id	keyword
brj-22066	lignin
brj-22066	biodegradation
brj-22066	soil
brj-22066	ligniox
brj-22066	et al
brj-22066	biodegradability
brj-22066	carbon
brj-22066	kraft
brj-22066	environment
brj-22066	ref
brj-22066	co2
brj-22066	oxidation