Abstract
The growing worldwide concerns over environment, health and monetary aspects have triggered a search for efficient and economic renewable sources of ene rgy production. Agricultural sector holds the potential for development of one of the major sourc e of renewable energy such as biogas. In this study , CSTR-small scale fermentation (200 L stainless stee l) was studied to observe the effect of stirring fo r natural water, cow dung, rice straw and water hyaci nth ratio (2:1:1:1), which there are suitable of C: N ratio at 31.1: 1on the biogas and methane productio n at ambient temperature (31°C), 6.7-7.2 and 6.7-7. 8 of pH for with/without stirring digester, respectiv ely, for 52 days. The result showed that the biogas production increased progressively with stirring di gester. The maximum biogas production and methane concentration was 98.56 L/days and 64.07% was obtained at stirring digester. This gave an increase of 7.56 over without stirring digester. Thus, agitatio n of digester can be used effectively as an operati ng strategy to optimize biogas production.
Highlights
Energy issues and global warming is a major 2012 totaled 2,663 million tons of oil equivalent, up problem in the world
The cow dung used in the experiments contained relatively high solid content
Initial concentration of COD and NH3-Nof cow dung were at higher value
Summary
Energy issues and global warming is a major 2012 totaled 2,663 million tons of oil equivalent, up problem in the world. 40 years and natural gas within 60 years that it is the totaled 9,744 million tons of oil equivalent Year 2011. Data from the Electricity Generating Authority of Totaled 9, 910 million tons of oil equivalent, up Thailand.Thailand's oil consumption increased 3.9% 1.7%. The burning production totaled 1,305,530 million cubic feet, or an of fossil fuels. It is as ever negative impact on the average of 3,577 million cubic feet per day which is environment. As the cause of the observed imports in the year 2011 totaled 39,637 million tons of global warming of the earth’s temperature is rising. Corresponding Author: KanokornHussaro, Rattanakosin College for Sustainable Energy and Enviroment, Rajamangala University of Technology Rattanakosin, Puthamonthon Sai 5, Salaya, Puthamonthon, NakhonPathom, 73170, Thailand
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