Presentation on theme: "RECYCLING G. CENA AS 2014 / 2015. Recycling is a process to change materials into new products to prevent waste of potentially useful materials, reduce."— Presentation transcript:
Recycling is a process to change materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution.
PAPER RECYCLING Paper recycling is the process of turning waste paper into new paper products. There are three categories of paper that can be used as feedstocks for making recycled paper: mill broke, pre-consumer waste, and post-consumer waste.
PLASTIC RECYCLING Plastic recycling is the process of recovering scrap or waste plastic and reprocessing the material into useful products, sometimes complete different in form from their original state.
GLASS RECYCLING Glass recycling is the process of turning waste glass into usable products. Glass waste should be separated by chemical composition, and then, depending on the end use and local processing capabilities, might also have to be separated into different colors.
The consumer throws glass into a recycle bin. Glass is taken from the bin and taken to a glass treatment plant. The glass is sorted by colour and washed to remove any impurities. The glass is then crushed and melted, then moulded into new products such as bottles and jars. The glass is then sent back to the shops ready to be used again. Glass does not degrade through the recycling process, so it can be recycled again and again. GLASS RECYCLING
ALUMINIUM RECYCLING Aluminium recycling is the process by which scrap aluminium can be reused in products after its initial production. The process involves simply re-melting the metal, which is far less expensive and energy intensive than creating new aluminium through the electrolysis of aluminium oxide, which must first be mined from bauxite ore and then refined using the Bayer process.
WOOD RECYCLING Wood recycling is the process of turning waste timber i nto usable products. Recycling timber is a practice that was popularized in the early 1990s as issues such as deforestation and climate change, prompted both timber suppliers and consumers to turn to a more sustainable timber source.