Emeritus Professor
Phone: (775) 784-1602
Fax: (775) 327-5059
Office: LMR 256
E-mail: bautista@unr.edu

Education

• B. S. Chemical Engineering, University of Santo Tomas, Philippines, 1955
• S.M. Metallurgy, Massachusetts Institute of Technology, 1957
• Ph. D. Metallurgical Engineering, University of Wisconsin, Madison, 1961

Research Interests

• Hydrometallurgy of base metals, rare earths, precious and actinide metals;
• Leaching, electrodissolution, liquid-liquid (solvent) extraction, liquid membrane, precipitation, and electrodeposition;
• Rate of mass transfer and kinetics of chemical reactions;
• Modeling of mixer-settlers and fluidized bed electrochemical reactors (dissolution and precipitation);
• Modeling the chemical reaction systems in the in-situ leaching of minerals and in the liquid-liquid extraction of metals from aqueous solutions;
• High-temperature chemistry, vaporization, sublimation, molten metal calorimetry, high-pressure high-temperature chemical reactions;
• Oxidation of metals.

Recent Publications

• Z. Sun and R.G. Bautista, "The precipitation kinetics of magnesium carbonate by use of population balance method," Light Metals, (1999) 1145-1149.
• I.A. Lipiec and R.G. Bautista, "Considerations in the extraction of metal from heap leaches," Transactions of the Indian Institute of Metals, 51 [1] 7-16 (1998).
• X. Hu and R.G. Bautista, "Mass transfer model of chromium reduction in a fluidized bed electrochemical reactor," Separation Science and Technology, 32 [10] 1769 (1997).
• R.C. Hubli, T.K. Mukherjee, S. Venkatachalam, R.G. Bautista, and C.K. Gupta, "Kinetics of millerite dissolution in cupric chloride solutions," Hydrometallurgy, 38 [2] 149-160 (1995).
• K.C. Liddell and R.G. Bautista, "Concentration histories and wave fronts in the in-situ leaching of uraninite by peroxide-carbonate-bicarbonate solution: effects of component concentrations," Light Metals, (1995) 1357-1363.
• S. Kumar and R.G. Bautista, "A study of growth kinetics and mechanism of alumina precipitation by bayers process," Light Metals, (1994) 47-51.
• R.G. Bautista, "The process synthesis of bulk superconductors" JOM, 42 [6] 23-25 (1990).
• J.S. McPartland and R.G. Bautista, "Extraction of cobalt from hydrotreating catalysts using supercritical ammonia," Separation Science and Technology, 25 [13-15] 2045-2057 (1990).