the potential to recycle material from waste is high , but it may not be appropriate in all cases, for example,where the abundance of raw material,energy comsumption during collection and re-processing,or the emission of pollutants has a greater impact on the environment or is not cost-effective. Materials recycling also implies that there is a market for the recycle materials. The collection from waste, where there is no end market for them. merely results in large surpluses of unwanted materials and also wastes additional energy with no overall environmental gain.