화학공학소재연구정보센터
Desalination, Vol.167, No.1-3, 127-133, 2004
Recovery of copper from industrial waste solution by cementation on reciprocating horizontal perforated zinc disc
Rates of Cu++ removal from waste solutions by cementation on a perforated reciprocating zinc disc were studied under different conditions of frequency and amplitude of oscillation. Disc pulsation was found to increase the rate of cementation by a factor ranging from 2.8 to 5.5 compared to cementation on stagnant disc, initial Cu++ concentration, temperature, disc diameter and hole diameter. The effect of temperature was found to fit Arrhenius equation with an activation energy of 2.95 kcal/mole which confirms the diffusion controlled nature of the reaction. Mass transfer study of the process has revealed that the data fit the dimensionless equation Sh = 89 Sc-0.33.Re-0.537(d/d(h))(-0.496). The importance of using the above equation in the design and operation of high productivity cementation reactor was pointed out.