ORCID Profile
0000-0002-5433-4845
Current Organisations
Future Battery Industries CRC
,
Curtin University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Petroleum and Coal Geology | Hydrometallurgy | Inorganic Geochemistry | Mineral Processing/Beneficiation | Geochemistry | Resources Engineering and Extractive Metallurgy
Oil and Gas Exploration | Mining and Extraction of Precious (Noble) Metal Ores | Mineral Exploration not elsewhere classified | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Mining and Extraction of Copper Ores |
Publisher: Informa UK Limited
Date: 27-09-2020
Publisher: Elsevier BV
Date: 08-2016
Publisher: Elsevier BV
Date: 05-2018
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 08-2017
Publisher: Elsevier BV
Date: 07-2015
Publisher: Elsevier BV
Date: 02-2015
Publisher: MDPI AG
Date: 16-06-2020
DOI: 10.3390/MIN10060545
Abstract: S les of the feed, underflow and overflow from water-based separations conducted using a continuous REFLUXTM Classifier involving inclined channels with a 3 mm spacing have been fractionated. Another REFLUXTM Classifier operating in a semi-batch configuration using a dense fluidising medium of lithium heteropolytungstates (LST) was used to determine the density distributions of the three streams. The partition surface of the separator was quantified, and the technique was validated against sink/float data for a −300 + 38 µm chromite ore separation. It was found that the LST flow fractionation determined the D50 with remarkable accuracy across the entire size range, with the Ep values also very good above 75 µm. For water-based continuous separations involving a gold ore covering the size range −1.0 + 0.090 mm, the D50 varied with particle size to the power −0.22 and the Ep remained relatively constant at approximately 170 kg/m3 for each of the narrow particle size ranges. These results were consistent with the partition surface validated based on the much finer size range of the higher density chromite ore. The performance of the continuous system was then modelled, with the results shown to agree well with separations conducted on the feed. This approach has been developed as an alternative to using the sink/float test, thus offering a new option with both a lower cost and minimal health and environmental risk. The findings from this study can in turn be used to assess the amenability of a given ore to gravity pre-concentration.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 04-2013
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 10-2011
Publisher: Informa UK Limited
Date: 07-1995
Publisher: Elsevier BV
Date: 10-2007
Publisher: Elsevier BV
Date: 10-2015
Publisher: Elsevier BV
Date: 12-2014
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier BV
Date: 03-2008
Publisher: Springer Science and Business Media LLC
Date: 09-2009
Publisher: Elsevier BV
Date: 04-2019
Publisher: Informa UK Limited
Date: 02-08-2018
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 05-2011
Publisher: Informa UK Limited
Date: 18-06-2019
Publisher: Elsevier BV
Date: 09-2015
Publisher: Trans Tech Publications, Ltd.
Date: 08-2017
DOI: 10.4028/WWW.SCIENTIFIC.NET/SSP.262.294
Abstract: A large number of microbial species commonly called phosphate solubilizing microorganisms (PSMs) are efficient at converting insoluble phosphate to soluble forms to prevent phosphorus limitation. This study examined the impact that PSMs had on a sterile and non-sterile monazite source and determined that they could be applied for bioleaching purposes to recover rare earth elements (REEs). On sterile monazite, Penicillum sp. released a total REE concentration of 12.32 mg L -1 after incubation for 8 days, however, this doubled when inoculated on to non-sterile ore (23.7 mg L -1 ). Similar results were recorded with E nterobacter aerogenes, P antoea agglomerans and Pseudomonas putida . Abiotic controls leached a total REE level of 0.65 mg L -1 . Examination of the leachate by HPLC identified several low molecular weight organic acids that corresponded with decreases in the media pH. The presence of a native consortia from the monazite ore combined with a known PSMs was more effective at leaching REEs from the monazite matrix than a single isolates or by the native population alone.
Publisher: Elsevier BV
Date: 02-2012
Publisher: Elsevier BV
Date: 2015
Publisher: Elsevier BV
Date: 11-2023
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 08-2006
Publisher: MDPI AG
Date: 25-11-2022
DOI: 10.3390/MIN12121507
Abstract: Chalcopyrite is well known as being refractory to conventional leaching approaches at atmospheric pressure. The current study investigated a hybrid approach using aqueous ammonia as a pH modifier for glycine-based lixiviant systems to leach copper from chalcopyrite while maintaining surface refreshment using ceramic media at room temperature. The glycine–ammonia system exhibited significantly better copper extraction than the traditional glycine–NaOH system. A copper extraction of 91.5% was achieved after 72 h of leaching by using 0.71 M ammonia, at a Gly:Cu molar ratio of 4:1, by using a solid content of 1%, with a ceramic media: solid ratio of 3:5 and at ambient temperature. Adding ceramic beads during leaching led to a breakup of particles and a refreshment of particles’ surfaces that significantly improved the copper extraction. At a solid content of 10%, oxygen is essential for leaching a copper extraction of 95.4% was achieved with oxygen injection, while only 33.4% copper extraction was obtained without introducing oxygen. A kinetic analysis indicates that the leaching rate is limited by combined liquid film diffusion and diffusion through the product layer. A conceptual flowsheet is proposed, where chalcopyrite concentrate can be extracted by a leaching–grinding process and copper can be recovered by a solvent extraction–electrowinning circuit.
