id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-2449		cet-2449		6	.pdf	application/pdf	3291	140	53	Result and discussion Based on the data on technology cost, the cost for AD, PT, compressor (PT to transportation), transportation, and compressor (transportation to utilisation) is calculated and tabulated in Table 4. Sun Q., Li H., Yan J., Liu L., Yu Z., Yu X., 2015, Selection of appropriate biogas upgrading technology - A review of biogas cleaning, upgrading and utilisation, Renewable and Sustainable Energy Reviews, 51, 521-532.	cache/cet-2449.pdf	txt/cet-2449.txt