NURSING ANM AND GNM

Detailed explanation-1: -When MSW is first deposited in a landfill, it undergoes an aerobic (with oxygen) decomposition stage when little methane is generated. Then, typically within less than 1 year, anaerobic conditions are established and methane-producing bacteria begin to decompose the waste and generate methane.

Detailed explanation-2: -In municipal solid waste (MSW) landfills, methane is generated as a product of the anaerobic degradation of organic waste.

Detailed explanation-3: -WHAT IS THE COMPOSITION OF A LANDFILL? There are four critical elements in a secure landfill: a bottom liner, a leachate collection system, a cover, and the natural hydrogeologic setting. The natural setting can be selected to minimize the possibility of wastes escaping to groundwater beneath a landfill.

Detailed explanation-4: -Trash decomposes (or rots) in landfills, creating methane gas. Methane rises to the top of the landfill and is collected in pipes. The methane is burned to produce heat or generate electricity.