2Liao W , Liu Y , Liu C B . Acid hydro-lysis of fibers from dairy manure[J]. Bioresoureee Technology, 2006, 97(14) :1687-1695.
3Abouelenien F, Fujiwara W, Namba Y, et al. Im proved methane fermentation of chicken manure via am monia removal by biogas recycle-J3. Bioresource Tech nology, 2010, 101(16): 6368-6373.
4Marti-Herrero J , Chipana M , Cuevas C , et al. Low cost tubular digesters as appropriate technology for wide- spread application: results and lessons learned from Bo- livia. Renewable Energy, 2014,71 : 156 - 165.
5Terradas-Ill C H, Pham C H, Triolo J M, et al. Ther- mic model to predict biogas production in unheated fixed- dome digesters buried in the ground. Environ. Sci Tech- nol, 2014, 48: 3253-3262.
6Marti-Herrero J, Alvarez R, Cespedes R, et al. Cow, sheep and llama manure at psychrophilic anaerobic co-di- gestion with low cost tubular digesters in cold climate and high altitude-J3. Bioresource Technology, 2015, 181:238-246.
7Castril16n E , Marafi6n L , Ferndndez-Nava Y , et al. Thermophilic co-digestion of cattle manure and food waste supplemented with crude glycerin in induced bed reactor (IBR) (J3. Bioresource Technology, 2013,136: 73-77.
