1Margareta PERSSON, Owe JONSSON, Arthur WELLINGER. Biogas upgrading to vehicle fuel standards and grid injection [EB/OL]. http://www.iea-biogas.net/Dokumente/upgrading_report_ final.pdf.
2Jensen J K, Jensen A B. Biogas and natural gas fuel mixture for the future [EB/OL]. http: //www. dgc. eu/ pdf/Sevilla2000.pdf.
3Hagen M, Polman E, Jensen J, et al. Adding gas from biomass to the gas grid. 144. Malmr[R], Sweden: Swedish Gas Center, 2001.
4杨世关,李继红,李刚.气体生物燃料技术与工程[M].上海:上海科学技术出版社,2013.
5Marco Aurrlio dos Santos Bernardes. Biofuel's Engineering Process Technology[M]. In Tech, 2011.
6Cavenati S, Grande C A, Rodrigues A E. Upgrade of methane from landfill gas by pressure swing adsorption[J]. Energy & Fuels, 2005, 10(6): 2545-2555.
7Cavenati S, Grande C A, Rodrigues A E. Adsorption equilibrium of methane, carbon dioxide and nitrogen on zeolite 13X at high pressures[J]. J Chem Eng Data, 2004, 49(4): 1095- 1101.
8Cavenati S, Grande C A, Lopes F V S, et al. Adsorption of small molecules on alkali-earth modified titanosilicates[J]. Microp Mesop Mater, 2009, 121(1/2/3): 114-120.
9Bao Z, Alnemrat S, Yu L, et al. Kinetic separation of carbon dioxide and methane on a copper metal-organic framework[J]. Journal of Colloid and Interface Science, 2011,357(2): 504-509.
10Xue Q, Liu Y. Mixed-amine modified SBA-15 as novel adsorbent of CO2 separation for biogas upgrading[J]. Separation Science and Technology, 2011, 46(4): 679- 686.