Semi-empirical equations for fluid flow through packed bed have been proposed, depending on statistical fitting of experimental data. Two types of fluids have been used (water and air) separately (single phase flow). Several size distributions of sphere packing materials have been used in the packed bed, and each had been studied separately.Different parameters affecting the pressure drop of fluid flow through
Mechanical shear degradation hampers the practical usage of polymers for turbulent drag reduction application.
In this work, it was attempted to study the kinetic of vanadium recovery from fly ash residue by leaching with NaOH solution from previous work of Mosa (1999).The selected data was chosen when particle size of fly ash were 125, 150 and 200 µm, temperature 343, 353 and 373 K, reaction (leaching) time from 1 to 8 hours and at almost constant concentration of NaOH solution (molarity 3, 3.5 and 4 M).The results showed that vanadium recovery increased with time and temperature and decreased with particle size.A second degree polynomial mathematical correlation was e
