<P> Incineration is common in countries such as Japan where land is more scarce, as these facilities generally do not require as much area as landfills . Waste - to - energy (WtE) or energy - from - waste (EfW) are broad terms for facilities that burn waste in a furnace or boiler to generate heat, steam or electricity . Combustion in an incinerator is not always perfect and there have been concerns about pollutants in gaseous emissions from incinerator stacks . Particular concern has focused on some very persistent organic compounds such as dioxins, furans, and PAHs, which may be created and which may have serious environmental consequences . </P> <P> Recycling is a resource recovery practice that refers to the collection and reuse of waste materials such as empty beverage containers . The materials from which the items are made can be reprocessed into new products . Material for recycling may be collected separately from general waste using dedicated bins and collection vehicles, a procedure called kerbside collection . In some communities, the owner of the waste is required to separate the materials into different bins (e.g. for paper, plastics, metals) prior to its collection . In other communities, all recyclable materials are placed in a single bin for collection, and the sorting is handled later at a central facility . The latter method is known as "single - stream recycling ." </P> <P> The most common consumer products recycled include aluminium such as beverages cans, copper such as wire, steel from food and aerosol cans, old steel furnishings or equipment, rubber tyres, polyethylene and PET bottles, glass bottles and jars, paperboard cartons, newspapers, magazines and light paper, and corrugated fiberboard boxes . </P> <P> PVC, LDPE, PP, and PS (see resin identification code) are also recyclable . These items are usually composed of a single type of material, making them relatively easy to recycle into new products . The recycling of complex products (such as computers and electronic equipment) is more difficult, due to the additional dismantling and separation required . </P>

Why flow process of waste management is important