World Library  
Flag as Inappropriate
Email this Article

Vinyloop

Article Id: WHEBN0034034699
Reproduction Date:

Title: Vinyloop  
Author: World Heritage Encyclopedia
Language: English
Subject: Recycling, Polyvinyl chloride, Water Polo Arena, Separation processes, Plastic
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Vinyloop

Vinyloop® is a physical plastic recycling process for Polyvinyl chloride. It is based on dissolution in order to separate PVC from other materials and contamination.

Background

A big issue when talking about the recycling of Polyvinyl chloride waste is the pureness of the recycled material. In most composite materials PVC is among several other materials. To make new products from the recycled PVC, it‘s necessary to separate it from e.g. wood, metal, textiles etc. Traditional recycling methods are not sufficient and expensive, because this separation has to be done manually and product by product.[1]

Vinyloop® is a recycling process which separates PVC from other materials through a process of dissolution, filtration and separation of contaminations. A solvent is used in a closed loop to elute PVC from the waste. This makes it possible to recycle composite structure PVC waste which would normally be incinerated or put in a landfill site.[2]

Process

The process consists of the following steps:

  1. Pretreatment: waste plastics are cleaned, ground and mixed
  2. Dissolution: a specific solvent is used to selectively dissolve the PVC compound in a closed loop
  3. Filtration: impurities which have not been are removed through filtration can be dissolved – they are separated by type of material by filtration, centrifugation and decantation. After separation, the secondary materials are washed with pure solvent to dissolve all remaining PVC compounds
  4. Precipitation of the regenerated PVC compound: the solution of PVC is recovered in a precipitation tank, where steam is injected to evaporate the solvent and precipitate the PVC. The PVC compound is separated in the form of aqueous effluent.[3][4] and dried.
  5. Drying: after recovering the excess water from the slurry, the wet PVC goes to a dryer.

Possible products made from recycled PVC are coatings for waterproofing membranes, pond foils, shoe soles, hoses, diaphragms tunnel, coated fabrics, and PVC sheets. It is an attempt to solve the recycling waste problemacy of PVC products.[5][6][7]

Ecological importance

"The environmental performance of PVC recycling (VinyLoop®) is a lot better than new production in most of the impact categories." Vinyloop-based recycled PVC's primary energy demand is 46 percent lower than conventional produced PVC. The global warming potential is 39 percent lower.[1][8]

The VinyLoop® process has been selected to recycle membranes of different temporary venues of the London Olympics 2012. Roofing covers of the Olympic Stadium, the Water Polo Arena, the London Aquatics Centre and the Royal Artillery Barracks will be deconstructed and a part will be recycled in the VinyLoop® process.[9]

As we have done in the past with materials such as timber and concrete, we want to use the opportunity of hosting the London 2012 Games to work with industry to set new standards. In this case this may help move the industry towards more sustainable manufacture, use and disposal of PVC fabrics.
Dan Epstein Head of Sustainable Development at Olympic Delivery Authority (ODA)[10]

See also

References

  1. ^ http://ec.europa.eu/enterprise/sectors/chemicals/files/sustdev/pvc_report_en.pdf
  2. ^ http://www.ifu.com/uploads/tx_ifureference/Umberto_Success_Solvay_en.pdf
  3. ^ moonlight dancer productions. "Roofcollect" (in Deutsch). Roofcollect. Retrieved 2012-11-09. 
  4. ^ Plastics Technology, 8 August 2001, p 58-61: New methods in PVC recycling
  5. ^ http://www.plasticseurope.org/documents/document/20110422155920-vinyl2010__progress_report_2011.pdf
  6. ^ Machine Design, Cleveland, June 5, 2003. vol. 75, Iss. 11; pg. 79.
  7. ^ http://www.vinyloop.com
  8. ^ "To Recycle or Not to Recycle – PVC Cable Waste is the Question7". July 2012. 
  9. ^ http://www.wasterecyclingnews.com/article/20120801/NEWS02/120809998/pvc-at-olympics-destined-for-reuse-or-recycling
  10. ^ http://www.london2012.com/news/articles/2009/5/london-2012-seeks-sustainable-solutions-for-temporary-ve-1243087.html
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.