Mechanical, feedstock and thermal energy recovery are all used as processes for recycling but mechanical recycling still seems to be the most common form.
(Mechanical, feedstock and thermal energy recovery; are used; as processes for recycling) (mechanical recycling; seems; T:still) (mechanical recycling; to be; the most common form)
Mechanical, feedstock and thermal energy recovery mechanical recycling mechanical recycling
are used seems to be
as processes for recycling
T:still
the most common form