Janis LEMBA

Interests:

• Chemical Engineering - Membrane Processes (Electrodialysis) and Ion Exchange
• Biotechnology
• Organic and Amino Acids
• Food Industry
• Environmental Engineering

Languages: German, Russian, Latvian

Education:

• Riga Technical University (Faculty of Chemistry), 1970
• Dr.chem. (Candidate of Science in former USSR, Ph.D. in Western countries), Riga Technical University, 1975
• Chemical Cybernetics and Modeling Course, Moscow Mendeleyev Chemical Engineering Institute, 1980

Experience:

• Technician, Citric Acid Factory, Latvia, 1962 - 1968
• Lecturer and Associate Professor, Department of Chemical Engineering, Riga Technical University, 1975 -

Professional Activities and Memberships:

• Member , Latvian Scientists Society
• Member, Latvian Chemical Society
• Member, Association of Latvian Intellectuals
• Member, Latvian Council of Science Expert Committee for Materials Science and Technology, 2002 -

Recent/Representative Publications:

Textbooks -

• J. Lemba. Technical Thermodynamics, 1995, Riga: RTU, 200 pp. (in Latvian).
• J. Lemba. Industrial Process Kinetics and Chemical Reactors, 1979, Riga: RTU, 70 pp. (in Latvian).
• J. Lemba. Homogeneous Chemical Reactors, 1981, Riga: RTU, 62 pp. (in Latvian).
• J.Lemba. Chemical Engineering, 1999, Riga: Stampa Infoserviss,  416 pp. (in Latvian).
• R.Karklins, J.Lemba, G.Liepins. Biotechnology of Organic Acids, 2002,  Riga: Stampa Infoserviss,  214 pp. (in Latvian).

Scientific Publications -

• R.Karklins, L.Raminia, J.Lemba. Purification and isolation of organic compounds by ion exchange processes.- Proceedings of Latvian Academy of Sciences, 1995, N 5-6 , pp. 3-17 (in Latvian).
• 3 USSR Author's Certificates on Electrodialysis Method.
• J.Lemba, I.Kramzaka, V.Aizbalts, I.Kalvins, I.Melbergs, A.Sidorovs, A.Zarins. Method of Production of 3-(2,2,2-trimethylhydrazinium)propionate dihydrate. Patent LV 5046. 1993.
• J.Lemba, I.Kramzaka, V.Aizbalts, I.Kalvins, I.Melbergs, A.Sidorovs, A.Zarins Method of Production of 3-(2,2,2-trimethylhydrazinium)propionate dihydrate. Patent RF 1262900. -1993.
• R.Karklins, J.Lemba, L.Raminia, I.Lapele. Ion exchange and membrane processes for isocitric acid microbiological preparation. - 13-th International Congress of Chemical and Process Engineering "CHISA' 98", Praha, Czech Republic, 23 -28 August 1998, vol. 4, pp. 160.
• J.Lemba, N.Panchenko, V.Slavinska, M.Katkevich. Synthesis, isolation and purification of hydroxamic acids.// 13-th International Congress of Chemical and Process Engineering "CHISA' 98", Praha, Czech Republic, 23 -28 August 1998, vol.4, pp. 176.
• N.Panchenko, E.Korchagova, Dz.Sile, M.Katkevich, V.Slavinska, J.Lemba, I.Turovskis, E.Lukevics. Interaction of 2-oxo-4-phenylbutanoic acid ethyl ester with hydroxylamine.-   Latvian J. Chem., 1998, Nr.4, pp.77-80 (in Russian).
• I.Kramzaka, J.Lemba, I.Kalvins. Evaluation of membrane technological parameters and selection of membranes.-  13-th International Congress of Chemical and Process Engineering "CHISA' 98", Praha, Czech Republic, 23 -28 August 1998, vol.4, pp. 175.
• J.Lemba, R.Karklins, I.Lapele, L.Raminia. Environment harmless and economically attractive processes of organic acids microbiologycal production. -  Proc. Latvian Acad. Sci., Section B, 1999, vol. 53, N 2(601), pp.128-130.
• J.Lemba, R.Karklins, I.Lapele. Purification and isolation of organic acids by ion exchange and electrodialysis. // Scientific proceedings of Riga Technical university “Material science and applied chemistry”, Series No 1, Vol.1(2000), Riga, RTU, pp. 73-80
• J.Lemba, I.Dreijers, I.Kramzaka, I.Kalvins. Evaluation of membrane parameters and selection of membranes. -  Scientific Proceedings of Riga Technical University “Material Science and Applied Chemistry”(Riga: RTU), 2000, Series N 1, Vol.1,  pp. 81-87.
• R.Karklins, J.Lemba, U.Viesturs. Biotechnology for organic acids production. - G.I.T. Laboratory Journal, 2001, N 6, pp. 281-283.
• R.Karklins, J.Lemba, I.Lapele, A.Karklina. Investigations about a -ketoglutaric acid with anionites from n-alkanes fermentation solutions.-  Scientific Proceedings of Riga Technical University “Material Science and Applied Chemistry”(Riga: RTU), 2001, Ser. N 1, Vol.2, pp.8-14 (in Latvian).

Recent Research Projects:

• J.Lemba (Head of Project). The Theory of Membrane Processes and Ion Exchange, its Application for Organic Acids and Their Salts Technology Performance. Latvian Council of Science (1994-1996).
• J.Lemba (Head of Project). Investigations of Eelectrodialysis and Ion Exchange Processes for Ecologically Pure Technology Performance . Latvian Council of Science (1997-2000).
• J.Lemba (Head of Project). Investigations of Mass Transfer for New Nonexpensive and Ecologicallu Friendly Technology Development. Latvian Council of Science (2004 - ).
• 3 installed equipment units (electrodialysis) for Latvian Pharmaceutical and Food Industry, (1984 - 1995).

 

Hobbies: Bee-keeping, gardening

Last update 01.09.2005