as well as the exact solution of th

as well as the exact solution of the original partial
differential equation. Results show that the P. A. method’s predictions followed the general trend of the experimental
dehydration curves. Also dehydration curves show a good agreement between the P. A. and exact analytical method’s
predictions. The values of mean relative errors between the P. A. method’s predictions and experimental data are
between 14 and 24%. Also the related mean relative errors for exact analytical method are between 10 and 27.5%.
Although the exact analytical solution provides better results, as expected, but considering the approximate nature
of the P. A. method and in view of the fact that the deviations of P. A. and the exact analytical methods from the
experimental data are comparable, the P. A. method could be used because of its simplicity.