Plant to recycle trash with partial decarbonisation (6)
I believe the answer is:
celery
'plant' is the definition.
(celery is a kind of plant)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for celery that I've seen before include "Salad veg" , "Expedition" , "Aromatic leaf stalks, raw or cooked" , "Leafstalks eaten as a vegetable" , "The crunch matter for slimmer" .)