
Keywords: حداقل تفاوت قابل توجهی; ANOVA; analysis of variance; BSP; British standard pipe thread; CAP; covered anaerobic pond; CH4; methane; CO2; carbon dioxide; DN; nominal diameter; FRP; fibre-reinforced plastic; GHG; greenhouse gas; H2S; hydrogen sulphide; kWe; kilowatt (electric); LSD