Present paper have like objective the experimental study regarding the intensification of the drying process of malt using like drying agent the atmospheric air at ambient temperature and at 45oC, in flotation-fluidized bed. To reduce the operating drying period by using the fluidization agent at 45oC, it was studied the drying in mixt bed, formed by inert particles (sand, dp=150mm, smashed malt, ) and wet malt grains (in flotation state). Comparing the drying periods and the final moistures obtained at the malt drying in fixed bed (fixed mixt bed) with those obtained in fluidized mixt bed was establish that: the drying in fluidized conditions conduce at an uniform final moisture product; the economical operating conditions for a final moisture (4 - 6%) imposed by the technological process.

"This work presents the results obtained in the researches for synthesis of new polymer composites and their use for the preparation of ceramic powders and ceramic porous products. New inorganic- organic hydrogels were prepared by the copolymerization of acrylic acid with N, N'- methylene bis acrylamide in concentrated slurries of kaoline or alumina and mixtures of them. The hydrogels were used to prepare ceramic foams by gel casting. The ceramic foams prepared from these hydrogel precursors by the burning of the polymer can be used for waste gases purification (filtration of hot gases from power plants). The hydrodynamic characteristics of new ceramic foams were also assessed. "

It is proposed a dynamic model for adsorption of NH4+ ions from ammonia waters on volcanic tuff in a 10‐bed three‐phase (air – ammonia waters – volcanic tuff) fluidization column. The model consists in the nonstationary material balance differential equations. For each layer the ideal well‐mixing conditions are considered. The effluent ammonia ion concentrations, corresponding to each layer, have been measured at several time values in a laboratory‐scale column. The absolute relative mean error between the calculated and measured values of ammonia ion concentrations into liquid phase for all layers and times is 6.65 %, being in the order of magnitude of experimental errors.

The paper presents the study of treatment of wastewaters resulted from a petrochemical platform. The purpose of this work was to simulate the industrial process under the Monod model and to determine if the model could be used for engineering working. The Monod model used to simulate the industrial process was based on equation Monod modified by Jarzebski et al. First, the biodegradation time was determined using the model at an initial phenols concentration of 23.4 mg/L and a pure culture of Pseudomonas putida for the phenols biodegradation. Then, the biodegradation time was determined in the same operating conditions, but using a mixed culture of bacteria, Pseudomonas (various species). In both cases the results were compared with the experimental time. The model provided good results compared to the industrial process when selecting a pure culture of Pseudomonas putida for phenols biodegradation.