id	keyword
brj-22156	et al
brj-22156	doi
brj-22156	bio
brj-22156	production
brj-22156	pet
brj-22156	review
brj-22156	ethylene
brj-22156	biomass
brj-22156	process
brj-22156	article
brj-22156	fdca
brj-22156	plastic
brj-22156	meg
brj-22156	mendieta
brj-22156	recycling
brj-22156	pef
brj-22156	mendieta et
brj-22156	journal
brj-22156	polyethylene
brj-22156	chemical
brj-22156	bioresources