As a result of people's social and economic activities, all kinds of substances that have expired and become harmful to nature are called waste. Materials such as cardboard, glass, metal, plastic can be classified as waste. Reuse of waste can only be achieved by recycling. Recycling is the conversion of these wastes, which can be reused, into a second raw material by subjecting them to physical or chemical processes. The aim of recycling is to prevent excessive use of resources, to ensure that wastes are separated at their sources, and to reduce the amount of waste garbage.
With the recycling of materials such as paper, cardboard, glass, plastic and metal, the depletion of natural resources will be prevented. With recycling, which contributes greatly to the country's economy, the amount of foreign currency paid for imported scrap material will decrease and significant savings will be achieved in energy use. Recycling used paper reduces air pollution by 74-94%, water pollution by 35% and water use by 45%. Adding 1 ton of waste paper to the pulp prevents 8 trees from being cut down. Recycling is a very productive economic investment in the long run. Human beings are faced with many economic problems in the future as a result of the gradual depletion of raw materials and natural resources. At this point, recycling is the best opportunity for the recovery of the economy. On the other hand, many recycled wastes will contribute greatly to the prevention of environmental pollution.
 

Importance of Recycling

• It prevents the reduction of natural resources.
• It saves energy. The amount of solid waste that needs to be disposed of is reduced.
• It contributes to the economy.
• It ensures to leave a clean environment for future generations.
• It contributes to the reduction of greenhouse gas emissions.
• Recycling household waste with compost method increases soil fertility.

Thus, both organic and high nutritional value products are obtained.