hr. J. Hear Mass Transfer. Vol. 30. No. 8, pp. 1565-1566, 1987
Pergamon Journals Ltd. Printed in Great Bntain.

In Memoriam
Professor J. W. Ciborowski(1918-1986)

ON 17 JULY 1986 death took away Professor Janusz
Ciborowski, an eminent Polish scientist in the field ofchemical and process engineering. Professor Ciborowski was a member of the Polish Academy of Sciences,
Head of the Chemical Engineering
DepartmentatWarsaw
TechnicalUniversity,
Chairmanof the
Chemical Engineering Committee of the Polish Academy of Sciences, and a member of the Honorary
Advisory Board of the International Journal of Heatand Mass Transfer, International Chemical Engineering and Journal of Engineering Physics. He represented
Poland in the European
FederationofChemical Engineering.
Professor Ciborowski was born on 26 January 1918
in Warsaw. In 1942 he received the M.Sc. degree fromthe clandestine
university program,and his M.Sc.
thesis was later officially confirmed by Warsaw Technical University
after the liberationof Poland. In
1947 he took the Ph.D. degree and in 1949 the D.Sc.
degree at the Chemical Faculty of the same university.

In 194647 he had a visiting appointment
at theChemical Engineering Departmentof Massachusetts
Institute of Technology.
After returning home, Professor Ciborowski
undertook
the enormousandresponsible task of creating a separate study in chemical engineering in Poland. In 1947 he organized thechair of chemical engineering at Warsaw TechnicalUniversity.
In 1950 he was nominatedan associate
professor,
in 1954 a professor,and in 1962 a full
professor of this university. He was elected a corresponding
member of the Polish Academy of Sciences in 1967 and then a full member in 1974. In1952, he published the first Polish academic textbook
Chemical Engineering which was followed by Numerical Problems in Chemical Engineering (1954), Fundamentals of Chemical Engineering (1965), and Process Engineering (1973). These books determined theobjectives and range of chemical engineering study
not only in Poland but also in several other countries.
ProfessorCiborowski
also worked out a detailed

1566

In Memorlam

syllabus of chemical engineering studies, which has
become a basis for all other technical universities inPoland.
Professor Janusz Ciborowski was also a founder ofthe new Chemical Engineering Department
at Warsaw Technical University. Owing to his initiative a
newly built Institute of Chemical Engineering
wasopened in 1975.
His scientific activities were mainly concerned withfluidization and drying. His pioneering studies dealt
with heat and mass transfer in fluidized beds, electrostatic effects during fluidization in gas-solid systems and direct electric heating of fluidized beds. The
above studies resulted in a monograph “Fluidization”
published in 1957. Further topics connected
withfluidization,
studied by Dr Ciborowski
and his coworkers, dealt with drying of different materials in a
fluidized bed, sublimation and resublimationof solids
in a fluidized bed, combustion,
decompositionofmineral raw materials and inorganic substances in a
fluidized bed, and applicationof a fluidized bed indifferent catalytic and non-catalytic
processes. Other
fields of his scientific activities include thermodynamic
and kinetic problems of heat and mass transfer indrying, sublimation and resublimation,
selected problems in two-phase systems (two-phase flow in horizontal tubes, gas entrainment by plunging liquid jets,

wet dust removal in scrubbers),
and some selected
problems in chemical reactors.
His scientific contributions
include over 130 published research papers, 11 patents, numerous papers
submitted
at various specializedconferences,andnumerous papers referring to organization of science.
ProfessorCiborowski
had supervised
22 Ph.D.
theses, 10 of his students later received D.Sc. degrees,and 14 of them became professors and associate professors. Professor Ciborowski had been very active inthe field of organization of science and education. He
had been Dean and Head of the Institute of ChemicalEngineering, he performed numerous responsible andsignificant tasks at his university and in other consulting bodies. In recognition of his eminent scientificachievements
he was conferred the title of Doctor
Honoris Causa by the Leningrad Technological Institute in 1969.
An outstanding
scientist, educatorand scienceorganizer has passed away. a man of exceptionalenergy and sense of duty. highly respected by thescientific world. He left behind splendid work anda feeling of profound grief in the hearts of his coworkers and students.
R. I. S~LOUKHIN
0. G. MARTYNENKO
R. POHORECKI