id	keyword
brj-22712	cce
brj-22712	lignin
brj-22712	cellulose
brj-22712	hemicellulose
brj-22712	content
brj-22712	acid
brj-22712	pulp
brj-22712	treatment
brj-22712	biomass
brj-22712	concentration
brj-22712	doi