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thiobacillus-ferrooxidans
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Biodesulfurization of the tabas deposit coal by microorganisms
, Article Journal of Mining Science ; Volume 40, Issue 3 , 2004 , Pages 310-320 ; 10627391 (ISSN) ; Rezai, B ; Vossoughi, M ; Osanloo, M ; Sharif University of Technology
2004
Abstract
The results are presented for the investigations of sulfur removal from coal by a mixed culture of microorganisms. Optimal conditions of the process are established (pH, size of coal particles, pulp density, temperature, etc.). They make it possible to reduce the content of pyrite and total sulfur by 91.84 and 53.5%, respectively. The decrease in ash content of coal under its leaching is noted. © 2004 Springer Science+Business Media, Inc
Biorecovery of heavy metals from oil waste water by adapted Thiobacillus Ferrooxidans
, M.Sc. Thesis Sharif University of Technology ; Yaghmaei, Soheila (Supervisor)
Abstract
Acidophilic microorganisms such as Thiobacillus ferrooxidans have the capability to carry out process of biorecovery of heavy metals. Its principle is the microbial production of the sulphuric acid and simultaneous recovery of metals. Acidithiobacillus ferrooxidans derives the energy for their metabolism from ferrous iron oxidation process which can be affected by the presence of heavy metals in the medium. In this study the ability of Acidithiobacillus ferrooxidans, on the biorecovery of heavy metals in shake flask has been investigated The adaptation of the Acidithiobacillus ferrooxidans to a kind of heavy metal such as Nickel, Cobalt, Vanadium, Molybdenum, Tungsten and the mixture of the...
Some investigations on the ability of an indigenous thiobacillus ferrooxidans, used in Bio-SR process
, Article CHISA 2006 - 17th International Congress of Chemical and Process Engineering, Prague, 27 August 2006 through 31 August 2006 ; 2006 ; 8086059456 (ISBN); 9788086059457 (ISBN) ; Salimi, F ; Mousavi, S. M ; Sharif University of Technology
2006
Abstract
The physicochemical techniques presently available for treatment of H2S containing gases are many and varied. In near future small gas reservoirs with high concentration of H2S will be explored, therefore the gas processing industry is seeking novel, cost effective, environmentally compatible and operator friendly technologies applicable to the small volume producrs. The continuing search for more economical methods has led to investigations into microbiological processes. The biological process which has been studied in this research is Bio-SR process. Bio-SR process uses thiobacillus ferroxidans bacteria to regenerate gas treating solution (ferrous sulfate). In this way, the effects of...
Bioleaching of Metal from Electronic Wastes Using Acidithiobacillus Ferrooxidans
, M.Sc. Thesis Sharif University of Technology ; Yaghmaei, Soheila (Supervisor)
Abstract
The recycling of the secondary resources for the extraction of their metallic contents is undoubtedly environmentally friendly and can be economic. One of the most important secondary resources is the electronic wastes (E-wastes) which has been widely produced as the discarded electrical/electronic devices. The usual physical/chemical treatments of E-wastes not only result in an increase in human health risks and environmental pollution but also lead to the missing of their valuable metallic contents. An alternative method for the recycling of E-wastes is bioleaching which has recently attracted more attention. The advantages of this process are low energy consumption and environment...
Experimental Investigation and Modeling of Ferrous Biooxidation in a Monolithic Bioreactor
, Ph.D. Dissertation Sharif University of Technology ; Vossoughi, Manoochehr (Supervisor) ; Alemzadeh, Iran (Supervisor)
Abstract
The bio-oxidation of ferrous iron is a potential industrial process in the regeneration of ferric iron and the removal of H2S in combustible gases. Bio-oxidation of ferrous iron may be an alternative method of producing ferric sulfate, which is a reagent used for removal of H2S from biogas, tail gas and pulp and paper industry. For practical use of this process, this study evaluated the optimal pH and initial ferric concentration. pH control looks like a key factor as it acts both on growth rate and on solubility of materials in the system. Some process variables such as pH and amount of initial ferrous ions on oxidation by A. ferrooxidans and the effects of such process variables dilution...