Abstract
Abstract Recovery of cadmium in wastewater was investigated by an electrochemical deposition approach in a multianode and multicathode cell in this study. The effects of initial concentration, initial pH, current density, and complexing agents on the recovery of cadmium were examined. Acidic media was found to improve the recovery efficiency. When the current density was 4.46 mA cm−2, the mass was almost increased to be maximum after electrochemical deposition for 90 min. With further increase in current density, little increase of recovery ratio was observed. Presence of aqueous ammonia increased the deposition rate. X-ray diffraction (XRD) analysis demonstrated that the deposits were composed of cadmium and cadmium hydroxide.
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