MICROWAVE DRYING OF ALOE VERA (ALOE BARBADENSIS MILLER): MATHEMATICAL MODELING, KINETICS AND MASS TRANSFER ASPECTS
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2016, Vol 12, Issue 22
Abstract
Aloe vera has extensive application in food and pharmaceutical industry in fact contains 97 percent of water. It’s perishable in nature and poor shelf life makes it essential to study the drying characteristics of aloe vera. The objective of this present study is to investigate the effect of different microwave (MW) respective power levels (180 , 360 ,540 , 720 and 900 Watts ) regarding the moisture ratio (MR), drying rate (DR), effective moisture diffusivity (EMD), specific energy consumption (SEC) and drying efficiency (DE) of aloe vera. The drying process took 70 - 26 .5 minutes for attainment of equilibrium moisture content. A mathematical model done by Midilli et al. is considered to be the best and most suitable for a drying conditions among the various thin layer models. The effective moisture diffusivity value at 180 Watts (W) of MW power was found as 4.5 × 10-8 m2/sec. while it was raised to 9.45 x10-7 m2/sec at 900 W in this study. Lowest energy consumption 1.4 MJ/Kg water and maximum drying efficiency occurred at higher microwave power level 900 Watts due to less drying duration (time).
Authors and Affiliations
G. Srinivasan, R. Baskar
Keywords
Related Articles
- EP ID EP653028
- DOI 10.24297/jac.v12i22.120
- Views 132
- Downloads 0
Decomposition of NOx and PM emission in Diesel Exhaust by Electrochemical reactor with Multilayered Electrodes
NOx emissions are highly poisonous and reactive gas liberated excessively from diesel engines. This work attempts to decrease NOx emissions by developing electrochemical reactor. The electrochemical reactor consists of e...
TUNED BACTERIAL FORAGING ALGORITHM FOR FACE RECOGNITION TECHNIQUE
This article presents an efficient face recognition technique with the optimal selection of components through Bacterial Foraging Algorithm (BFA) based on Support Vector Machines (SVM). The shortcomings in the field of r...
Stability Analysis of Uncertain Temperature control system with two additive delays and nonlinear perturbation
In this paper, the problem of robust delay-dependent stability criterion is considered for a class of linear continuous time heat exchanger system with constant additive state-delays and bounded nonlinear perturbations u...
Influence of green tea extract on corrosion of different metals in 0.5 mol dm-3 NaCl solution
The corrosion behavior of copper, aluminum and stainless steel AISI 316L in 0.5 mol dm-3 NaCl solution without and with the addition of an aqueous-ethanol extract of green tea leaves at a temperature of 25°C was investig...
Optimization of laser welding of tri – metal joint via response surface methodology
 Laser welding input parameters play a major role in determining the quality of a weld joint. In the nuclear power plants, hybrid structures of nickel and steel alloys offer an advantage in comparison to conventional ma...