Biofuels are one of the alternative energy sources. It can be made from almost any kind of organic waste, even manure. Biofuels, composed of methane and carbon dioxide, are produced by bacteria that decompose organic waste under anaerobic conditions.
Biofuels are environmentally friendly, they do not increase the "greenhouse effect" and are quite suitable as a substitute for natural gas, which belongs to minerals and damages the atmosphere. Practical uses for biofuels include power generation, heating, cooking and steam generation.
1. Make a gruel from an equal weight mixture of raw organic materials and water. Pour raw materials into a bucket and weigh. Fill the second bucket with water until its mass is equal to the mass of the first bucket. Mix raw materials and water until smooth.
2. Place the slurry in the digestion chamber of the biogas plant. Add seed (biowaste residues) in an amount of about 2 times the raw material volume. For example, if the raw material has filled the bucket to the end, you will need 2 buckets of seed.
3. Measure the pH of the slurry in the fermentation chamber using a special device. For anaerobic bacteria to work well, the environment needs to be slightly alkaline. The neutral pH is 7.0, everything below it is acidic, everything above is alkaline. Adjust the pH by adding water or gently adding a little lime until it reaches your desired pH. Monitor and, if necessary, correct the pH during the time spent in the installation, or during the period while biofuel is produced from slurry.
4. Use a thermometer to measure the temperature of the slurry. The ideal temperature is 30-40 ° C in the fermentation chamber, since at this temperature anaerobic bacteria are most active. If the temperature is too low, use a small heat source, such as a room heater, or, if you live in warm climates, dig a hole in the ground, line it with duct tape, and place the fermentation chamber in the hole. Monitor and, if necessary, adjust the temperature during biofuel production.
5. Stir or shake the slurry at least once a day during the biofuel life. This period depends on certain factors, such as temperature and composition of the slurry, but generally varies from 2 to 4 weeks.
