Chemical Technology

By , March 11, 2007 12:18 pm

1. Assoc. Prof. Magdalen Dimitrov Zlatanov, PhD – Head of Department
2. Assoc. Prof. Boyan Simeonov Boyanov, PhD
3. Assoc. Prof. Stefan Dimitrov Stamatov, PhD
4. Assoc. Prof. Ginka Atanasova Antova, PhD
5. Assist. Prof. Maria Jordanova Angelova, PhD
6. Assist. Prof. Georgi Ivanov Patronov
7. Elena Ruicheva Ivanova, MSc
8. Tanya Peneva Nenkova, MSc
9. Dencho Tenev Dimitrov, MSc

    The research in the Department is connected with the study on the thermodynamics, kinrtics and mechanics of inorganic chemical processes with the purpose of intensification and optimization, optimum designs for chemical reactors and realization in industry. More specifically, the research in the Department deals with the development of the theory and practice of metal sulphides oxidation and sulphide concentrations, solid phase interaction, kinetics and mechanisms, technological energy and ecological analysis in the chemical and metallurgical industries and new anode materials for zinc electrowinning. Many and various research methods are employed: chemical, X-ray diffraction analysis; differential thermal and thermodravimetric analysis; X-ray microanalysis and scanning electron microscopy; mineralogical analysis; Mossbauer spectroscopy; enthalpy and energy analysis, etc.Team:
    Assoc. Prof. Snejana Dimitrova Magaeva, PhD
    Assoc. Prof. Boyan Simeonov Boyanov, PhD
    Assist. Prof. Georgi Ivanov Patronov
    Ivanka Dimitrova Valchanova, MSc
    Dencho Tenev Dimitrov, MSc

    Selected publications:
    1. Sn. Magaeva, G. Patronov, “A Mathematical Model Study of Cumulative Energy Consumption in Copper Production”, Proc. of International Seminar “Contemporary Problems of Thermal Engineering”, Poland, 1998, 191 – 198
    2. Sn. Magaeva, G. Patronov, A. Lenchev, I. Grancharov, “Exergy Analysis of the Processing of Metallurgy SO2-containing Gases into Sulphuric Acid and Sulphur”, Journal of Mining and Metallurgy, 36B(2000), 77 – 92
    3. Sn. Magaeva, G. Patronov, D. Boiadjiev, L. Popova, “On the Coordination of Chemical Element Mass Balanse in Chemical Technology Processes”, University of Sofia ”Kl.Ohridski”, Bulgaria, Scientific Works, Vol. 91, Book 2, Chemistry, (2001), 63 – 67
    4. S. Magaeva and G. Patronov, “Assessment of the ecological sustainability of pyrometallurgical copper extraction”, Int. J. Exergy, Vol. 1, No.3, (2004), 375 – 384.
    5. S. Magaeva and G. Patronov, “On the energy effectiveness of the process of zinc sulphide concentrates roasting”, Proceedings of 12th International Metallurgy – Materials Congress, Istanbul, Turkey, 2005, 561-567
    6. B. Boyanov and R. Dimitrov, “DTA and TG study of PbSO4 dissociation in the presence of solid fuels”, Thermochimica Acta, 322 (1998) 69-75.
    7. B. Boyanov and I. Mitov, “Investigation of zinc sulfide concentrates by Mossbauer spectroscopy”, Journal of the University of Chemical Technology and Metallurgy, XXXVIII, 4 (2003) 1163-1166.
    8. B. S. Boyanov, V. V. Konareva and N. K. Kolev, “Purification of zinc sulfate solutions from cobalt and nickel through activated cementation”, Hydrometallurgy, 73, 1-2 (2004) 163-168.
    9. B. S. Boyanov, “Solid state interactions in the systems CaO(CaCO3)-Fe2O3 and CuFe2O4-CaO”, Journal of Mining and Metallurgy, 41 (1) (2005) 67-77.
    10. B. S. Boyanov and N. K. Kolev, “Characteristics and Roasting of Sulphide Zinc Concentrates in Fluid Bed Roaster”, Proceedings of the 4th International Conference ZINC 2006, Plovdiv, Bulgaria, 11-12 September, 2006, 275-285.

    The field of research investigation of the department of Organic Chemical Technology are biological active lipids:
    1. Analysis of lipids (physical and chemical indexes, fatty acids, sterols, tocopherols, phospholipids etc.). Analysis of lipids of cultural and wild flora, lipids of commercial products (vegetal and animal fats, margarine, shortenings, food stuffs), lipids from industrial wastes is carry out.
    2.Autoxidation, oxidative stability and stabilization of lipids. Chemical changes of lipids, results of autooxidative processes, natural stability and stabilization of lipids, influence of pro- and autooxidative factors, methods of their determination, technologies of obtaining of high stable products are studied.
    3. Chemical modifications of lipids. Chemical modifications of fatty acids (on base reactions of fatty acids and on base carboxylic group – esters and amides, as well as synthesis of phosphorylated lipids are investigated.Team:
    Assos. Prof. St. Stamatov, PhD
    Assos. Prof. M. Zlatanov, PhD
    Assist. Prof. G. Antova, PhD
    Assist. Prof. M. Angelova, PhD
    E. Ivanova, MSc
    T. Nenkova, MSc

    Selected publications:
    1. Zlatanov М. D., G. A. Antova, “Composition of biologically active lipids of Lamiaceae seed oils”, Grasas y Aceites, 55, 2, (2004), 143-147
    2. Antova G., P. Vasvasova, M. Zlatanov, “Studies upon the synthesis of cellulose stearate under microwave heating”, Carbohydrate Polymers, 57, (2004), 131-134
    3. Stephan D. Stamatov, and Jacek Stawinski, “Regioselective and stereospecific cleavage of a terminal oxirane system: A novel synthetic approach to lipid mediatorc congeners – 1,2 (2,3)-diacyl-3 (1)-halo sn-glycerols”, Biorganic&Medicinal Chemistry Letters,16, (2006), 3388-3391
    4. Stephan D. Stamatov and Jacek Stawinski, “Regioselective, Haloacylating Cleavage of an Oxirane System Mediated by Trifluoroacetic Anhydride/Trimethylsilyl Halides: An efficient Entry to 2-Acyl-3-haloglycerols”, SYNLETT, 14, (2006), 2251-2255
    5. Stephan D. Stamatov and Jacek Stawinski, “Direct Trifluoroacetylation Across a Trimethylsilyloxy System as a Stereospecific, Chemo- and Regioselective Approach to C3-Vicinal Halohydrins”, SYNLETT,3, (2007), 0439-0442
    6. Zlatanov M., M. Angelova, “The changes of lipid composition of high oleic sunflower oil during growing”, Scientia Agroculturae Bohemica, 35, (2004), 99-103
    7. Dragoev S., D. Balev, T. Vulkova, M. Zlatanov, S. Bahtchevanska, “A comparative stury on the effect of some antioxidants on the lipid and pigment oxidation in dry-fermented sausages”, Intern. J. of Food and Science Technology, 40, (2005), 977-983

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