PROCESS FOR REMOVING FLUORIDE IONS FROM A CONTAMINATED AQUEOUS SOLUTION AND A SUPPLY OF WATER CONTAMINATED WITH FLUORIDE IONS and APPARATUS FOR REMOVING FLUORIDE FROM AN AQUEOUS SOLUTION CONTAMINATED WITH FLUORIDE IONS

摘要

PROCESS TO REMOVE FLUORIDE ICONS FROM A CONTAMINATED WATER SOLUTION AND FROM A SUPPLY OF WATER CONTAMINATED WITH FLUORIDE ICONS AND APPLIANCE TO REMOVE FLUORIDE FROM A CONTAMINATED WATER SOLUTION WITH FLUORIDE ICONS. A process for removing fluoride ions from an aqueous solution contaminated with fluoride ions and an apparatus used to carry out the process are described, both of which use modified alumina particles. The modified alumina particles contain alumina complexed with iron or manganese, or both.