Volume 49, Iss. 5, 2014

Journal of Chemical Technology and Metallurgy

49, Iss. 5, 2014
ISSN 1314-7471 (print)
ISSN 1314-7978 (on line)

EDITOR-IN- CHIEF
Prof. Dr. Bogdana Koumanova
Tel: (+ 359 2) 81 63 302
University of Chemical Technology and Metallurgy,
8 Kl. Ohridski ., 1756 Sofia, Bulgaria
E-mail: journal@uctm.edu


EFFECT OF THE VISCOSITY RATIO ON THE MASS TRANSFER INTO A SPHERICAL DROP IN LIQUID-LIQUID DISPERSIONS
Silvia Alexandrova, Maria Karsheva, Abdellah Saboni, Christophe Gourdon

CHARACTERIZATION OF NANOFILTRATION MEMBRANES: PORE RADIUS ESTIMATION USING TWO MODELS
Ibrahim Musbah, Delphine Cicéron, Abdellah Saboni, Silvia Alexandrova

INFLUENCE OF HYDRODYNAMIC CONDITIONS ON THE PROCESS OF HEAT AND MASS TRANSFER BETWEEN THE FLOW AND A RASCHIG RING CATALYST
Tatyana Petrova

OPTIMIZATION OF WATER EXTRACTION OF FENNEL SEEDS
Stanislava Boyadzhieva, George Angelov

CONCENTRATION OF VITAMIN C AND ANTIOXIDANT ACTIVITY OF ROSEHIP EXTRACTS
Silviya Georgieva, George Angelov, Stanislava Boyadzhieva

INFLUENCE OF TEMPERATURE AND INITIAL CONCENTRATION ON THE OXIDATION RATE OF SULFIDE FROM SEA WATER IN A FUEL CELL
Stefan Stefanov, Polina Panaiotova, Venko Beschkov

STUDY OF THE INFLUENCE OF DIFFERENT CATALYSTS ON THE RATE OF OXIDATION OF SULFIDE IONS IN MODEL SOLUTIONS OF SEAWATER
Nadezhda Dermendzhieva, Elena Razkazova-Velkova, Martin Martinov, Ljutzkan Ljutzkanov, Venko Beschkov


MODELING UNSTEADY MASS TRANSFER COUPLED WITH PARTICLE DEFORMATION I. EXAMPLE WITH HYDROGELS
Iren Tsibranska

GAS HOLD-UP PREDICTION IN GAS – LIQUID STIRRED TANK REACTOR USING CFD SIMULATION
Rositsa Stoykova, Dessislava Moutafchieva, Dimitrinka Popova, Veselin Iliev

A NEW APPROACH FOR MODELING THE BIOTRANSFORMATION OF CRUDE GLYCEROL BY USING NARX ANN
Elisaveta Kirilova, Sophia Yankova, Bilyana Ilieva, Natasha Vaklieva-Bancheva

SIMULATION OF BIODIESEL PRODUCTION BY TRANSESTERIFICATION OF VEGETABLE OILS
Chavdar Chilev, Evgeni Simeonov

RHEOLOGICAL PROPERTIES OF COSMETIC COMPOSITIONS CONTAINING ROSEMARY AND GRAPEFRUIT PULP AND SEEDS EXTRACTS
Kamelia Petkova-Parlapanska, Verginia Nancheva, Svetlomir Diankov, Ivaylo Hinkov, Maria Karsheva

RHEOLOGICAL INVESTIGATIONS OF POLY(HYDROXYBUTYRATE) AND POLY(ETHYLENE OXIDE) SOLUTIONS AND THEIR MIXTURES
Agnessa Nikolova, Rainer Schnabel

UTILIZATION OF VITICULTURE WASTES (RESIDUES) – LEAVES AND CANS
Maria Karsheva, Ekaterina Kirova

CASE-BASED REASONING CONTROL OF BIOLOGICAL WASTEWATER TREATMENT
Atanas Atanassov, Kosta Boshnakov

STUDY FOR THE PRESENCE OF GOLD AND EVALUATION OF ITS QUANTITATIVE CONTENT IN MINING WASTE
Alеxander Penchev, Iren Tsibranska

AN OPEN INNOVATION MODEL IN THE CONTEXT OF IMPROVING THE COMPETITIVENESS OF THE CHEMICAL AND METALLURGICAL INDUSTRIES
Georgi Kondev, Dimitar Tenchev, Paulina Vasileva