Electrochemical Method for Producing Valuable Sulfur Compounds from Waste Materials
- 1 “D.V.Sokolsky Institute of Fuel, Catalysis and Electrochemistry” JSC, Almaty, Kazakhstan
- 2 “D.V.Sokolsky Institute of Fuel, Catalysis and Electrochemistry” JSC, Almaty, Kazakhstan
- 3 “D.V.Sokolsky Institute of Fuel, Catalysis and Electrochemistry” JSC, Almaty, Kazakhstan
- 4 Worcester Polytechnic Institute, Worcester, MA, USA
- 5 Kazakh National Research Technical University Named after K.I. Satpayev, Almaty, Kazakhstan
- 6 Kazakh National Research Technical University Named after K.I. Satpayev, Almaty, Kazakhstan
Abstract
Method and mechanism for the formation of sulfur compounds during the process of sulfur electrochemical dissolution has been studied, including a technique for the production of composite sulfur-graphite electrode. Along with these, a 3D design is presented in the unit that was used to perform electrolytic reduction, using composite sulfur-graphite electrode. For the first time, a study was carried out for the simultaneous reactions of electroreduction and electrooxidation of sulfur at the sulfur-graphite electrode in sulfurous environment in the same electrolytic bath, with separate electrode spaces. Influences of current density, acid concentration and electrolyte temperature were studied, and it was demonstrated that sulfur is reduced in cathode chamber with formation of hydrogen sulfide gas, and is oxidized in the anode chamber with formation of sulfite and sulfate ions. It has been shown that the methods we propose can be used to produce important sulfur compounds through electrochemical dissolution of specially designed sulfur-graphite electrode.
- Baeshov, A., Zhdanov, S.I. and Tulebayev, A.K. (1997) Electrochemistry of Sulfur and Its Compounds. Gylym, Almaty, 160.
- Bayeshov, A.B., Omarova, A. and Kapsalyamov, B. (2004) Ecological Problems of the Oil Industry Tengizchevroil. The 3rd Scientific Conference of Higher Educational Institutions of South Kazakhstan, Shymkent, Vol. 7, 65-69.
- Bayeshov, A.B., Omarova, A.A, Bayeshova, S. and Kapsalyamov, B. (2004) Electrochemical Behavior of Elemental Sulfur in an Alkaline Medium at a Cathodic Polarization. International Scientific-Practical Conference of Young Scientists “Chemistry and Chemical Technology”, Almaty, 70-72.
- Bayeshov, A.B., Asabayeva, Z.K., Bayeshova, S.A. and Nogerbekov, B.Y. (2008) Cathodic Sulfur Recovery in a Solution of Sodium Carbonate. 4th International Beremzhanov Conference on Chemistry and Chemical Technology, Karaganda, 133-136.
- Manan, N.S.A., Aldous, L., Alias, Y., Murray, P., Yellowlees, L.J., Lagunas, M.C. and Hardacre, C. (2011) Electrochemistry of Sulfur and Polysulfides in Ionic Liquids. The Journal of Physical Chemistry B, 115, 13873-13879.
- Assabayeva, Z.K. (2010) Development Methods for the Synthesis of Inorganic Sulfur Compounds by Electrochemical Method. PhD Dissertation, Almaty, 26.
- Lurie, Y. (1973) Standardized Methods of Water Analysis. Chem., Moscow, 202-205.
- A.P. Kreshkov, Fundamentals of Analytical Chemistry, Qualitative and quantitative analysis, Chem., Moscow, 1965, 412-413.
- Charlot, G. (1969) Methods of Analytical Chemistry. Quantitative Analysis of Inorganic Compounds. 2nd Edition, Chem., Moscow, 668.
- Vasiliyev, V.P. (1989) Analytical Chemistry in 2 Parts. Physical and Chemical Methods of Analysis. Higher School, Moscow, 384.
- Busev, A.I. (1982) Analytical Chemistry of Sulfur. Chem., Moscow, 622.
- Williams, W.J. (1982) Definition of Anions. Chem., Moscow, 622.
- Lurie, Y. and Rybnikova, A.I. (1953) Chemical Analysis of Industrial Wastewater. Chem., Moscow, 79-80.