"Wonders with waste - First and foremost, environmental damage is reduced by using biogas as a fuel for energy".
Recent years have witnessed rapid industrialization for better world and population growth, along with recklessly extravagant consumption of energy. This in turn has triggered enormous increase in energy production based on non-renewable energy resources such as oil, coal, and natural gas. In order to break the dependence on fossil fuels, much research is underway to find new and efficient ways of energy production from renewable energy sources.
While thinking about environment and all the problems that we have created regarding pollution, it may be time to start thinking about possible solutions. We are now aware of things like - Making money with manure, From kitchen waste to Biogas etc. In several places around the world, communities are already converting things like cow dung, human waste and kitchen garbage into usable energy. Growing uncertainty about our more traditional energy sources is increasing demand for sustainable energy, not least biogas. Biogas is a renewable energy source, like solar and wind energy. Furthermore, biogas can be produced from regionally available raw materials and recycled waste and is environmentally friendly and easy to produce almost everywhere.
Biogas production capacity is directly proportional to the agricultural level of a country. Its ease of production and relatively higher efficiency compared to other renewable energy sources make it particularly important for countries which are not self-sufficient in energy production.
What is biogas?
Biogas is a mixture that is produced by microorganisms during the decomposition of vegetable and animal wastes in an oxygen-free environment. It consists of methane (60–70%), carbon dioxide (30–40%) and hydrogen-sulfide (0–2%). For its production, plant seeds that are rich in oil (e.g. sunflower), vegetables rich in carbohydrates (e.g. potato, wheat, corn, beet), fiber-rich plants (e.g. flax), other plant and tree remains (e.g. branches, hay, roots, bark), and animal remains can be utilized as raw material. Municipal and industrial waste can also be utilized on the condition that they are purified from inorganic materials like plastic and glass.
The term 'biogas' is commonly used to refer to a gas which has been produced by the biological breakdown of organic matter in the absence of oxygen. The gases methane, hydrogen and carbon monoxide can be combusted or oxidized with oxygen and the resultant energy release allows biogas to be used as a fuel. Biogas production technology provides alternate source of energy in rural areas and acts as an appropriate technology that meets the basic need of cooking fuel in rural areas. Using local resources, that is cattle waste and other organic wastes, energy and manure ( nutrient value and can be applied on land) are derived.
Biogas is produced by the action of bacteria on organic material in airless conditions hence the process is also known as anaerobic digestion. The bacteria slowly digest the material (usually animal dung, human wastes and crop residues) and produce a gas which is roughly 60% methane and 40% carbon dioxide.