Abstract
Removal of hexavalent chromium by an electrochemical process using a carbon felt electrode in a flow-through electrochemical cell was studied. Optimum operating conditions, such as pH and current density were investigated. It was found that at pH 3.5, current density 400 A m−2 and flow velocity of 1.11 cm s−1, the total chromium and Cr(VI) concentrations can be reduced to less than 5 mg l−1 within 230 min operation for 5 l of solution with an initial concentration of 50 mg l−1. It was found that the solution pH is a critical factor for the chromium removal process. To achieve high chromium removal efficiency, pH and current density must be carefully controlled.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J.W. Patterson, ‘Industrial Wastewater Treatment Technology’ (Butterworth, Boston, 1985).
I.C. Agarwal, A.M. Rochon, H.D. Gesser and A.B. Sparling, Water Res. 18 (1984) 227.
A.F. Diaz and D. Schermer, J. Electrochem. Soc. 132(1985) 2372.
I.M. Kolthoff and A.M. Shams, J. Phys. Chem. 60 (1956) 1564.
G. Lindbergh and D. Simonsson, J. Electrochem. Soc. 137 (1990) 3094.
G. Isserlis,in A.T. Kuhn (Ed.), ‘Industrial Electrochemical Processes’ (Elsevier, New York 1971).
D. Golub and Y. Oren, J. Appl. Electrochem. 19 (1989) 311.
S. Reussard, J.F. Benezech and G. Lacoste, in ‘Electrochemical engineering and the environment 1992’, IChemE Symposium Series 127 (1992) 97.
M.S.E. Abdo and G.H. Sedahmed, Energy Convers. Manage. 39 (1998) 943.
N. Kongsricharoen and C. Ploprasert, Wat. Sci. Tech. 34 (1996) 109.
K.N. Njau and L.J.J. Janssen, J. Appl. Electrochem. 29 (1999) 411.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Roberts, E., Yu, H. Chromium removal using a porous carbon felt cathode. Journal of Applied Electrochemistry 32, 1091–1099 (2002). https://doi.org/10.1023/A:1021282015050
Issue Date:
DOI: https://doi.org/10.1023/A:1021282015050