The objective of this study was to determine the drying behavior of 2-phase olive mill waste (2POMW) under isothermal microwave-convection drying conditions. 2POMW samples were dried in a thin layer in a variable-power pilot microwave oven with impinging air, using a feedback controller to maintain sample temperature at one of four levels. Moisture loss and shrinkage of the samples were recorde...

This paper discusses the modeling of unsteady-state mass diffusion under concentrationdependent diffusivity through an orthotropic medium. Historically, a simpler one-dimensional formulation with constant medium properties has been used, leading to approximate solutions. The present work uses a finite element formulation with finite difference discretization in time. The code includes an elemen...

The thin-layer behavior of by-products from olive oil production was determined in a solar dryer in passive and active operation modes for a temperature range of 20-50 °C. The increase in the air temperature reduced the drying time of olive pomace, sludge and olive mill wastewater. Moisture ratio was analyzed to obtain effective diffusivity values, varying in the oil mill by-products from 9.136...

Calcium carbonate is a versatile mineral with diverse industrial applications. Drying is a necessary processing step in preparation of calcium carbonate product. Deep knowledge of drying kinetics is required in order to design an appropriate dryer. The main aim of the present study was to investigate the drying kinetics of calcium carbonate, experimentally. Thirteen empirical correlations with ...

Abstract Epoxy resins are prone to serious moisture absorption inspite of their inherent advantages, which can be mitigated by the incorporation montmorillonite nanoclay that provide tortuous path flow moisture. Moisture studies epoxy clay nanocomposites is carried out, analyse effect content, immersion media and temperature. Nanocomposites prepared in 0.5, 1 1.5 wt% using magnetic stirring ult...

modeling of drying kinetics of canola was studied at 30 to 100 ?c in a lab scale fluidized bed dryer. drying rate of the crop was assessed, using many conventional moisture ratio models employed in food science. effective diffusivity coefficient (deff) and activation energy (ea) of kernel moisture were determined using fick's law of diffusion and arrhenius equation. besides, the effects of...

In this study, the effects of microwave power, vacuum degree and load weight on moisture content seedless white grapes (Vitis vinifera L.) during drying were investigated. The result found that drying, effective diffusivity (Deff) ranged between 1.0232 × 10−9 4.6354 m2/s. Deff values increased with increase in power decrease weight, played a relatively minor role. kinetics ratio time establishe...

Researching the thermal characteristic parameters of alfalfa is fundamental importance for accurately measuring heat transfer and distribution during compression process. Therefore, were measured using transient plane source method. Additionally, study examined impact moisture content particle size on alfalfa. The experimental results indicated that conductivity increased with higher content, i...

The use of agro-industrial residues are currently experiencing an undeniable revival interest in developing fully renewable insulation materials, that can be competitive price and performance, addition low embodied energy. Among these vegetable waste materials; wood chips. These latter light, compressible very sensitive to water, due their highly porous structure, which constantly modifies ther...