Abstract
The effect of varying superficial liquid flow velocity, initial acid concentration and temperature upon the rates of sorption of sulphuric acid from simulated nickel-containing plating bath effluent by Wofatit SBW Anion Exchanger were studied by measurement of break-through curves at different flow rates and by an interruption method. The kinetics of sorption are controlled by particle diffusion, and longitudinal diffusion in the column affects the process at velocities up to 5.4 cm min −1. The order of reaction was approximately unity. The mass transfer coefficient was measured and increased with increasing flow rate of the liquid. The activation energy was 12.01 ± 2.34 kJ mol −1.
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