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Downcycling is the process of converting waste materials or useless products into new materials or products of lesser quality and reduced functionality. The goal of downcycling is to prevent wasting potentially useful materials, reduce consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution, and lower greenhouse gas emissions as compared to virgin production. A clear example is plastic recycling, which turns the material into lower grade plastics.
The term downcycling was used by Reiner Pilz of Pilz GmbH in an interview by Thornton Kay of Salvo in 1994 [1].
We talked about the impending EU Demolition Waste Streams directive. "Recycling, he said, "I call it downcycling. They smash bricks, they smash everything. What we need is upcycling where old products are given more value not less." He despairs of the German situation and recalls the supply of a large quantity of reclaimed woodblock from an English supplier for a contract in Nuremberg while just down the road a load of similar blocks was scrapped. In the road outside his premises, as the result of the German's demolition waste recycling. It was a pinky looking aggregate with pieces of handmade brick, old tiles and discernible parts of useful old items mixed with crushed concrete. Is this the future for Europe?
The term downcycling was also used by William McDonough and Michael Braungart in their 2002 book Cradle to Cradle: Remaking the Way We Make Things.
Examples of downcycling
- Increasing the recycle number of plastic recyclables (see above)
- Transferring disposable batteries to lower-power devices (e.g. taking batteries from a digital camera to a TV remote)
- Reusing defective car batteries for lower-power applications.
- Reusing rag towels for other cleaning environments.
- Often times, when people upcycle, individually downcycled parts are often involved.
- Finding alternate purposes for obsolete technology. Such as using an older computer to play music while a newer computer is available for everyday purposes. Older MP3 players can play a similar role.
- Keeping an older vehicle on a commercial utility fleet as an "extra" vehicle in case the newer ones need routine maintenance. However the older vehicle needs less maintenance since its used less.
- Crushing a reusable brick to create a very much cheaper recycled aggregate substitute. Apart from the loss of value there is also a loss of energy. The embodied energy of the old brick is destroyed when it is crushed, and additional process energy is usually needed to crush it. So recycled brick aggregate can be a doubly downcycled product, not only losing monetary value but also losing energy and increasing CO2 emissions. This is typical of much downcycling.
See also
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- ^ Kay, T Salvo in Germany - Reiner Pilz, p14 SalvoNEWS No99 11 October 1994
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