There exists, worldwide, a strong incentive for the development of efficient processes that permit the recovery of Cl-2 from HCl waste byproducts, to avoid the need for disposal of this toxic and corrosive material. In this paper we will describe such a process that has been developed by our group and which is currently being tested at the pilot plant scale. The process uses a salt mixture impregnated on a high surface area support alternately chlorinated and oxidized in two fluidized-bed reactors in series. The process development included basic studies of the mechanism of the HCl oxidation reaction over a broad range of temperatures (25-400 degrees C) and pressures (10(-5) Torr, 1 atm). This paper will present an overview of the results of these studies. On the basis of these investigations, a preliminary economic evaluation was completed and a pilot-plant-scale unit was designed and constructed.