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Materials: Difference between revisions
→PET recycling: + w:Petcore, PET Container Recycling Europe is a Brussels-based non-profit European trade association.
(→Recycling plastics: link to w:Plastic recycling) |
(→PET recycling: + w:Petcore, PET Container Recycling Europe is a Brussels-based non-profit European trade association.) |
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[[w:List of materials properties|Materials have many properties]] which effect which material is most suitable for which use. | [[w:List of materials properties|Materials have many properties]] which effect which material is most suitable for which use. | ||
[[w:Materials science]] is the design and discovery of new materials, particularly solids. | |||
[[w:Timeline of materials technology]] | |||
= Biodegradable waste = | = Biodegradable waste = | ||
| Line 60: | Line 64: | ||
= Plastics = | = Plastics = | ||
Plastics are made from | '''[[w:Plastics]]''' are made from petroleum or recycled plastic. | ||
== Information about plastics on Wikipedia == | |||
* [[w:Plastic container]] | |||
* [[w:Plastic pollution]] | |||
== Recycling plastics == | == Recycling plastics == | ||
'''[[w:Plastic recycling]]''' | '''[[w:Plastic recycling|Plastic recycling article on Wikipedia]]''' | ||
Advanced countries have '''[[w:Container-deposit legislation|deposit-refund systems]]''' for efficient plastic (and aluminum) recovery. | |||
* Most types of plastic can be recycled to make plastic. PVC, marked with code '03' is not welcome in the plastic recycling bin. | |||
<div class="thumb tright"> | |||
<div style="width:400px;"> | |||
[[File:Symbol Resin Code 1 PETE.svg|50px|1-PETE]] | |||
[[File:Symbol Resin Code 2 HDPE.svg|50px|2–HDPE]] | |||
[[File:Symbol Resin Code 3 V.svg|50px|3-PVC]] | |||
[[File:Symbol Resin Code 4 LDPE.svg|50px|4-LDPE]] | |||
[[File:Symbol Resin Code 5 PP.svg|50px|5-PP]] | |||
[[File:Symbol Resin Code 6 PS.svg|50px|6-PS]] | |||
[[File:Symbol Resin Code 7 OTHER.svg|50px|7-Other]] | |||
<div class="thumbcaption">Plastics type marks: the [[w:resin identification code]]<ref>[http://www.plasticsindustry.org/AboutPlastics/content.cfm?ItemNumber=823&navItemNumber=2144 SPI Resin Identification Code – Guide to Correct Use] {{webarchive|url=https://web.archive.org/web/20120321142801/http://www.plasticsindustry.org/AboutPlastics/content.cfm?ItemNumber=823&navItemNumber=2144 |date=2012-03-21 }}. plasticsindustry.org</ref> </div> | |||
</div> | |||
</div> | |||
''' What plastics should be recycled? ''' | |||
In Finland the following rules of thumb have been given: You should put the plastic into a recycling bin if the three following conditions are met: <ref name="HS2018-10-26">https://www.hs.fi/kotimaa/art-2000005877189.html</ref> | |||
# If the packaging (visually inspected) contains more that 50% plastic | |||
# If the packaging does not contain dangerous substances and | |||
# If the packaging is not made of PVC (marked with sign '03') | |||
* As of 2018 in Finland the demand for recycled plastic exceeds the amount being recycled.<ref name="HS2018-10-26"/> | |||
''' Links to information about recycling plastics ''' | |||
* [https://www.bbc.com/news/uk-42703561 Plastic recycling: Your questions answered at BBC.com] | |||
=== PET recycling === | |||
[[File:Symbol Resin Code 1 PETE.svg|100px|1-PETE]] | |||
'''[[w:Polyethylene terephthalate]]''' ('''PET''' or '''PETE''') is the most common type of plastic. | |||
* [[w:PET bottle recycling]] | |||
* [[w:Polyethylene terephthalate#Polyester recycling industry|Polyester terephalate recycling industry in the Wikipedia article on Polyethylene terephthalate]] | |||
* '''PET''' '''Co'''ntainer '''R'''ecycling '''E'''urope, commonly known as '''[[w:Petcore]]''', is a Brussels-based non-profit European trade association. | |||
=== HDPE recycling === | |||
[[File:Symbol Resin Code 2 HDPE.svg|100px|2–HDPE]] | |||
'''[[w:High-density polyethylene]]''' ('''HDPE''') | |||
=== PVC recycling === | |||
[[File:Symbol Resin Code 3 V.svg|100px|3-PVC|PVC]] | |||
'''[[w:Polyvinyl chloride]]''' ('''PVC''') is not accepted in normal consumer plastics recycling bins. But industrial PVC waste may be reprocessed. | |||
'''[[w:Polyvinyl chloride#Sustainability|Wikipedia on sustainability of PVC]]''' states that recycled PVC is broken down into small chips, impurities removed, and the product refined to make pure white PVC. It can be recycled roughly '''seven times''' and has a lifespan of around '''140 years'''. | |||
Another method is the '''[[w:VinyLoop]]''', a proprietary physical plastic recycling process for polyvinyl chloride (PVC). It is based on dissolution in order to separate PVC from other materials or impurities. The solvent is in a closed loop, hence the name. | |||
=== LDPE recycling === | |||
[[File:Symbol Resin Code 4 LDPE.svg|100px|4-LDPE]] | |||
'''[[w:Low-density polyethylene]]''' ('''LDPE''') is the material that most [[w:plastic bag]]s are made of. The [[w:Plastic_bag#Environmental_issues|Wikipedia article on plastic bags, section "Environmental issues"]] states that many recycling plants don't process LDPE. | |||
---- | ---- | ||
=== PP recycling === | |||
[[File:Symbol Resin Code 5 PP.svg|100px|5-PP]] | |||
'''[[w:Polypropylene]]''' ('''PP''') can be recycled. | |||
=== PS recycling === | |||
[[File:Symbol Resin Code 6 PS.svg|100px|6-PS]] | |||
'''[[w:Polystyrene]]''' ('''PS''') | |||
[[w:Polystyrene#Recycling|Wikipedia on Polystyrene recycling]] states that it is generally not accepted in [[w:curbside collection]] due to the lack of recycling companies incentives to invest in compactors. An exception is [[Germany]] where PS is collected due to the packaging law (Verpackungsverordnung) that requires manufacturers to take responsibility for recycling or disposing of any packaging material they sell. | |||
= See also = | = See also = | ||
* [[Energy]] | * [[Energy]] | ||
* [[Material input per service unit]] can be used to measure [[eco-efficiency]] | * [[Material input per service unit]] can be used to measure [[eco-efficiency]] | ||