We know that garbages are one of the problems nowadays. Recycling is the process of converting waste materials into new materials and objects. The recovery of energy from waste materials is often included in this concept. The recyclability of a material depends on its ability to reacquire the properties it had in its virgin or original state.

There are two broad types of recycling operations: internal and external. Internal recycling is the reuse in a manufacturing process of materials that are a waste product of that process. Internal recycling is common in the metals industry, for example. The manufacture of copper tubing results in a certain amount of waste in the form of tube ends and trimmings; this material is remelted and recast. Another form of internal recycling is seen in the distilling industry, in which, after the distillation, spent grain mash is dried and processed into an edible foodstuff for cattle.

Although the level of recycling activities fluctuates over time, the underlying driving forces point to the overall increase of these activities. Recycling is both an economic as well as environmental activity. As an economic activity, recycling represents recovery of residual value from waste product. As an environmental activity, recycling is neither inherently positive nor negative. Life cycle assessment methodology can be applied to the recycling process just like to any other process to assess the overall impact. The environmental impact can be assessed in terms of local, regional and global impacts. Ecoprofile is a form of life cycle assessment but with the application of weighing factors which allow for comparison and rating of impacts.