scholarly journals Kinetics of convective drying of the sugar beet pulp

2005 ◽  
Vol 59 (3-4) ◽  
pp. 73-77 ◽  
Author(s):  
Aleksandar Jokic ◽  
Julianna Gyura ◽  
Zoltan Zavargo ◽  
Ljubinko Levic
Keyword(s):  
Sugar Beet ◽  
Drying Kinetics ◽  
Sugar Beet Pulp ◽  
Convective Drying ◽  
Suitable Model ◽  
Rehydration Ratio ◽  
Beet Pulp ◽  
Drying Curves ◽  
Logarithmic Equation ◽  
Kinetics Of

Different authors have investigated hot air drying of sugar beet pulp, but no data on drying kinetics can be found in the literature. The aim of this study was to find suitable model for drying kinetics of sugar beet pulp. Of all models applied to drying curves, the best results were obtained for logarithmic equation. Also it was found that pressing of sugar beet pulp reduces time needed for drying by 10%, without any change in drying kinetics or any significant influence on coefficient of rehydration ratio.

scholarly journals The Influence of Temperature and Dolomite Addition on the Drying Kinetics of Sugar Beet Pulp (Beta Vulgaris L.)

2018 ◽  
Vol 63 (2) ◽  
pp. 53-62
Author(s):  
Adina Ghirisan ◽  
◽  
Simion Drăgan ◽  
Constantin Coţa ◽  
Nicolae Cioica ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Drying Kinetics ◽  
Sugar Beet Pulp ◽  
Influence Of Temperature ◽  
Beet Pulp ◽  
Kinetics Of

scholarly journals Mathematical modeling of pequi pulp drying and effective diffusivity determination

2017 ◽  
Vol 21 (7) ◽  
pp. 493-498 ◽  
Author(s):  
Elisabete P. de Sousa ◽  
Rossana M. F. de Figueirêdo ◽  
Josivanda P. Gomes ◽  
Alexandre J. de M. Queiroz ◽  
Deise S. de Castro ◽  
...  
Keyword(s):  
Experimental Data ◽  
Effective Diffusivity ◽  
Drying Kinetics ◽  
Convective Drying ◽  
Drying Time ◽  
Air Speed ◽  
Drying Curves ◽  
Increasing Temperature ◽  
Kinetics Of ◽  
Best Fit

ABSTRACT The aim of this work was to study the drying kinetics of pequi pulp by convective drying at different conditions of temperature (50, 60, 70 and 80 °C) and thickness (0.5, 1.0 and 1.5 cm) at the air speed of 1.0 m s-1, with no addition of adjuvant. The experimental data of pequi pulp drying kinetics were used to plot drying curves and fitted to the models: Midilli, Page, Henderson & Pabis and Newton. Effective diffusivity was calculated using the Fick’s diffusion model for a flat plate. It was found that, with increasing thickness, the drying time increased and, with increasing temperature, the drying time was reduced. The Midilli model showed the best fit to the experimental data of pequi pulp drying at all temperatures and thicknesses, presenting higher coefficients of determination (R2), indicating that this model satisfactorily represents the pequi pulp drying phenomenon. There was a trend of increase in the effective diffusivity with the increase in pulp layer thickness and temperature.

Kinetics of Remazol Black B adsorption onto carbon prepared from sugar beet pulp

2012 ◽  
Vol 20 (4) ◽  
pp. 2472-2483 ◽  
Author(s):  
Arzu Y. Dursun ◽  
Ozlem Tepe ◽  
Gülşad Uslu ◽  
Gülbeyi Dursun ◽  
Yusuf Saatci
Keyword(s):  
Sugar Beet ◽  
Sugar Beet Pulp ◽  
Remazol Black B ◽  
Beet Pulp ◽  
Kinetics Of ◽  
Remazol Black

MODELLING OF HEAT EXCHANGE DURING DRYING OF THE BEET PULP BY SUPERHEATED STEAM OF REDUCED PRESSURE

2018 ◽  
Author(s):  
А.В. ДРАННИКОВ ◽  
А.А. ШЕВЦОВ ◽  
Е.В. КОСТИНА ◽  
А.М. БОРОДОВИЦЫН
Keyword(s):  
Kinetic Equation ◽  
Sugar Beet ◽  
Thermal Energy ◽  
Superheated Steam ◽  
Sugar Beet Pulp ◽  
Convective Drying ◽  
Model Parameters ◽  
Reduced Pressure ◽  
Beet Pulp ◽  
Drying Chamber

