Method for producing biogas from vinasse by high-temperature anaerobic fermentation
A technology for high-temperature anaerobic fermentation and biogas production, which can be used in fermentation, waste fuel, biological sludge treatment, etc.
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specific Embodiment approach 1
[0039] Specific implementation mode 1: as attached figure 1 , first accurately weigh 300g of distiller's grains, transfer it to a 2000ml conical flask, then add 245ml of inoculum, add water to the 1500ml of the conical flask, stir evenly, adjust the pH to 8.02 with 1mol / L NaOH solution, and put a plug on it Use a glue gun to seal the connection between the rubber stopper and the Erlenmeyer flask, connect the air guide pipe to the gas collection device, and place the Erlenmeyer flask in a shaker at 55°C, with the shaker speed set at 120rpm , set to shake 3 minutes per hour. Do three sets of repetitions. A blank test was performed with a fermentation broth containing only the inoculum and water. The amount of biogas produced is recorded by drainage gas collection method every day, the gas composition of biogas is measured by gas chromatograph, and the gas collection system is returned to water. After 44 days of fermentation, the experiment was completed and the data was anal...
specific Embodiment approach 2
[0040] Specific embodiment 2: Put distiller's grains in shakers at normal temperature of 25°C and medium temperature of 38°C to carry out fermentation and gas production experiments. The gas production effect at high temperature is obviously better than that at medium temperature and normal temperature.
specific Embodiment approach 3
[0041] Specific embodiment 3: The TS concentration of distiller's grains is respectively set as 1%, 2%, 2.5%, 3%, 3.5%, 4%, and 5%, and then anaerobic fermentation gas production experiment is carried out at high temperature. Other experimental steps are as follows: As shown in Embodiment 1, the result is as follows Figure 4 It can be seen from the results that when the TS concentration of distiller's grains is 2%~3.5%, the gas production effect is better.
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