Degrees:

D.Sc. (habililtation) in Chemical Engineering - Warsaw University of Technology, 1996
Ph.D. in Chemical Engineering - Lodz Technical University, 1981
M.Sc. in Chemical Engineering - Lodz Technical University, 1974

University career:

International experience (visits longer than 2 weeks are shown):

2003 - IRTA, Center of Meat Technology, Monells, Spain - visiting scientist - 1 month
2002 - IRTA, Center of Meat Technology, Monells, Spain - visiting scientist - 1 month
1999 - IRTA, Center of Meat Technology, Monells, Spain - visiting scientist - 3 months
1997 - Chem. Eng. Dept., UNICAMP. Campinas, Brazil - visiting prof. - 2 months
1995 - Mech. Eng. Dept., UNICAMP, Campinas, Brazil - visiting prof. - 2 months
1994 - Chem. Eng. Dept., Univ. of Canterbury, Christchurch, NZ, - visiting sci. - 2 weeks
1991 - 1992 - Chem. Eng. I, Univ. of Lund, Sweden - visiting sci. - 14 months
1981 - 1983 - Chem. Eng. Dept., McGill University, Montreal, Canada - postdoc fellow - 24 months

Scientific activities:

2003 - ... Member of Editorial Board of Drying Technology International Journal
2003 - ... Member of Editorial Board of Chemical Engineering Research and Design Journal
2000 - Guest Editor, special issue Drying Technology International Journal
2000 - ... member of scientific committees of several international drying symposia
             (IDS'2000, IDS'2002, IDS'2004, NDC1, NDC2)
1996 - ... Secretary of Advisory Panel of International Drying Symposia
             (http://chemeng.p.lodz.pl/idsap/ )
1995 - ... Delegate of Poland, Working Party on Drying of EFCE
             (http://www.hyprotech.com/proman/efce/ )
1995 - ... Secretary, Drying Section, Committee of Chemical and Process Engineering of the Polish
             Academy of Sciences (http://wipos.p.lodz.pl/dry/sekcja.html )

Research interests and current projects:

My research interests concentrate on drying related processes including drying of highly deformable solids (gels), drying in superheated steam, supercritical drying, simulation of drying processes.
Current research projects include:

Aerogel filters for filtration of nanometric particles.
Aerogel layer is deposited on fibrous mat substrate by sol-gel technology and supercritical drying. The properties of the aerogel layer as filtration medium are studied. Simulation of Knudsen gas flow in aerogel structure was performed and compared to experimental results of permeability. Filtration experiments in the range 10-100 nm were performed. At present methods of filter hydrophobisation are investigated. Potential medical applications are foreseen.
One Ph.D. thesis completed, one in progress.

Simulation of convective drying of highly shrinking gel cylinders
Experiments are made on convective drying of gel cylinders in carefully controlled conditions. Three models describing the process of drying with shrinkage are used to identify the dependence of effective water diffusivity in gel on temperature and moisture content in the range of uniform shrinkage. At present, drying stress is not considered. The study may be considered as preliminary before embarking on nonlinear problem of stress-deformation model of drying.
One Ph.D. in its final stage.

Drying of biomass in superheated steam flash dryer
Superheated steam flash drying may become a standard tool for drying large amounts of biomass produced in Poland as renewable fuel. An experimental rig for measurements of sorption isobars and kinetics of drying of a single particle (wood chip) was constructed. Simulation studies were performed comparing superheated steam drying and rotary convective drying of wood biomass. A two-dimensional model of flash drying is used to simulate drying in a flash dryer.
Two Ph.D. initiated.

Continuous development of computer code dryPAK for simulation of drying processes.
The program was distributed to over 50 international users including large companies.

Teaching activities:

CE220 - Computer science I, Lodz TU
CE221 - Computer science II, Lodz TU
CE222 - Computer science III, Lodz TU
CE501 - Computer aided process design I, Lodz TU
CE502 - Computer aided process design II, Lodz TU
EE 405 - Environmental process engineering, Lodz TU
Computer Science and programming - PhD course, Lodz TU
Courses and lectures abroad (subjects: heat and mass transfer, drying - McGill University, UNICAMP, University of Canterbury, Abo Akademi)

Industrial consulting:

Over 20 process designs of installations for drying and/or cooling of
white sugar in (vibrated) fluid beds.
Process design of a combined spray-fluid bed dryer for Ca-Mg phosphates.
A simulation model of a flash dryer for superheated steam drying of tobacco.
A simulation model of a rotary dryer for convective drying of tobacco.
A simulation model of heat transfer in a fluid bed reactor for thermal urea decomposition.
Process design of dryer-calciner for anhydrous KOH installation.
Seven registered Polish patents.

Selected recent publications:

Pakowski Z., Glebowski M. - Symulacja procesów w inzynierii chemicznej (Simulation of chemical engineering processes), Wydawnictwo Politechniki Lódzkiej, Lódz, 2001, ISBN 83-7283-034-7 - a handbook - 402 pp.

Pakowski Z., Mujumdar A.S. - "Basic Process Calculations and Simulations in Drying", Handbook of Industrial Drying, M.Dekker, III ed., (in print)

Comaposada J., Gou P., Pakowski Z., Arnau J. - Desorption Isotherms for Pork Meat at Different NaCl Contents and Temperatures, Drying Technology, 18 (3) 2000

Pakowski Z., Nowacka U. Abo Zebida O., Glebowski M. - Badania skutecznosci filtrów aerozelowych w zakresie nanometrycznym (Investigation of effectvity of aerogel filters in the nanometric range), Inzynieria Chemiczna i Procesowa, 22, 3D, 2001, 1085-1090

Pakowski Z., Maciszewska K. - Ocena przydatnosci metod hydrofobizacji filtrów wlóknistych z naniesionym aerozelem krzemionkowym (Evaluation of methods of hydrophobisation of silica aerogel filters), Przemysl Chemiczny 82/8-9, 2003

Pakowski Z., Comaposada J., Gou P., Arnau J. - Experimental water diffusivity identification in raw meat based on Fickian diffusion model with shrinkage, European Drying Symposium, EU Drying 03, Crete, 2003

Pakowski Z., Druzdzel A., Drwiega J. - Validation of a model of an expanding superheated steam flash dryer for cut tobacco based on processing data, Drying Technology, 1&2, 22, 45-58, 2004

Pakowski Z., Krupinska B., Adamski R. - Izobara sorpcji drewna i jej wykorzystanie w modelu suszarki pneumatycznej na pare przegrzana (Sorption isobar and its application in a superheated steam flash dryer model), Inzynieria Chemiczna i Procesowa, 25, 2004, 1429-1434

Pakowski Z., Maciszewska K. - Przepuszczalnosc dla gazow filtrow wloknistych z naniesionym aerozelem krzemionkowym poddanych hydrofobizacji (Permeability for gases of fibrous filters with deposited hydrophobized silica aerogel layer), Inzynieria Chemiczna i Procesowa, 25, 2004, 1435-1441

Updated: 11. 07. 2004