Guðmundur Gunnarsson - Efnis- og umhverfistækni
Guðmundur GunnarssonFagstjóri - Efnaferlar og efnistækni570 7173 Menntun: Efnaverkfræði (Ph.D) Áherslusvið: Ráðgjöf, rannsóknir og þróun varðandi efnaferla, keramik og dufttækni.
Education: 1981: Ph.D. Physical chemistry. Technical 1974: M.Sc. Chemical engineering. Technical Professional field at IceTec: Senior scientist and project manager, the last years at the department of materials and environmental technology. Projects can be classified in the following manner. 1. Energy intensive processes. Desk top studies of the possibilities of using domestic energy resources, hydroelectric power and geothermal energy in industry. 2. Silica and silicates. Production of zeolites and silicates from pumice, perlite and diatomite. Utilization of byproduct silica fume from ferrosilicon and silicon metal plants. Production of geothermal silica from geothermal brine in Svartsengi. Optimization of the properties of silica from olivine for different applications 3. Hydrothermal technology and ceramics. Production of ceramic powders, for example ferrites and zirconia, with hydrothermal methods. Production of ceramic microspheres for plasma spraying. Purification of raw materials for production of high purity zirconia. Inert anodes for aluminum electrolysis. Dental ceramics. 4. Chemical process technology. Dehydration of raw materials for magnesium metal production. Purification of carbon dioxide from geothermal power plants. Production of methanol from domestic resources. Production of magnesium chloride and silica from olivine. Extraction of hydrogen from geothermal gases. Production of sodium borohydride. 5. Other project. Fine grained material as fillers in concrete. New products from mineral wool. Protective clothing for use in the aluminum industry. Most of the above projects have been carried out in cooperation with companies and industries in Publications: Selected IceTec reports 1. Guðmundur Gunnarsson. Production of methanol from carbon dioxide fro the Svartsengi geothermal power plant(In Icelandic), ITÍ9909/HTD08, 1999. 2. Guðmundur Gunnarsson. Production of magnesium chloride and silica from olivine. Experimental results. ITI0004/HTD04/T, 2000. 3. Guðmundur Gunnarsson, Heramnn Þórðarson, Friðrik Daníelsson. Production of magnesium chloride and silica from olivine. Preliminary process description and cost assessment. 2000. 4. Guðmundur Gunnarsson, Development of olivine silica for green tire rubber formulations, ITÍ0311/HTD11/T, 2003. Chapters in conference proceedings 1. Guðmundur Gunnarsson, Edda Lilja Sveinsdóttir, Anna-Karin Westman, Tapio Lepistö, Tapio Mantyla. Mechanical properties and aging behaviour of hot isostatically pressed Y-ZrO2 ceramics made of hydrothermally produced and supercritically dried powders. In “Euro-ceramics”. G. de With, R. A. Terpstra R. Metselaar editors. 2. Guðmundur Gunnarsson, Edda Lilja Sveinsdóttir. Production of zirconia powders by hydrothermal methods and supercritical drying and their properties. Guðmundur Gunnarsson, Edda Lilja Sveinsdóttir Anna-Karin Westman Tapio Lepistö Tapio Mantyla O. Toft Sörensen. “Ceramic powder processing science”, proceedings of the second international conference, Berechtsgaden ( 3. Einarsdóttir, G.H., Sveinsdóttir, E.L., Thorsteinsson, F. and Gunnarsson, G. 1991. Production of zirconia (12 mol% ceria) powder by supercritical drying and its properties, in "Fine Ceramic Powders", British Ceramic Proceedings no. 47, s. 55 - 60. 4. Viðar Magnússon, Guðmundur Gunnarsson and Hörður Jónsson. Safety Clothing for the Aluminium Industry, in “Conference proceedings from the 1st International Conference and Workshop on Anode Rodding Plants for Primary Aluminium”, Reykjavik, 25 – 28 sept. 2001. 5. Guðmundur Gunnarsson. Purification of off-gas from geothermal power plants (In Icelandic), in “Orkuþing 2001” conference held 11. – 13. October 2001 in Reykjavík, p. 281 – 285. Book chapters 1. Gunnarsson, G. 1994. Hydrothermal methods in the fabrication of ceramics, in "Encyclopedia of advanced materials". Eds. D.Bloor, R.J.Brook, M.C.Flemings and S.Mahajan, Pergamon Press, Journal articles 1. Jónasson, H., Gunnarsson, G. and Tómasson, T. 1992. Potential use of geothermal steam in industrial processes. Result of IceTec studies. Geothermics, 21: 665 - 671. 2. Andersson, P. and Gunnarsson, G. 1993. Influence of alumina addition on zirconia in dry and water lubricated sliding. Tribologia, 12: 4 - 19. Patents 1. Gunnarsson, G. 1995. Ceramic powder and a process for the preparation thereof. European patent No. 0 414 695 B1, 4/10 1995. 2. Gunnarsson, G. 2004. A process for production of silica from olivine. International patent application no. WO2004048264, 2004.06.10. 3. Gunnarsson, G., Wallevik, O., Ekornöd, L.Ö., Langseth, B. and Engseth, P.B., 2005. Process for production of precipitated silica from olivine. International patent application no. WO2005068363, 2005.07.28.
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