Предложено математическое моделирование теплообмена при конвективной сушке свекловичного жома за счет передачи тепловой энергии перегретого пара пониженного давления через поверхность частицы продукта и эндотермического фазового перехода молекул воды из связанного состояния в газообразное. Рассмотрено кинетическое уравнение для изменения температуры частиц, исходя из баланса тепловой энергии. С учетом принятых допущений решение модели сведено к определению зависимости температуры частиц свекловичного жома по высоте слоя от температуры пара пониженного давления. Выполнена идентификация параметров модели по экспериментальным данным и приведена графическая интерпретация результатов моделирования. Модель может быть использована в системе оперативного управления технологическими параметрами процесса сушки свекловичного жома перегретым паром пониженного давления с учетом ограничений на показатели качества высушенного продукта. Mathematical modeling of heat transfer in the convective drying of sugar beet pulp is suggested by transferring the thermal energy of superheated steam of reduced pressure through the surface of the product particle and the endothermic phase transition of water molecules from the bound state to gaseous. When stating the simulation problem, the kinetic equation for changing the temperature of a particle is considered, starting from the balance of thermal energy. Taking into account the assumed assumptions, the solution of the model first reduces to determining the temperature dependence of the particle size of the sugar beet pulp in the height of the layer from the temperature of the steam of the reduced pressure. When drying the sugar beet pulp in a fluidized bed, the temperature of the particles is averaged over the residence time in different parts of the drying chamber, and the kinetic equation is used for the steam temperature in each section of the drying chamber that is resolved relative to the temperature of the particle. Identification of model parameters from experimental data was carried out and a graphic interpretation of simulation results was given. The model can be used in the operational control system for technological parameters of the drying process for sugar beet pulp by superheated steam of reduced pressure, taking into account the limitations on the quality indicators of the dried product.

scholarly journals Research of influence of parameters of process of drying of an apple residue on an exit of pectinaceous substances

2019 ◽  
Vol 80 (4) ◽  
pp. 35-40
Author(s):  
A. V. Drannikov ◽  
S. A. Titov ◽  
D. V. Belomyltseva ◽  
N. N. Korysheva ◽  
D. K. Kostina ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Specific Energy Consumption ◽  
Moisture Stress ◽  
Apple Pomace ◽  
Sugar Beet Pulp ◽  
Biologically Active ◽  
Drying Process ◽  
Reduced Pressure ◽  
Beet Pulp ◽  
Drying Curves

One of the most common methods of preserving apple pomace in order to further obtain products with a high content of biologically active substances is drying. For the experiment, a method of drying with superheated steam of reduced pressure in a pulsed vibro boiling layer was chosen, since it allows improving the quality of the finished product by lowering the temperature of the drying agent, thereby retaining a significant amount of nutrients in the original product. To study the kinetic and hydrodynamic dependences of the drying process, an experimental setup has been developed and created, which allows to obtain the most accurate and reproducible results. According to the results of the experiments done, the drying curves, the drying rate curves and the heating curves were constructed. The technological modes of operation of the drying unit are determined, ensuring a minimum of the specific energy consumption of the drying process and the maximum moisture stress of the drying chamber. In addition to the experiment on drying apple pomace, a study was also conducted on the content of pectic substances in dried pomace. To determine the amount of pectin and protopectin, the calcium-pectate method was used. During the experiment, it was found that with the proposed method of drying, the yield of pectin substances is increased compared with traditional methods. Histograms of the content of pectin and protopectin were constructed depending on the method of drying. A comparative analysis of the content of pectin and protopectin was carried out depending on the drying mode for apple pomace and sugar beet pulp. The conclusion is made about the increased thermolability of protopectin in apple pomace compared to sugar beet pulp.

Obtaining of sorbing material based on sugar beet pulp

2019 ◽  
pp. 10-16
Author(s):  
S.V. Meshcheryakov ◽  
◽  
I.S. Eremin ◽  
D.O. Sidorenko ◽  
M.S. Kotelev ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Sugar Beet Pulp ◽  
Beet Pulp

Kinetic and thermodynamic study of the adsorption of calcium onto sugar beet pulp

2016 ◽  
pp. 565-570
Author(s):  
Huang Qin ◽  
Zhu Si-ming ◽  
Zeng Di ◽  
Yu Shu-juan
Keyword(s):  
Sugar Beet ◽  
Adsorption Equilibrium ◽  
Ph Value ◽  
Hard Water ◽  
Sugar Beet Pulp ◽  
Order Kinetic ◽  
Factors Affecting ◽  
Isotherm Equation ◽  
Equilibrium Data ◽  
Beet Pulp

Sugar beet pulp (SBP) was used as low value adsorbent for the removal of calcium from hard water. Batch experiments were conducted to determine the factors affecting adsorption of the process such as pH value and Ca concentration. The adsorption equilibrium of Ca2+ by the SBP is reached after 100min and a pseudo second-order kinetic model can describe the adsorption process. The initial concentrations of Ca varied from 927 to 1127mgCa2+/L. A dose of 30g/L sugar beet pulp was sufficient for the optimum removal of calcium. The overall uptake of Ca ions by sugar beet pulp has its maximum at pH=8. The adsorption equilibrium data fitted well with the Langmuir adsorption isotherm equation.

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