Abstract��
Purification of biogas is an important process in the utilization of biogas resources. This paper introduces the composition of biogas in rural areas, and the existing primary metheds and characteristics of the purification of biogas are summarized. At present the purification technology of biogas mainly is to remove carbon dioxide, hydrogen sulphide and water vapor (H2O). Desulphurization technology mainly includes dry desulfurization, wet desulfurization and biological desulfurization, etc., the removal of carbon dioxide mainly have three kinds of method, such as liquid absorption, solid adsorption and membrane separation, and the removal of water vapor in biogas mainly have condensation method, liquid absorption and solid adsorption and so on. In addition, some methods of the removal of siloxane, halogenated hydrocarbons, and nitrogen and other impurities were introduced. With the actual situation, a direction of resource utilization of biogas in rural areas is put forward: According to the different methods of using biogas, a different technology of purification and utilization should be choosen so that biogas can be used efficiently.
LI Fen-Rong, YI Hong-Hong, TANG Xiao-Long, NING Ping, YU Qiong-Fen.Progress in Purification and Resource Utilization of Rural Biogas[J]. Chemcial Industry and Engineering, 2011,28(2): 73-78
2011, Vol. 28 
