Abstract
This study presents an efficient and sustainable procedure for converting phosphogypsum (PG) waste, along with hydrofluoric acid (HF) and ammonia (NH3), into valuable materials. The results obtained demonstrate the high efficiency of this proposed procedure, resulting in the synthesis of relatively pure calcium fluoride (CaF2) nanoparticles and ammonium sulfate ((NH4)2SO4). The latter is recommended for agricultural use as a fertilizer, while the obtained CaF2 can be utilized in the metallurgical industry. Furthermore, this procedure not only offers a solution for reducing fluorine gas emissions and managing PG waste but also contributes to the conservation of fluorite reserves.
Disclosure statement
No potential conflict of interest was reported by the author(s).