id	keyword
easat-2843	temperature
easat-2843	biogas
easat-2843	digester
easat-2843	vol
easat-2843	slurry
easat-2843	energy
easat-2843	heat
easat-2843	production
easat-2843	doi
easat-2843	greenhouse
easat-2843	ambient
easat-2843	anaerobic
easat-2843	technology
easat-2843	digestion
easat-2843	yield