Bioleaching of clays and iron oxide coatings from quartz sands

Štyriaková, Iveta; Mockovčiaková, Annamária; Štyriak, Igor; Kraus, Ivan; Uhlík, Peter; Madejová, Jana; Orolínová, Zuzana

doi:10.1016/j.clay.2012.02.020

Cited by 33 publications

(15 citation statements)

References 35 publications

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“…Despite the harsh environmental conditions of high mountain rock surfaces, autotrophs (Duc et al 2009a, b) and heterotrophs (Tscherko et al 2003;Bardgett et al 2007) may follow a succession, playing crucial roles in ecosystem development. Microorganisms can carry out mineral bioweathering of bedrock surfaces (Gorbushina and Broughton 2009) due to enzymatic reactions, pH reduction or release of oxalate, cianide, gluconic acid, siderophores, and chelating molecules, which react with the rocks (Mavris et al 2010;Styriakova et al 2012). Free living fungi and growing lichens could carried out mineral bioweathering due to mechanical actions of the lithic substrates (Gorbushina 2007).…”

Section: Colonization Of Rock Surface By Microorganismsmentioning

confidence: 99%

Microbial communities and primary succession in high altitude mountain environments

et al. 2015

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In high mountain environments, microbial communities are key players of soil formation and pioneer plant colonization and growth. In the last 10 years, many researches have been carried out to highlight their contribution. Bacteria, fungi, archaea, and algae are normal inhabitants of the most common habitats of high altitude mountains, such as glacier surfaces, rock wall surfaces, boulders, glacier waters, streams, and mineral soils. Here, microbial communities are the first colonizers, acting as keystone players in elemental transformation, carbon and nitrogen fixation, and promoting the mineral soil fertility and pioneer plant growth. Especially in high mountain environments, these processes are fundamental to assessing pedogenetic processes in order to better understand the consequences of rapid glacier melting and climate change. This review highlights the most important researches on the field, with a particular view on mountain environments, from glaciers to pioneer plant growth.

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Section: Colonization Of Rock Surface By Microorganismsmentioning

confidence: 99%

Microbial communities and primary succession in high altitude mountain environments

et al. 2015

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“…Biotite, pyroxene, amphibole, olivine, ilmenite, magnetite, and pyrite are the most important iron bearing minerals in soils which in all of them, iron is predominantly in bivalent state (Cornell and Schwertmann, 2004). Weathering causes the release of Fe II from rocks and formation of Fe III oxide/hydroxides which move through the crust mechanically or via complexation/ reduction by organic compounds and microbes, and then mix with clay silicates by precipitating and coating soil grains or scatter throughout the bulk of the clay as a separate phase (Ambikadevi and Lalithambika, 2000;Cornell and Schwertmann, 2004;Štyriaková et al, 2012;Stucki, 2013). Also, iron may present in clays as structural style either in oxidized form bound the aluminosilicate lattice in both the octahedral and tetrahedral sheets or as a compensating iron ion which substitutes for aluminum in silicate structure (Štyriaková and Štyriak, 2000;Mockovčiaková et al, 2008;Štyriaková et al, 2012;Stucki, 2013).…”

Section: Iron Impurities In Clay Mineralsmentioning

confidence: 99%

Biological beneficiation of kaolin: A review on iron removal

Hosseini

2015

Applied Clay Science

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“…Earlier laboratory investigations have shown that bacteria and fungi could be effectively used to remove iron from silica, kaolin, bauxite, and quartz sand (Štyriaková et al, 2012Gurevich et al, 2015;Šuba and Štyriaková, 2015). However, no systematic studies on bio benefication of quartz for the removal of iron and other impurities metals using indigenous fungi isolated from localoriginal mineral have been so far reported.…”

Section: Introductionmentioning

confidence: 99%

Bioleaching of Lodan quartz using Aspergillus ficuum

Handayani¹

2017

IMJ

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Depending on its purity, quartz has a wide application in industry. Fungi play an important role in the quartz purification. A bioleaching study of Lodan quartz sample from Rembang, Central Java was conducted to obtain a suitable raw material for industrial applications. The microbial process using selected-indigenous fungus of Aspergillus ficuum in terms of removing iron, aluminum, and other unwanted metals within quartz. The result was then compared to the chemical leaching using pure citric and oxalic acids. The bioleaching process removed the iron (Fe2O3) from the initial content (0.78%) in the original sand sample to reach a level of 0.013% Almost 98.3% iron was removed. The bioleaching test also removed the aluminum, manganese, chrome, and titanium to a very low level within the 12-day process. The iron content in this treated quartz met the standards for optical and high-quality glass. On the other hand, the chemical leaching using pure citric and oxalic acids concentrations were equal to those that were produced by A. ficuum could only removed 70.5% of iron around 0.23% iron and 0,29 % aluminium were still remained in the sand. This fact suggested that the bioleaching method is more effective than the chemical one using the organic acids. The use of fungi to remove iron from quartz has the potential to be an effective method for upgrading the content and the commercial value of the quartz. The experimental results of this study have provided significant opportunity to use biotechnological approach for producing the quartz as a feed material for the highquality glass industry.

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Bioleaching of clays and iron oxide coatings from quartz sands

Cited by 33 publications

References 35 publications

Microbial communities and primary succession in high altitude mountain environments

Microbial communities and primary succession in high altitude mountain environments

Biological beneficiation of kaolin: A review on iron removal

Bioleaching of Lodan quartz using Aspergillus ficuum

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