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 08-2017
Publisher: Elsevier BV
Date: 03-2006
Publisher: MDPI AG
Date: 12-05-2022
DOI: 10.3390/MIN12050612
Abstract: This study presents the novel idea of a cyanide-free leaching method, i.e., glycine-ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing. Ammonia played a key role as a pH modifier, lixiviant and potential catalyst (as cupric ammine) in this study. Replacing ammonia with other pH modifiers (i.e., sodium hydroxide or lime) made the extractions infeasibly low ( %). The increased additions of glycine (23–93 kg/t), ammonia (30–157 kg/t) and permanganate (5–20 kg/t) enhanced gold and copper extractions considerably. Increasing the solids content from 20 to 40% did not make any obvious changes to copper extraction. However, gold leaching kinetics was slightly better at lower solids content. It was indicated that the staged addition of permanganate was unnecessary under the leaching conditions. Recovery of gold by CIL was shown to be feasible, and it improved gold extraction by 15%, but no effect was observed for copper extraction. Percentages of 76.5% gold and 64.5% copper were extracted in 48 h at 20 g/L glycine, 10 kg/t permanganate, 20 g/L carbon, pH 10.5 and 30% solids. Higher extractions could be potentially achieved by further optimization, such as by increasing permanganate addition, extending leaching time and ultra-fine grinding.
Publisher: Elsevier BV
Date: 03-2006
Publisher: Springer Science and Business Media LLC
Date: 28-11-2018
DOI: 10.1007/S00253-018-9526-Z
Abstract: In an era of environmental degradation, and water, and mineral scarcity, enhancing microbial function in sustainable mining has become a prerequisite for the future of the green economy. In recent years, the extensive use of rare earth elements (REEs) in green and smart technologies has led to an increase in the focus on recovery and separation of REEs from ore matrices. However, the recovery of REEs using traditional methods is complex and energy intensive, leading to the requirement to develop processes which are more economically feasible and environmentally friendly. The use of phosphate solubilizing microorganisms for bioleaching of REEs provides a biotechnical approach for the recovery of REEs from primary and secondary sources. However, managing and understanding the microbial-mineral interactions in order to develop a successful method for bioleaching of REEs still remains a major challenge. This review focuses on the use of microbes for the bioleaching of REEs and highlights the importance of genomic studies in order to narrow down potential microorganisms for the optimal extraction of REEs.
Publisher: Elsevier BV
Date: 06-2011
Publisher: Informa UK Limited
Date: 15-05-2019
Publisher: Elsevier BV
Date: 11-2002
Publisher: Elsevier BV
Date: 03-2019
Publisher: Elsevier BV
Date: 08-2008
Publisher: Elsevier BV
Date: 03-2019
Publisher: Elsevier BV
Date: 05-2011
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 02-2014
Publisher: Inderscience Publishers
Date: 2009
Publisher: Elsevier BV
Date: 07-2015
Publisher: Inderscience Publishers
Date: 2009
Publisher: Elsevier BV
Date: 02-2008
Publisher: Elsevier BV
Date: 06-2013
Publisher: Springer Science and Business Media LLC
Date: 21-03-2017
DOI: 10.1007/S00449-017-1757-3
Abstract: Many microbial species are capable of solubilising insoluble forms of phosphate and are used in agriculture to improve plant growth. In this study, we apply the use of known phosphate solubilising microbes (PSM) to the release of rare-earth elements (REE) from the rare-earth phosphate mineral, monazite. Two sources of monazite were used, a weathered monazite and mineral sand monazite, both from Western Australia. When incubated with PSM, the REE were preferentially released into the leachate. Penicillum sp. released a total concentration of 12.32 mg L
Publisher: Elsevier BV
Date: 11-2017
Publisher: Informa UK Limited
Date: 09-2009
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 09-2017
Publisher: Elsevier BV
Date: 10-2014
Publisher: Elsevier BV
Date: 06-2011
Publisher: Springer Science and Business Media LLC
Date: 10-2008
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 03-2016
Publisher: Springer Science and Business Media LLC
Date: 09-08-2019
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 12-1996
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 12-2023
Publisher: Elsevier BV
Date: 12-2013
Publisher: Informa UK Limited
Date: 02-08-2020
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 06-2011
Publisher: Elsevier BV
Date: 10-2009
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.RESMIC.2018.05.007
Abstract: The unique physiochemical properties exhibited by rare earth elements (REEs) and their increasing application in high-tech industries has created a demand for secure supply lines with established recovery procedures that create minimal environmental damage. Bioleaching experiments conducted on a non-sterile monazite concentrate with a known phosphate solubilising microorganism (PSM) resulted in greater mobilisation of REEs into solution in comparison to experiments conducted on sterile monazite. By combining the native consortia with an introduced PSM, a syntrophic effect between the populations effectively leached a greater amount of REEs than either a single PSM or the indigenous population alone. With sterile monazite, Penicillium sp.CF1 inoculated experiments released a total REE concentration of 12.32 mg L
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 03-2019
Publisher: Elsevier BV
Date: 09-2016
Publisher: Elsevier BV
Date: 2008
Publisher: Elsevier BV
