Mobilization of phosphorus from iron ore by the bacterium Burkholderia caribensis FeGL03

Delvasto, Pedro; Ballester, A.; Muñoz, J.A.; González, F.; Blázquez, M.L.; Igual, José M.; Valverde, Ángel; García-Balboa, C.

doi:10.1016/j.mineng.2008.03.001

Cited by 71 publications

(50 citation statements)

References 44 publications

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“…Sheng et al (2008) suggested that gluconic and acetic acid production by Bacillus globisporus influenced the released of K from feldspar mineral. Similar idea was pointed out by Delvasto et al (2009) having utilised Burkholderia caribensis FeGL03 for beneficiation of iron ore materials. In their study, gluconic acid was noted to play a central role during the leaching process.…”

Section: Discussionsupporting

confidence: 54%

“…In spite of this fact, the deviation of P solubilisation from such trend during this study, suggests that finer particle size may not be applicable to all mineral/ore leaching processes. Delvasto et al (2009) reported a similar scenario where more P was leached from coarser ore particle (2 mm) as compared to those with smaller particle size (0.2 mm).…”

Section: Discussionmentioning

confidence: 82%

“…easy target for attack by organic acid anion. Oxalate chelation of these cations results in structural imbalance and therefore, may lead to the dissolution and release of other elements embedded in minerals such as K and P (Yuan et al 2004;Delvasto et al 2009). Secondly, both protons (from organic acids) and K (from minerals such as muscovite) are monovalent, but the size of the protons (0.32 9 10 -10 m) is much smaller than that of K (2.03 9 10 -10 m) (Lapeyrie et al 1987;Yuan et al 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Mobilisation of nutrients from these minerals has been previously linked to effects of organic acid produced by microorganisms (Badr et al 2006;Delvasto 2009;van Schöll et al 2006a;Sheng et al 2008;. Sheng et al (2008) suggested that gluconic and acetic acid production by Bacillus globisporus influenced the released of K from feldspar mineral.…”

Section: Discussionmentioning

confidence: 99%

“…High grades iron ore are usually associated with the Asbestos Hills subgroup while the medium and lower grade iron ore are found in the Campbell Rand and Gamagara subgroups, respectively (Carney and Mienie 2003). The low grade iron ore of Sishen mine has high K ([0.24%) and P ([0.03) contents that diminishes their market value and could render them non-exportable because of their negative impact on the smelting process in the blast furnace (Parks et al 1990;Yusfin et al 1999;Williams and Cloete 2008;Delvasto et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Adeleke

Cloete

Bertrand

et al. 2010

World J Microbiol Biotechnol

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Mutualistic roles of ectomycorrhizal (ECM) fungi have been linked to their ability to produce organic acids that aid in the dissolution of insoluble minerals in the rhizosphere. This ability of ECM fungi was utilised to investigate their potential participation in the mobilisation of nutrients such as phosphorus (P) and potassium (K) from a typical insoluble ore-iron ore. In vitro pure cultures of four different ECM fungi; Pisolithus tinctorius, Paxillus involutus, Phialocephala fortini, and Suillus tomentosus were screened for their ability to mobilise P and K from two types of non-exportable Sishen iron ore. When present in iron ore, these elements are deleterious and reduce the commercial values of the ore. Experiment was set up with different treatments that included two ore types (KGT and SK) and five particle sizes of each ore type. Results indicated the potential of the four fungi to mobilise P and K from the two iron ore types though at different levels. Ore type, particle size, organic acid production and attachment of the fungi to the iron ore were all found to play important roles in the mobilisation of nutrients from these ores.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Adeleke

Cloete

Bertrand

et al. 2010

World J Microbiol Biotechnol

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Bioleaching of rare earth elements from monazite sand

Brisson

Zhuang

Alvarez‐Cohen

2015

Biotech & Bioengineering

135

109

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Three fungal strains were found to be capable of bioleaching rare earth elements from monazite, a rare earth phosphate mineral, utilizing the monazite as a phosphate source and releasing rare earth cations into solution. These organisms include one known phosphate solubilizing fungus, Aspergillus niger ATCC 1015, as well as two newly isolated fungi: an Aspergillus terreus strain ML3-1 and a Paecilomyces spp. strain WE3-F. Although monazite also contains the radioactive element Thorium, bioleaching by these fungi preferentially solubilized rare earth elements over Thorium, leaving the Thorium in the solid residual. Adjustments in growth media composition improved bioleaching performance measured as rare earth release. Cell-free spent medium generated during growth of A. terreus strain ML3-1 and Paecilomyces spp. strain WE3-F in the presence of monazite leached rare earths to concentrations 1.7-3.8 times those of HCl solutions of comparable pH, indicating that compounds exogenously released by these organisms contribute substantially to leaching. Organic acids released by the organisms included acetic, citric, gluconic, itaconic, oxalic, and succinic acids. Abiotic leaching with laboratory prepared solutions of these acids was not as effective as bioleaching or leaching with cell-free spent medium at releasing rare earths from monazite, indicating that compounds other than the identified organic acids contribute to leaching performance.

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