id	keyword
brj-23345	et al
brj-23345	wastewater
brj-23345	removal
brj-23345	biochar
brj-23345	rice
brj-23345	husk
brj-23345	biofilm
brj-23345	mg·l-1
brj-23345	sludge
brj-23345	nh4
brj-23345	doi
brj-23345	husk biochar
brj-23345	sbr