Study on the Kitchen Residues and Cattle Manure Anaerobic Co-Digestion in Bench-Scale Laboratory Test

Abstract:

With kitchen residues and cattle manure as raw materials, in temperature (36±1°C) adopt the way of the batch type fermented for kitchen residues and cattle manure, we will have a comparative research between independent anaerobic fermentation and mixed anaerobic fermentation. The results of the experiments show that the gas production and COD removal rate by the anaerobic fermentation of cattle manure independent would be superior to kitchen residues, the optimal effect is the anaerobic fermentation of kitchen residues mixed with cattle manure in all aspects .In this experiment all the kitchen residues are rice, vegetables, meat, eggs and other food all that have been after cooked, containing a large number of fat and salt, such condition is not suitable for the growth of microorganism. The time of gas production is only nine days and gas production rate is extremely low, only 1500ml accumulative gas production, But cattle manure’s accumulative gas production is 3028ml, COD removal rate was 21%, COD removal rate by mixed anaerobic fermentation of kitchen residues and cattle manure can achieve 60.92%.

• Periodical: Applied Mechanics and Materials (Volumes 260-261)
• Pages: 621-626
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.260-261.621
• Online since: December 2012
• Authors: Xin Ke, Xin Zhao, Ying Sun, Yun Zhang
• Keywords: Anaerobic Fermentation, Cattle Manure, Kitchen Residues

References

[1] Rongling Li, Yajun Ge, Kuisheng Wang, el al. Characteristics and anaerobic digestion performances of kitchen wastes [J] RENEWABLE ENERGY RESOURCES, 2010, 28 (1): 76-77.

[2] Dejing Liu, Funiang Zhang, Taoyu Qiu. Effect of Different Cow Dung Concentrations on CH4 and H2S Content in Produced Biogas [J]. CHINA BIOGAS, 2009, 8(1): 23-24.

[3] Rongping Li, Xiujin Li. Effect of Mixing Ratio of Dairy Manure and Kitchen Waste on Anaerobic Digestion [J]. RENEWABLE ENERGY RESOURCES, 2007, 25(5): 19-20.

[4] AMERICAN PUBLIC HEALTH ASSOC. Stand methods for the examination of water and waste water [M]. Wastington DC: Science publisher, (1998).

[5] Mingxian Zhao, Qiu Yan WenquanRuan, el al. The influence of pH adjustment on biogas production from kitchen wastes by anaerobic fermentation pH [J]. CHINESE JOURNAL OF BIOPROCESS ENGINEERING, 2008, 6(4): 45-49.

[6] Bo Zhang, Hongzuhan Shi, Lili Zhang, et al. The influence of pH on hydrolysis and acidogenesis of kitchen wastes in two-phase anaerobic digestion [J]. ACTA SCIENTIAE CIRCUMSTANTIAE, 2005, 25(5): 666.

DOI: 10.1080/09593332608618563

[7] Rao M S, Singh S P. Bioenergy eonversion studies of organic fraction of MSW: kinetics studies and gas yield-organic loading relationships for process optimization [J]. Bioresource Technology, 2004, 95(2): 173-185.

DOI: 10.1016/j.biortech.2004.02.013