AE-PP31Recovery of cobalt using an electrogenerative process in a static batch cell

来源 :第13届亚洲化学大会(13th Asian Chemical Congress) | 被引量 : 0次 | 上传用户:liongliong483
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  Almost 70 % of the world cobalt is recovered by hydrometallurgical route where the electrowinning process is the final step.This electrowinning process is not cost effective for treating the dilute solutions with low metal ion concentrations.In this work, the electrogenerative process (galvanic process) for the recovery of cobalt is introduced as an alternative to the electrowinning process.This process does not require an external supply of current due to the spontaneous galvanic reaction between cobalt/zinc couple.Results obtained show that reticulated vitreous carbon (RVC) serves as a suitable cathode material with more than 99 % of cobalt recovered after 10 h of operation with an initial 200 mg L-1 Co(Ⅱ) solution at pH 4.0 in 0.1M Na2SO4 and 0.4 M boric acid.SEM-EDX and XRD analyses are performed to confirm the presence of cobalt on the cathode materials.
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