HORTICULTURE

Detailed explanation-1: -Natural gas, which primarily consists of methane, is the cleanest burning fossil fuel. When methane is produced from non-fossil sources such as food and green waste, it can literally take carbon out of the air.

Detailed explanation-2: -It is formed during the decay of household and industrial waste. Highly toxic components of sewer gas include hydrogen sulfide and ammonia. Sewer gas also contains methane, carbon dioxide, sulfur dioxide, and nitrous oxides.

Detailed explanation-3: -Municipal wastewater treatment plants emit nearly double the amount of methane into the atmosphere than scientists previously believed, according to new research from Princeton University. And since methane warms the planet over 80 times more powerfully than carbon dioxide over 20 years, that could be a big problem.

Detailed explanation-4: -Sewage treatment systems begin by collecting solid sludge from wastewater. This sludge is then pre-treated with thermal hydrolysis in a sludge-to-energy system to optimise the quantity of methane it can create. The processed waste is then fed into an anaerobic digester, which breaks it down completely.