As heavy industries face mounting pressure to decarbonize, managing post-combustion emissions and industrial waste remains a dual challenge. Phosphogypsum (PG), a calcium-rich byproduct of phosphate fertilizer production, offers an innovative pathway to address both issues simultaneously through permanent carbon mineralization.
With over 6 billion tons of PG stockpiled globally—and 300 million tons added annually—this underutilized resource contains the ideal chemical composition (calcium sulfate) to mineralize CO₂ at scale. Emerging carbon capture technologies now leverage controlled carbonation processes to transform industrial emissions into stable calcium carbonate, achieving >95% capture efficiency while co-producing high-purity sulfuric acid and ammonium sulfate—critical feedstocks for agriculture and manufacturing. By converting legacy waste into circular economy assets, this approach redefines environmental strategy for sectors such as cement, steel, and chemicals. The integration of PG-based solutions not only aligns with net-zero targets but also turns compliance costs into revenue streams, demonstrating how industrial symbiosis can accelerate climate action without sacrificing productivity and meeting the Paris agreement goals.