Digestion Process of Lemon Marc

By use of the self-designed fermentation device, a research was made into the influence of temperature on the VFA and gas production in the process of Lemon Marc anaerobic digestion. The experiments show that, under the two conditions when the digestive temperature was set at 35℃(medium temperature) and at 55℃(high temperature) and the pH value close to neutral, lemon Marc digestion reactor started the methanogenic phase on the seventh day and the fifth day respectively， and the maximum gas production reached 44ml and 46ml respectively. The gas production increased by 4.5% at high temperature than at the medium temperature. Thus, the high temperature digestion decreases time for digestion, and helps increase gas production, and proves to be an effective way to increase gas production in the process of anaerobic digestion of lemon Marc.