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Electrochemical removal of cadmium using a batch undivided reactor with a rotating cylinder electrode

✍ Scribed by Javier M Grau; José M Bisang

Publisher
Wiley (John Wiley & Sons)
Year
2001
Tongue
English
Weight
916 KB
Volume
76
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

The performance of an undivided electrochemical batch reactor with a rotating cylinder electrode under potentiostatic control is examined for the removal of cadmium from a sodium sulfate solution containing 500 ppm Cd(II) at pH ≅ 7. The effect of hydrogen evolution as a side cathodic reaction on the figures of merit of the reactor is analysed. The best results were obtained for a cathode potential of −0.9 V against the saturated calomel electrode. With an angular velocity of 1500 rpm the space time yield and the normalized space velocity were 0.66 mol m^−3^ s^−1^ and 3.9 h^−1^ respectively, while the fractional conversion was 67.3% with a current efficiency of 66.7%. The surface morphology of the deposits as a function of the applied potential is also reported.

© 2001 Society of Chemical Industry

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