Any material is termed nonusable after its complete utilization for an individual purpose is called waste. Waste is generated either by human beings, animals, or plants, or from any natural or artificial process. Waste takes many forms, such as municipal solid waste (MSW), biodegradable waste, nonbiodegradable waste, chemical waste, construction and demolition waste, electronic waste, biomedical waste, wastewater, sludge, toxic waste, industrial waste, food waste, and so on.