Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7704111 | Ultrasonics Sonochemistry | 2015 | 6 Pages |
Abstract
The effect of ultrasound pre-treatment on the drying kinetics of brown seaweed Ascophyllum nodosum under hot-air convective drying was investigated. Pretreatments were carried out at ultrasound intensity levels ranging from 7.00 to 75.78Â WÂ cmâ2 for 10Â min using an ultrasonic probe system. It was observed that ultrasound pre-treatments reduced the drying time required. The shortest drying times were obtained from samples pre-treated at 75.78Â WÂ cmâ2. The fit quality of 6 thin-layer drying models was also evaluated using the determination of coefficient (R2), root means square error (RMSE), AIC (Akaike information criterion) and BIC (Bayesian information criterion). Drying kinetics were modelled using the Newton, Henderson and Pabis, Page, Wang and Singh, Midilli et al. and Weibull models. The Newton, Wang and Singh, and Midilli et al. models showed the best fit to the experimental drying data. Color of ultrasound pretreated dried seaweed samples were lighter compared to control samples. It was concluded that ultrasound pretreatment can be effectively used to reduce the energy cost and drying time for drying of A. nodosum.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Shekhar U. Kadam, Brijesh K. Tiwari, Colm P. O'Donnell,