influence of drying methods on activation energy

Linear and Nonlinear Procedures in Isoconversional

1996-1-24A generalized activation energy equation for torrefaction of hardwood biomasses based on isoconversional methods Renewable Energy 2016 99 1318-1326 DOI: 10 1016/j renene 2016 07 054 Geon-Yong Lee Jun-ll Song Jai-Sung Lee

Influence of Variety and Maturity Level on Natural

2018-8-20fective diffusivity coefficients and the activation energy 2 2 Methods 2 2 1 Experimental Protocol The characterization of the drying kinetics of the local onion varieties was car-ried out through the gravimetric method The drying was performed in an oven with temperatures ranging from 50˚C to 70˚C with a 5˚C step

Effect of osmotic pretreatment on air drying

Air-drying characteristics of fresh and osmotically pretreated (40B 50B and 60B sucrose solutions for 9 h) four pepper cultivars namely Rodo (Capsicum annuum) Shombo (Capsicum frutescens) Bawa (Capsicum frutenscens) and Tatashe (Capsicum annuum) and CIE L*a*b* parameters of air-dried (50 60 70 and 80 C) peppers were investigated Moisture diffusivity and activation energy (E a

TEMPERATURE INFLUENCE ON THE AGARICUS BISPORUS

The total energy consumption is 10 - 15 % of the total energy consumption in all industries but the methods of drying are various using more than 200 types of dryers [10] So many conventional thermal methods including hot-air drying vacuum drying and freeze-drying occur in low drying rates in the falling rate period of drying [11 – 13]

Modeling and Evaluation of Thermal Diffusivity and

2020-5-30In the work being presented the modeling and analysis of thermal diffusivity and activation energy of high moisture potato slices in multi tray solar dryer has been investigated Thin layer drying experiments were conducted on potato slices kept in multi tray cabinet dryer with PCM (Lauric acid) as energy storage system on 14/3/2014 and 24/3/2014 under Indian climatic conditions

Activation energy

The activation energy and rate of a reaction are related by the equation k=Aexp(−E a /RT) where k is the rate constant A is a temperature-independent constant (often called the frequency factor) exp is the function e x E a is the activation energy R is the universal gas constant and T is the temperature This relationship was derived by

Influence of Drying Temperature Water Content and

2018-12-28Influence of Drying Temperature Water Content and Heating a is the activation energy (J/mol) and R is the gas constant (8 314 J/molK) Ea for gelatinization was calculated using two methods involving first-order kinetics proposed by Ozawa

Influence of drying methods on the thermodynamic

Influence of drying methods on the thermodynamic parameters effective moisture diffusion and drying rate of wastewater sewage sludge Author: Ameri Billal Hanini Salah Boumahdi Mouloud Source: Renewable energy 2020 v 147 pp 1107-1119 ISSN: 0960-1481 Subject:

Influence of drying processes on anthocyanin profiles

The Page model was the best model for the drying processes at 30 and 50 C while at 40 C the best model was the Approximation of diffusion model The values of effective moisture diffusivity ranged between 2 58 10⁻ and 4 58 10⁻ m/s and the activation energy was 23 13 kJ/mol

Determination of effective moisture diffusivity and

2020-4-11Effective Moisture Diffusivity and Activation Energy There are many methods to determine drying parameters of which the most common is the Fick's second law of diffusion as shown in Eq (2) (2) The solution of Eq (2) as shown in Eq (3) has been widely used to describe the drying process

Investigating the Influence of Infrared Drying Method

The Linden (Tilia platyphyllos Scop ) is a highly popular herbal plant due to its central nervous system properties In this study thin layer drying kinetics of linden leave samples were experimentally investigated in an infrared (IR) dryer In order to select the appropriate model for predicting the drying kinetics of linden leaves eleven thin layer semi theoretical theoretical and

The Effect of Infrared on Diffusion Coefficients and

The drying characteristics included diffusion coefficient and activation energy were evaluated under the influence of the infrared radiation Tutuncu model was used in order to evaluate the effective diffusion coefficient and activation energies of samples under different values of parameters of temperature and infrared conditions during drying

INFLUENCE OF COMBINED MICROWAVE‐VACUUM

Moisture Diffusivity and Activation Energy The variation of In(MR) against drying time for the tomato slices dried at 200 300 500 and 700 W is shown in Fig 4 In general it was found that the plot of In(MR) against time followed a straight line regression equation with negative slope

Modeling and Evaluation of Thermal Diffusivity and

2020-5-30In the work being presented the modeling and analysis of thermal diffusivity and activation energy of high moisture potato slices in multi tray solar dryer has been investigated Thin layer drying experiments were conducted on potato slices kept in multi tray cabinet dryer with PCM (Lauric acid) as energy storage system on 14/3/2014 and 24/3/2014 under Indian climatic conditions

Effects of drying temperature on the effective

"Influence of Drying Conditions on the EffectiveMoisture Diffusivity Energy of Activation and Energy Consumption during the Thin-layer Drying of Beriberi Fruit(Berberdaceae)" Energy Conversion and Management 49: 2865-2871Akpinar E K and Bicer Y ( 2006) "Mathematical Modeling and Experimental Study on Thin-layer drying

Drying Technology: An International Journal

2019-11-183 Drying models based on reaction engineering approach (REA) [8-10 16 22-26] The main theory of the model considers the drying as an activation process in which an energy barrier has to be overcome for moisture removal to occur In the mathematical expression of the model the vapor concentration gradient is considered the driving force for the

Influence of Drying Temperature Water Content and

2018-12-28Influence of Drying Temperature Water Content and Heating a is the activation energy (J/mol) and R is the gas constant (8 314 J/molK) Ea for gelatinization was calculated using two methods involving first-order kinetics proposed by Ozawa

Effect of Temperature and pH on Early Hydration Rate

In order to investigate the effect of temperature and pH on the early hydration rate of alkali-activated slag (AAS) NaOH was used as alkali activator and the nonevaporable water (NEW) content of the slag paste at different temperatures (5 20 and 35C) and pH (12 10 12 55 13 02 and 13 58) was measured On the basis of the Arrhenius formula the hydration rate of slag was characterized by

Influence of drying methods on activation energy

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Influence of Blanching Pretreatment on the Drying

Abstract The hot air drying with blanching pretreatment may provide a practical method for the production of dried cherry tomatoes The influences of drying temperature (50C 60C 70C and 80C) and blanching on the drying kinetics of cherry tomatoes were studied Nine mathematical models were evaluated and the determination of coefficient ( R 2 ) chi-square ( χ 2 ) and root mean

Mathematical Modeling on Hot Air Drying of Thin

The hot convective drying of fresh tilapia fillets was evaluated in a heat pump dryer The influence of the drying temperature (35 45 and 55C) hot air velocity (1 50 2 50 and 3 50 m/s) and thickness (3 5 and 7 mm) of the tilapia fillets on the moisture ratio and drying rate has been studied It shows that drying process took place in falling rate periods

Characterization and the Kinetics of drying atthe

Characterization and the Kinetics of drying atthe Drying oven and with Microwave oven of the Nephelium lappaceum Seeds Aghfir A Akkad S Rhazi1 M Kane CSE Kouhila M 2008 Determination of the diffusion coefficient and the activation energy of the mint during continuous conductive drying Renewable a Energy Review