Advanced Urban Mining: A Summary of the State of the Art of Metal Recovery out of Dry Bottom Ash

The world’s demand for resources will ceaselessly increase in future. This will have a negative impact on availability and price of finite resources. The only way to satisfy the future demand is to minimize the dissipation of the resources during their life-cycle and to close the latter as good as possible. A potential shortage of resources in the future will make the recovery of resources from waste more efficient than their primary production. Another driver towards the minimization of resource dissipation will be the increasingly tighter legislation on environmental protection.

In municipal waste, recyclable resources are very depleted and/or integrated in complex composite materials. The most efficient and reliable way to get rid of any organic material is undoubtedly by incineration, a process which is technically well approved. The basic concept of facilitating and boosting the efficiency of recycling is called thermo recycling and will be presented in this paper.

As a promising option to increase the yields of thermo recycling processing, the concept of metal recovery following dry bottom ash extraction will be visualized by the example of the new plant of ZAV Recycling AG in Hinwil, Switzerland. Metal recovery from dry bottom ash is a big step towards minimizing metal dissipation into landfills while creating high quality secondary raw materials. Moreover, this technology may open new opportunities to avoid landfilling of the mineralic residues in future.



Copyright: © Thomé-Kozmiensky Verlag GmbH
Quelle: Waste Management, Volume 5 (Dezember 2015)
Seiten: 12
Preis: € 0,00
Autor: Markus Wieduwilt
Dr. René Müller
Mauro Luzzatto
Antoine Brison
 
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