At some point I expect blades will be made from thermoplastic composites, not thermosets. Then it will just be a matter of melting the blades to recycle them. A

At some point I expect blades will be made from thermoplastic composites, not thermosets. Then it will just be a matter of melting the blades to recycle them. A lot is happening in that area at least, thermoplastics for airplanes are very actively researched