id	keyword
brj-23216	et al
brj-23216	straw
brj-23216	methane
brj-23216	production
brj-23216	sludge
brj-23216	pretreatment
brj-23216	article
brj-23216	ffnn
brj-23216	digestion
brj-23216	alrowais et
brj-23216	smo
brj-23216	biogas
brj-23216	methane production
brj-23216	anaerobic
brj-23216	model
brj-23216	samples
brj-23216	bioresources
brj-23216	peer