id	keyword
cet-15700	column
cet-15700	growth
cet-15700	cultivation
cet-15700	bubble
cet-15700	vulgaris
cet-15700	chlorella
cet-15700	biomass
cet-15700	photobioreactor
cet-15700	microalgae
cet-15700	nutrient
cet-15700	pbr
cet-15700	scale