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. (2014) The effects of nitrate on substrate utilisation by some iron(II)- and sulfur-oxidising Bacteria and Archaea. Hydrometallurgy, In press .
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 pp. 119-125.
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 pp. 49-54.
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 pp. 525-532.
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.