caa a22 4500 475816390 CHVBK 20180406123811.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1026537208886 doi (NATIONALLICENCE)springer-10.1023/A:1026537208886 Mass transfer behaviour of a flow-by fixed bed electrochemical reactor composed of a vertical stack of screens under single and upward two phase flow [Elektronische Daten] [A.A. Mobarak, M.S.E. Abdo, M.S.M. Hassan, G.H. Sedahmed] Rates of mass transfer were studied at a vertical array of closely packed screens under single and two phase (gas-liquid) flow by measuring the limiting current for the cathodic reduction of ferricyanide ions. Variables studied were screen characteristics (mesh number and wire diameter), physical properties of the solution, solution flow rate, gas flow rate and the effect of surface active agents. The single phase data were correlated by the equation:J = 0.52 Re L -0.55 while the two phase data were correlated by the equations:Sh=0.87 Sc0.33 Re L 0.35 Reg 0.12for the conditions 10 < Re < 125 and 1.4 < Re g < 77; andSh=0.62 Sc0.33Re L 0.11 Reg 0.25for the conditions 1.1 < Re L < 22 and 1.4 < Re g < 77. The presence of surfactant was found to reduce the rate of mass transfer in both single phase and two phase flow, the percentage reduction being higher in the case of single phase flow. Kluwer Academic Publishers, 2000 fixed-bed reactor nationallicence mass transfer nationallicence Mobarak A.A. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut Abdo M.S.E. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut Hassan M.S.M. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut Sedahmed G.H. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/11(2000-11-01), 1269-1276 0021-891X 30:11<1269 2000 30 10800 https://doi.org/10.1023/A:1026537208886 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1026537208886 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mobarak A.A. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- Abdo M.S.E. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- Hassan M.S.M. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- Sedahmed G.H. Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/11(2000-11-01), 1269-1276 0021-891X 30:11<1269 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer