Publications: Ralph, David
Mullett, M., Fornarelli, R. and Ralph, D. (2014) Nanofiltration of mine water: Impact of feed pH and membrane charge on resource recovery and water discharge. Membranes, 4 (2). pp. 163-180.
Minakshi, M., Ralph, D.E., Singh, P. and Yin, C-Y (2014) New insights into the electrochemical behavior of hematite (α-Fe2O3) microparticles in strong aqueous basic electrolyte: formation of metallic iron. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 45 (5). pp. 2023-2029.
Shiers, D.W., Ralph, D.E. and Watling, H.R. (2013) Substrate utilisation and chalcopyrite concentrate bioleaching at 60°c in the presence of nitrate. Advanced Materials Research, 825 . pp. 435-438.
Shiers, D.W., Ralph, D.E., Bryan, C.G. and Watling, H.R. (2013) Substrate utilisation by Acidianus brierleyi, Metallosphaera hakonensis and Sulfolobus metallicus in mixed ferrous ion and tetrathionate growth media. Minerals Engineering, 48 . pp. 86-93.
Shiers, D.W., Ralph, D.E. and Watling, H.R. (2013) The effect of ferrous iron addition during tetrathionate utilisation by some sulfobacillus species. Advanced Materials Research, 825 . pp. 447-450.
Minakshi, M., Singh, P., Ralph, D., Appadoo, D., Blackford, M. and Ionescu, M. (2012) Structural characteristics of olivine Li(Mg0.5Ni0.5)PO4 via TEM analysis. Ionics, 18 (6). pp. 583-590.
Blight, K.R., Candy, R.M., Menzel, M.J.M. and Ralph, D.E. (2012) Total dissolved solids and their effects on iron oxidation by chemolithotrophic cells. Hydrometallurgy, 125-126 . pp. 109-114.
Shiers, D.W., Ralph, D.E. and Watling, H.R. (2011) Batch culture of Acidithiobacillus caldus on tetrathionate. Biochemical Engineering Journal, 54 (3). pp. 185-191.
Yin, C-Y, Minakshi, M., Ralph, D.E., Jiang, Z-T, Xie, Z. and Guo, H. (2011) Hydrothermal synthesis of cubic α-Fe2O3 microparticles using glycine: Surface characterization, reaction mechanism and electrochemical activity. Journal of Alloys and Compounds, 509 (41). pp. 9821-9825.
Minakshi, M., Sharma, N., Ralph, D.E., Appadoo, D. and Nallathamby, K. (2011) Synthesis and characterization of Li(Co0.5Ni0.5)PO4 cathode for Li-Ion aqueous battery applications. Electrochemical and Solid-State Letters, 14 (6). A86-A89.
Shiers, D.W., Ralph, D.E. and Watling, H.R. (2010) A comparative study of substrate utilisation by Sulfobacillus species in mixed ferrous ion and tetrathionate growth medium. Hydrometallurgy, 104 (3-4). p. 363.
Watling, H.R., Watkin, E.L.J. and Ralph, D.E. (2010) The resilience and versatility of acidophiles that contribute to the bio-assisted extraction of metals from mineral sulphides. Environmental Technology, 31 (8). pp. 915-933.
Candy, R.M., Blight, K.R. and Ralph, D.E. (2009) Specific iron oxidation and cell growth rates of bacteria in batch culture. Hydrometallurgy, 98 (1-2). pp. 148-155.
Shiers, D.W., Ralph, D.E. and Watling, H.R. (2009) Substrate utilisation by Sulfobacillus thermosulfidooxidans in mixed ferrous ion and tetrathionate growth medium. Advanced Materials Research, 71-73 . pp. 251-254.
Blight, K.R., Candy, R.M. and Ralph, D.E. (2009) The preferential oxidation of orthorhombic sulfur during batch culture. Hydrometallurgy, 99 (1-2). pp. 100-104.
Blight, K.R. and Ralph, D.E. (2008) Aluminium sulphate and potassium nitrate effects on batch culture of iron oxidising bacteria. Hydrometallurgy, 92 (3-4). pp. 130-134.
Mishra, D., Kim, D-J, Ralph, D.E., Ahn, J-G and Rhee, Y-H (2008) Bioleaching of metals from spent lithium ion secondary batteries using Acidithiobacillus ferrooxidans. Waste Management, 28 (2). pp. 333-338.
Mishra, D., Kim, D.J., Ralph, D.E., Ahn, J.G. and Rhee, Y.H. (2008) Bioleaching of spent hydro-processing catalyst using acidophilic bacteria and its kinetics aspect. Journal of Hazardous Materials, 152 (3). pp. 1082-1091.
Blight, K.R. and Ralph, D.E. (2008) Maximum yield and standard enthalpy of growth of iron-oxidising bacteria. Hydrometallurgy, 93 (1-2). pp. 66-71.
Kim, D-J, Mishra, D., Park, K.H., Ahn, J.G. and Ralph, D.E. (2008) Metal leaching from spent petroleum catalyst by acidophilic bacteria in presence of Pyrite. Materials Transactions, 49 (10). pp. 2383-2388.
Mishra, D., Kim, D.J., Ralph, D.E., Ahn, J.G. and Rhee, Y.H. (2007) Bioleaching of vanadium rich spent refinery catalysts using sulfur oxidizing lithotrophs. Hydrometallurgy, 88 (1-4). pp. 202-209.
Kim, D.J., Mishra, D., Ralph, D.E., Ahn, J.G. and Rhee, Y.H. (2007) Application of Mesophilic Mixed Micro-Organisms for Recovery of Valuable Metals from Spent Refinery Catalysts. In: Biohydrometallurgy: From the Single Cell to the Environment, 2 - 5 September 2007, Frankfurt am Main, Germany.
Mishra, D., Kim, D.J., Ralph, D.E., Ahn, G.J. and Rhee, Y.H. (2006) Bioleaching of valuable metals from waste cathode materials of the lithium ion battery industry using Acidithiobacillus ferrooxidans. In: Green Processing 2006 - 3rd International Conference on the Sustainable Processing of Minerals, 5-6 June 2006, Newcastle, NSW.
Shiers, D.W., Blight, K.R. and Ralph, D.E. (2005) Sodium sulphate and sodium chloride effects on batch culture of iron oxidising bacteria. Hydrometallurgy, 80 (1-2). pp. 75-82.
Blight, K.R. and Ralph, D.E. (2004) Effect of ionic strength on iron oxidation with batch cultures of chemolithotrophic bacteria. Hydrometallurgy, 73 (3-4). pp. 325-334.
McEwan, K. and Ralph, D. (2002) The i-BO™ process and related treatments for mine waste remediation. In: First International Conference on Brownfield Sites: Assessment,Rehabilitation and Development, 2 - 4 September, Cadiz, Spain.
May, N., Ralph, D.E. and Hansford, G.S. (1997) Dynamic redox potential measurement for determining the ferric leach kinetics of pyrite. Minerals Engineering, 10 (11). pp. 1279-1290.
Scott, J.P., Fawell, P.D., Ralph, D.E. and Farrow, J.B. (1996) The shear degradation of high-molecular-weight flocculant solutions. Journal of Applied Polymer Science, 62 (12). pp. 2097-2106.