Waste+(Recycling)

=**Recycling**=

(Geoffrey Neuss (2007). Environmental chemistry, Waste. Location: Oxford New York)
 * Resource || Recycling process ||
 * Metal || * Mainly aluminium and steel can be melted down and recast into other objects
 * Energy used to recycle metals are far less than the energy used to extract and purify them
 * Metals do not lose any of their properties when recycled ||
 * Glass || * Glass must first be sorted into colour and melted to be remolded
 * Making glass form its raw materals takes more energy than recycling it
 * Glass does not deterioate during the recycling process and thus can be reused indefinitely ||
 * Plastic || * Many types of plastics (Seen below) can be recycled, however, sorting out the different types is a lengthy and costly process
 * Recycling plastics helps reduce pollution and requires less energy to recycle than to make them from crude oil ||
 * Paper || * Paper is first storted into grades before having the ink washed off.
 * They are then made into slurry to form new types of paper (eg. tissue paper)
 * Making compost of paper is an alternative that would help save cost of sorting and deinking the paper. ||

(IDES The Plastics Web (2010). Plastic Recycling Codes Retrieved from: [])
 * Code symbol || Name || Typical uses ||
 * [[image:http://www.ides.com/plasticsweb/images/code1.gif width="51" height="67" align="center" caption="Polyethylene Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || Polyethylene terephalate || Soft drink bottles ||
 * [[image:http://www.ides.com/plasticsweb/images/code2.gif width="51" height="67" align="center" caption="HDPE Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || High-density polyethylene || Milk bottles ||
 * [[image:http://www.ides.com/plasticsweb/images/code3.gif width="51" height="67" align="center" caption="Vinyl/PVC Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || Polyvinyl chloride || Food trays ||
 * [[image:http://www.ides.com/plasticsweb/images/code4.gif width="51" height="67" align="center" caption="LDPE Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || Low-density polyethylene || Carrier bags ||
 * [[image:http://www.ides.com/plasticsweb/images/code5.gif width="51" height="67" align="center" caption="Polypropylene Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || Polypropylene || Microwaveable food trays ||
 * [[image:http://www.ides.com/plasticsweb/images/code6.gif width="51" height="67" align="center" caption="Polystyrene Recycling Code" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || Polystyrene || Protective packaging for toys and electronic goods ||
 * [[image:http://www.ides.com/plasticsweb/images/code7.gif width="51" height="67" align="center" caption="Others" link="http://www.ides.com/resources/plastic-recycling-codes.asp"]] || All other plastics || eg. melamine ||

Go to http://h2rubyenvironchem.wikispaces.com/Waste+%28Nuclear+waste%29 for Radioactive wastes.