One-step whitening and deleterious elements (P, F) removal from phosphogypsum by heat-activated persulfate oxidation

Key Points

• Effective removal of deleterious elements like phosphorus and fluorine is achieved through persulfate oxidation.
• Results indicate a significant reduction of harmful substances in phosphogypsum, with oxidative processes being central to this improvement.
• Analysis of the oxidation process reveals that heat activation enhances the efficiency of persulfate in removing contaminants.
• These findings support the potential for safer usage of phosphogypsum in various industrial applications.