id	keyword
ajst-22360	coal
ajst-22360	production
ajst-22360	gas
ajst-22360	waste
ajst-22360	anaerobic
ajst-22360	ck-1
ajst-22360	digestion
ajst-22360	kitchen
ajst-22360	gas production
ajst-22360	fermentation
ajst-22360	food
ajst-22360	groups
ajst-22360	pore
ajst-22360	organic