Microbial Dissolution of Iron Surface Coatings in Industrial Minerals

Jaroslav Šuba; Iveta Štyriaková; Igor Štyriak; Darina Štyriaková

doi:10.4028/www.scientific.net/SSP.262.255

Paper Titles

Bioleaching of Low-Grade Chalcopyrite Ore by the Thermophilic Archaean Acidianus brierleyi
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Influence of CO₂ Supplementation on the Bioleaching of a Copper Concentrate from Kupferschiefer Ore
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Unravelling the Complexity of Heap Bioleaching
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Copper Heap Bioleach Microbiology - Progress and Challenges
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Microbial Dissolution of Iron Surface Coatings in Industrial Minerals
p.255

Characterization and Localized Insight into Leaching of Sulfide Minerals
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Method for the Recovery of Indium from Diluted Bioleaching Solutions
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Changes in Metal Leachability through Stimulation of Iron Reducing Communities within Waste Sludge
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Mechanism of Silver-Catalyzed Bioleaching of Enargite Concentrate
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Microbial Dissolution of Iron Surface Coatings in Industrial Minerals

Abstract:

The purpose of this work was to investigate the phenomenon of microbial iron reduction in industrial minerals and materials. These materials are generally not pure, often associated with impurities usually in the form of Fe³⁺. In all cases, the presence of iron affects the colour and the physical properties of the mineral and therefore lowers their industrial value and limits their application. In this study bentonite, kaolin and quartz sand sample were used for the experiments and compared in effectiveness of iron dissolution. The experimental results showed that after 30 days of bioleaching process, bacteria are able to remove 9.29% of Fe occurring in the kaolin sample (K-I) in amorphous form of oxyhydroxides and approximately 12% of Fe from the bentonite sample (B-JP) also in amorphous form of oxyhydroxides. In the quartz sand sample C3-15D, the concentration of Fe decreased by 15% after 15 days of bioleaching process and in the sample C3-30D after 30 days of bioleaching process by 24.7%.

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Periodical:

Solid State Phenomena (Volume 262)

Pages:

255-258

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.262.255

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Online since:

August 2017

Authors:

Jaroslav Šuba*, Iveta Štyriaková, Igor Štyriak, Darina Štyriaková

Keywords:

Bentonite, Bioleaching, Iron Minerals, Kaolin, Quartz Sands

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References

[1] I. Štyriaková, I. Štyriak, Iron removal from kaolins by bacterial leaching. Ceramics Silikáty, 44 (2000) 135-141.

Google Scholar

[2] E. Lewicka, P. Wyszomirski, Slovak bentonite and their utilization in polish 18th Conference on News and Prospects of Economies Mineral Raw Materials, Gospodarka Surowcami Mineralnymi. 242008) 235-250.

DOI: 10.2478/v10269-012-0001-7

Google Scholar

[3] E.Y. Lee, K.S. Cho, H. Wook Ryu, Microbial refinement of kaolin by iron-reducing bacteria, Appl. Clay Sci. 22 (2002) 47-53.

DOI: 10.1016/s0169-1317(02)00111-4

Google Scholar

[4] O.V. Paryushkina, N.A. Mamina, N. A. Pankova, G.M. Matveev, Raw Materials for Glass in Russia. EMKO, Moscu, 1995, (in Russian).

Google Scholar