Electrochemical Arsenic Immobilization for Sustainable Cobalt Production
ENERGY, DEPARTMENT OF
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Technology Summary This technology introduces an electrochemical method for extracting cobalt from sulfoarsenide minerals, such as cobaltite (CoAsS), while simultaneously immobilizing arsenic as scorodite (FeAsO?�2H?O), a stable and low-solubility mineral form. The process enables cobalt production from arsenic-rich domestic sources by addressing both metal recovery and arsenic stabilization in a single system. The method operates at moderate temperatures (up to 70�C) and under ambient pressure conditions, without the need for chemical oxidants or high-pressure equipment. Challenge Domestic sources of cobalt remain largely untapped due to the presence of arsenic, which complicates extraction and disposal. Existing approaches to arsenic immobilization are energy-intensive, require high-pres...