During the processing of solid waste for the recovery of valuable materials certain residual fractions are inevitably created. As a rule, these cannot be processed at state-of-the-art solid waste processing technology for economic reasons and for quality restraints.
Thus, any contained valuable materials are largely lost for the economic cycle or removed for the long-term by incinerationor landfilling. The more complex mixtures of solid waste from anthropogenic utilization grow, the greater the proportion of residue fractions after processing. In particular, fine-grained material send up in such residual fractions.Through individual examination of objects it is possible to record detailed geometric data thatcannot be detected in mechanical methods or processes. Such data can be used to determine grain sizes according to varying definitions and to deduct information concerning grain shape. Inliterature, a variety of shape indices is proposed. In this study, filling level, surface ripple factor,aspect ratio, sphericity and symmetric elongation were used. So-called descriptors serve for the calculation of these indices. Descriptors are simple geometric properties of an object. These are usually measures of length, as well as areas or volume.
Copyright: | © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben |
Quelle: | Depotech 2014 (November 2014) |
Seiten: | 0 |
Preis: | € 0,00 |
Autor: | Dipl. Ing. Mattias Berwanger David Rüßmann Prof. Dr.-Ing. Thomas Pretz |
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Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau
der Wasserstoffinfrastruktur in Deutschland
Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens
- ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.
Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit