Vd. Stankovic et al., PRESSURE-DROP BEHAVIOR IN A 3-DIMENSIONAL PACKED-BED CELL DURING COPPER DEPOSITION AND HYDROGEN EVOLUTION, Journal of Applied Electrochemistry, 25(9), 1995, pp. 864-868
Pressure drop in a three-dimensional packed bed electrode cell has bee
n investigated during electrowinning of copper with simultaneous hydro
gen evolution. The presence of gas bubbles in the packed bed electrode
leads to an increase in the pressure drop in the electrolyte flowing
through the cell. This pressure drop increase was in the range of 30 t
o 70% relative to the bubble-free case. Parameters such as current den
sity, electrolyte velocity and particle shape greatly influence the pr
essure drop behaviour. Experimental results are correlated using the E
rgun equation and show satisfactorily good agreement in the investigat
ed range of modified Reynolds number.