The Effects of Different Anaerobic Fermentation Temperature on Biogas Fermentation of Swine Manure

Abstract

Biogas yields and methane productivity were studied at different temperatures (15¡æ, 20¡æ, 25¡æ, 30¡æ and 35¡æ) by the way of anaerobic fermentation experiment which takes wine manure as biogas fermentation raw material, and take the sediment from rural methane fermentation as inoculate matter. The results indicated that temperature affected the material consumption time, the higher temperature, the faster material consumption, and then, fermentation period was become shorter too. However, more gaseous impurities were produced when anaerobic fermentation temperature increased relatively. Temperature of anaerobic fermentation had a great influence on methane production. Low temperature goes against the production of methane. Biogas yield and methane yield can ascend to the peak quickly at high anaerobic fermentation temperature. Taking into account production efficiency and the quality of digestion, temperature condition of 30 and fermentation period of 31d ¡æ in swine manure anaerobic fermentation are suitable for large scale farms.