Biohydrometallurgy for Nonsulfidic Minerals—A Review

Jain, N. K.; Sharma, D. K.

doi:10.1080/01490450490275271

Cited by 103 publications

(72 citation statements)

References 76 publications

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“…Reduction of particle size increases the total particle surface area of minerals that is exposed to the leaching process and therefore, is expected to increase the solubilisation rate (Bosecker 1997;Vasan et al 2001;Jain and Sharma 2004). This fact was partially confirmed in this study with leaching of K from both ore types.…”

Section: Discussionsupporting

confidence: 75%

“…This was attributed to the ease of releasing nutrients from such particle size because of larger particle surface exposed. As discussed by Modak et al (2001), and Jain and Sharma (2004), the use of small particle size minerals could save time and resources during commercial bioleaching processes. However, data on particle size should be interpreted with caution as it is difficult to identify a general trend through which this factor affects mobilisation of nutrients from minerals.…”

Section: Discussionmentioning

confidence: 99%

“…However, in the leaching of non-sulfidic minerals such as silicate, carbonate and oxide minerals that cannot be directly attacked by sulfur-oxidising bacteria, fungi are the more suitable candidates (Burgstaller and Schinner 1993;Jain and Sharma 2004;Rawlings 2005;Williams and Cloete 2008). In the leaching of non-sulfide ores, only two fungal types; Aspergillus and Penicillium spp., have received considerable attention (Burgstaller and Schinner 1993).…”

Section: Introductionmentioning

confidence: 99%

“…Most studies in this area have adopted bacteria to clean up such low grade ores especially in biohydrometallurgy of sulfide minerals (Jain and Sharma 2004;Rawlings 2005). However, in the leaching of non-sulfidic minerals such as silicate, carbonate and oxide minerals that cannot be directly attacked by sulfur-oxidising bacteria, fungi are the more suitable candidates (Burgstaller and Schinner 1993;Jain and Sharma 2004;Rawlings 2005;Williams and Cloete 2008).…”

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: 75%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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show abstract

“…The depletion of high quality iron ore (>60% Fe; <0.24% K) deposits necessitates processing of lower quality iron ore (<60% Fe; >0.24% K) (Jian and Sharma 2004;Corne Taljaard, personal communication). Elements such as phosphorous (P) and potassium (K) contained within the lower quality iron ore concentrates have a detrimental effect on steel making process, leading to penalties charged by the steel processing plants when purchasing iron ore concentrates containing high concentrations of P and K (Yusfin et al 1999).…”

Section: Introductionmentioning

confidence: 99%