Bioleaching of a Molybdenite Concentrate by Thermophilic Microorganisms in a New RELVA-RBAL 1 AIR LIFT Bio-Reactor

R.E. Rivera Santillan; F. Patricio Ramirez; F.A. Lopez Lopez

doi:10.4028/www.scientific.net/AMR.1130.300

Paper Titles

Evolution of Leaching Products on the Surface of Chalcopyrite by Mesophiles and Thermophiles Based on SR-XRD and XANES Spectroscopy
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Iron Oxidized Acidophiles Distribution and Activities in an Uranium In Situ Bioleaching Site
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Solution pH and Jarosite Management during Ferrous Iron Biooxidation in a Novel Packed-Column Bioreactor
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Metal Recovery and Exploitation of Lignite Ashes by Combined Physicochemical and Biotechnological Approaches
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Bioleaching of a Molybdenite Concentrate by Thermophilic Microorganisms in a New RELVA-RBAL 1 AIR LIFT Bio-Reactor
p.300

Physical Peeling of Passivating Layers on Chalcopyrite Leached with Ferric Ion Using Small Alumina Balls
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Utilisation of Inorganic Substrates by Alicyclobacillus - Like Strain FP1
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Systems Biology of Acidophile Biofilms for Efficient Metal Extraction
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A Study of Permeability and Diffusion at the Agglomerate-Scale in Heap (Bio)Leaching Systems
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1130Bioleaching of a Molybdenite Concentrate by...

Bioleaching of a Molybdenite Concentrate by Thermophilic Microorganisms in a New RELVA-RBAL 1 AIR LIFT Bio-Reactor

Abstract:

In this paper bioleaching of molybdenite concentrate (MoS₂) with extreme thermophilic microorganisms at constant temperature (65°C) was studied using a new RELVA-RBAL1 bioreactor, designed at the Faculty of Chemistry of the National Autonomous University of Mexico (UNAM). The equipment keeps homogeneous medium creating physical, chemical and biological conditions that lead to optimal growth of microorganisms, improving its resistance and tolerance to molybdenum significantly, thus achieving high extraction. The RELVA-ARBAL1 AIR LIFT bioreactor allows us the control of necessary conditions for a growth more efficient of the microorganisms. This will allow leach more rapidly the ore, increasing the molybdenum extraction kinetics. The results of extraction from bioleaching molybdenite in an orbital incubator were <1% Mo. The new RELVA-RBAL 1 AIR LIFT bioreactor showed a hight efficiency, 96.84% of molybdenum extracted, most reported, in the shortest time.

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Periodical:

Advanced Materials Research (Volume 1130)

Pages:

300-303

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1130.300

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Online since:

November 2015

Authors:

R.E. Rivera Santillan*, F. Patricio Ramirez, F.A. Lopez Lopez

Keywords:

Concentrate, Hydrometallurgical Bio-Reactor, Molybdenite Bioleaching, Sulfides, Thermophiles

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