The intention is to capture gas from household (kitchen) waste in small and affordable anaerobic biogas plants with low space requirements.
The developed tube-type rooftop biogas plant is best run with kitchen and food waste for methane production.
Kitchen waste as feedstock has a higher energy density compared to manure and digestion takes place rapidly.
So a smaller quantity of decomposing material needs to be held in the plant. 2-3 kg (dry matter) kitchen and food waste feedstock produces about 1 m3 of biogas, whereas 28 kg of cattle dung feedstock would be needed to produce the same quantity of gas.
Handling of the plant and waste
The wet organic material (kitchen waste and food waste) is collected in bins and containers brought to the rooftop. The waste is then mixed with water (twice daily 1kg of kitchen waste with 2 litres of water) and directly charged into the inlet of biogas digester, where bacteria breaks down the material and releases biogas.
A rubber pipe connects the biogas digester to the gas stove, where it is used for cooking.
The outlet from the biogas digester lets out the very watery slurry, which can be used as organic fertilizer.
A pressure gage is used to monitor the pressure of the biogas that is available for cooking purposes. A hydraulic chamber is not applied. Instead the plant is pressurized through weight on the gas holder.
The biogas plant has the capacity to hold 1.0 m3 gas and is able to provide enough biogas to cook for 1.5 hours (in total) per day and produces best quality organic fertilizer.
The empty biogas plant weighs around 15 kg and can be transported easily.
Source: energypedia.info/index.php/TyreTube_Biogas_Plant
The developed tube-type rooftop biogas plant is best run with kitchen and food waste for methane production.
Kitchen waste as feedstock has a higher energy density compared to manure and digestion takes place rapidly.
So a smaller quantity of decomposing material needs to be held in the plant. 2-3 kg (dry matter) kitchen and food waste feedstock produces about 1 m3 of biogas, whereas 28 kg of cattle dung feedstock would be needed to produce the same quantity of gas.
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TyreTube Biogas Plant |
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TyreTube Biogas Plant Diagram |
Handling of the plant and waste
The wet organic material (kitchen waste and food waste) is collected in bins and containers brought to the rooftop. The waste is then mixed with water (twice daily 1kg of kitchen waste with 2 litres of water) and directly charged into the inlet of biogas digester, where bacteria breaks down the material and releases biogas. A rubber pipe connects the biogas digester to the gas stove, where it is used for cooking.
The outlet from the biogas digester lets out the very watery slurry, which can be used as organic fertilizer.
A pressure gage is used to monitor the pressure of the biogas that is available for cooking purposes. A hydraulic chamber is not applied. Instead the plant is pressurized through weight on the gas holder.
The biogas plant has the capacity to hold 1.0 m3 gas and is able to provide enough biogas to cook for 1.5 hours (in total) per day and produces best quality organic fertilizer.
Specialty of this roof top biogas plant
A big plus for this type of plant is the fact that the core parts can be made out of recycled materials. In this case rejected tractor tubes have been used for the digester and gas holder. Piping, gas valve, pressure gauge and stove had to be bought. The total cost of the plant material was $60-70. Assembling time was only about thirty minutes(!).The empty biogas plant weighs around 15 kg and can be transported easily.
Source: energypedia.info/index.php/TyreTube_Biogas_Plant
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