id	keyword
brj-24134	fermentation
brj-24134	production
brj-24134	biogas production
brj-24134	et al
brj-24134	fermentation process
brj-24134	anaerobic
brj-24134	manure
brj-24134	straw
brj-24134	fermentation biogas
brj-24134	production rate
brj-24134	bacteria
brj-24134	fig
brj-24134	temperature
brj-24134	hydrogen
brj-24134	hydrogen production
brj-24134	liquid
brj-24134	liu
brj-24134	materials
brj-24134	fermentation temperature
brj-24134	anaerobic fermentation
brj-24134	ratio
brj-24134	article