Date: 11-2017
Publisher: Elsevier BV
Date: 08-2006
Publisher: Elsevier BV
Date: 08-2019
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 06-2013
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 11-2019
Publisher: Informa UK Limited
Date: 26-10-2018
Publisher: MDPI AG
Date: 18-05-2023
DOI: 10.3390/MICROORGANISMS11051331
Abstract: The adsorption behaviour of micro-organisms during the initial attachment stage of biofilm formation affects subsequent stages. The available area for attachment and the chemophysical properties of a surface affect microbial attachment performance. This study focused on the initial attachment behaviour of Klebsiella aerogenes on monazite by measuring the ratio of planktonic against sessile subpopulations (P:S ratio), and the potential role of extracellular DNA (eDNA). eDNA production, effects of physicochemical properties of the surface, particle size, total available area for attachment, and the initial inoculation size on the attachment behaviour were tested. K. aerogenes attached to monazite immediately after exposure to the ore however, the P:S ratio significantly (p = 0.05) changed in response to the particle size, available area, and inoculation size. Attachment occurred preferentially on larger-sized (~50 µm) particles, and either decreasing the inoculation size or increasing the available area further promoted attachment. Nevertheless, a portion of the inoculated cells always remained in a planktonic state. K. aerogenes produced lower eDNA in response to the changed surface chemical properties when monazite was replaced by xenotime. Using pure eDNA to cover the monazite surface significantly (p ≤ 0.05) hindered bacterial attachment due to the repulsive interaction between the eDNA layer and bacteria.
Publisher: Wiley
Date: 08-06-2023
Abstract: Microbial attachment and biofilm formation is a ubiquitous behaviour of microorganisms and is the most crucial prerequisite of contact bioleaching. Monazite and xenotime are two commercially exploitable minerals containing rare earth elements (REEs). Bioleaching using phosphate solubilizing microorganisms is a green biotechnological approach for the extraction of REEs. In this study, microbial attachment and biofilm formation of Klebsiella aerogenes ATCC 13048 on the surface of these minerals were investigated using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). In a batch culture system, K. aerogenes was able to attach and form biofilms on the surface of three phosphate minerals. The microscopy records showed three distinctive stages of biofilm development for K. aerogenes commencing with initial attachment to the surface occurring in the first minutes of microbial inoculation. This was followed by colonization of the surface and formation of a mature biofilm as the second distinguishable stage, with progression to dispersion as the final stage. The biofilm had a thin‐layer structure. The colonization and biofilm formation were localized toward physical surface imperfections such as cracks, pits, grooves and dents. In comparison to monazite and xenotime crystals, a higher proportion of the surface of the high‐grade monazite ore was covered by biofilm which could be due to its higher surface roughness. No selective attachment or colonization toward specific mineralogy or chemical composition of the minerals was detected. Finally, in contrast to abiotic leaching of control s les, microbial activity resulted in extensive microbial erosion on the high‐grade monazite ore.
Publisher: Informa UK Limited
Date: 26-10-2017
Publisher: Elsevier BV
Date: 06-2018
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 10-2018
DOI: 10.1016/J.SCITOTENV.2018.05.182
Abstract: There is an increasing trend in the occurrence of coal worker's pneumoconiosis even in developed countries such as the US and Australia who have believed such an issue have been well controlled in the past. Water spray is one of the most commonly applied methods for underground coal mines dust control, and research have shown the dust suppression efficiency can be greatly improved by adding surfactants. However, the literature appears to show inconsistent results that do not provide the coal mining industry with a clearly effective solution. The breakthrough in this field relies on the achievements in prior work, but an up-to-date critical review was not found. By critically reviewing prior studies, this paper highlights the advances in the surfactant-aided coal dust suppression technology. Firstly, the surfactant chemical structure, surfactant type and mechanism of surfactant adsorption were explained. Secondly, the commonly used surfactant efficiency evaluation methods were described. This is important for producing comparable and reproducible results. After that, key aspects of the influencing factors were discussed, which are essential for developing effective and robust dust suppression products. In the discussion on the challenges and further research directions, we suggest more focus should be on the dynamic interaction between the coal particle and water droplet in wind tunnels or well controlled onsite conditions.
Publisher: Elsevier BV
Date: 11-2002
Publisher: Informa UK Limited
Date: 26-12-2020
Publisher: Elsevier BV
Date: 11-2002
Publisher: Elsevier
Date: 2000
Publisher: Elsevier BV
Date: 06-2018
Location: United Kingdom of Great Britain and Northern Ireland
Location: South Africa
Location: South Africa
Start Date: 03-2017
End Date: 06-2020
Amount: $157,728.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2014
End Date: 12-2014
Amount: $700,000.00
Funder: Australian Research Council
View Funded Activity