Edited by Kai Heuer, Wismar University, Germany Chayanan Kerdpitak, IBEST Conference & Publication, USA Nitaigour Premchand Mahalik, California State University, Fresno, USA Bob Barrett, American Public University, USA Vipin Nadda, University of Sunderlan
This study focused on the emission of greenhouse gases (GHGs) from livestock farming in Chachoengsao Province, Thailand. Two objectives were (1) to investigate the concentration of CO2 and CH4 emitted from wastewater systems in swine farms, (2) to compare the concentration of these greenhouse gases emitted from different wastewater treatments of swine farms which were anaerobic filter tank system and stabilization pond system, and (3) to indicate the relationship between the concentration of CO2 and CH4 emitted from wastewater systems in swine farms. A number of twelve swine farms were selected as the sample of this study in which six of them represented the farms having anaerobic filter tank system and the rest represented the farms with stabilization pond system as their wastewater treatment plants. Statistical methods used to analyze data were mean (X), minimum, maximum, independent – samples test (t – Test) and Pearson correlation coefficient (r) at the significant level of 95%. Results of the study showed that (1) the concentration of CO2 emitted from anaerobic filter tank and stabilization pond system varied widely between 57.0 to 5,545.0 and 2,755.0 to 28,662.0 ppm., respectively. In the same manner, the concentration of CH4 also varied widely between 11.3 to 5,924.0 from anaerobic filter tank system and 1,500.0 to 15,620.2 ppm. from stabilization pond system; (2) the emission of CO2 and CH4 from anaerobic filter tank system and stabilization pond system were statistically different at the significant level of .01 [Sig. = .007 and .009 < α (.01)]. Besides, the study indicated that relationship between the concentration of CO2 and CH4 was at a very high level with the correlation coefficient (r) of 0.925. It means that the concentration of these two greenhouse gases will change in the same direction. That is, if the concentration of CO2 increase, the concentration of CH4 will also increase, and vice versa.