“To make the powder, we used a sol-gel method with a polymer template to prepare a composite of calcium silicate and hydroxyapatite with submicron-sized pores.” On sintering, the powder turns ...

This caused the minerals to swap ions and form magnesium oxide and calcium silicate—two highly reactive materials that absorb CO₂ much faster. “The process acts as a multiplier,” Kanan ...

Specialized powder fashioned primarily from calcium silicate is added to the water. It is then reportedly dehydrated and dried to recover the phosphorus as calcium phosphate. The recovery is ...