium benefit. This technology has been proved to be cheaper, more efficient and environmentally friendly than roasting and high pressure moisture heating processes. So far the most studied microorganism in bioleaching is Acidithiobacillus ferrooxid...
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ژورنال
عنوان ژورنال: Biotechnology and Bioengineering
سال: 1975
ISSN: 0006-3592,1097-0290
DOI: 10.1002/bit.260170612