What is Biogas-
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| Biogas |
Biogas is the organic materials that release biogas when in decomposition by a fermentation process that means anaerobic digestion is equal to the Anaerobic digestion is a collection of processes by which micro-organisms break down biodegradable material in the absence of oxygen. It is also known as renewable natural gas, as opposed to fossil gas. So, in this article let's know about the advantages of Biogas, disadvantages of Biogas etc.
Biogas is nothing but the mixture of Methane CH4 and Carbon dioxide CO2 supplemented with some other components. It is a combustible gas. It is useful in the preparation of heat, electricity or also biofuel. Biogas can be directly captured at landfills of waste produced in biogas plants.
Production of biogas-
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| Biogas production |
The production of Biogas is very simple and do not have high cost. The process by which the Biogas is produced is known as Anaerobic digestion. Anaerobic digestion of a biodegradable substances produces biogas. Cow dung and other animal manures, also the material for the raw materials for the biogas. There can be many different types waste that can useful in biogas production. Let us take one popular example of waste is -distillery spent wash is a best waste for the produce biogas. To identify a waste can production of biogas, but here we have to check its biodegradability and also pH, carbon nitorgen ratio, etc. Also, we can examine the higher biogas yield by measuring its COD level.
The biogas plant consume all types of organic waste mainly livestock manure and organic industrial waste. The dry solid in livestock manure include carbon, among other things, and in the method this carbon is transformed into biogas, a compound of methane (CH4) and carbon dioxide (CO2).
The animal manure and waste are mixed in the Plant's consuming tank before being heated to 38°C to 52°C (in degree celcius) or in Farady 100°F to 125.6°F and pumped into the digester in which the biogas is produced. The biomass stays in the digester for 15-20 days and the fermented slurry can subsequently be useful as crop fertilizer. This fertilizer has improved qualities such as less smell inconveniences when spreading the slurry and significant decreasing of green house gasses.
Advantages of Biogas -
1. It is a cheap, safe and renewable source of energy.
2. It can be used for domestic lighting, cooking, street lighting as well as small scale industries.
3. It burns with blue flame and without smoke.
4. It helps to improve sanitation of the surrounding.
5. It is eco-friendly and does not cause pollution and imbalance of the environment.
6. It can be easily generated, stored and transported.
Disadvantages of biogas -
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| Disadvantages of biogas |
1) Biogas having low calorific value of energy (39850 kJ/kg) in the comparison to other gases like petrol,diesel, or LPG .
2) There is presence of methane gas in biogas that is 21 times more dangerous or harmful than carbon dioxide to therefore don’t allow it to comes out directly into the environment without burning. That means burning of all waste is important for the environment.
3) Compressing the biogas into commercial cylinders is bit costly because it needed lot of advanced equipments but as well as this method has full potential to become future fuel instead of CNG.
4) For continuous work of biogas we required proper supply of food waste.