Regenerative Energie
Anaerobic digestion of wastes, by-products and energy crops has a prospering development for green energy production but the downstream processing of residues waste water and nutrients has not yet been solved. As these materials mainly have a high energetic potential, anaerobic digestion of animal by-products gives a promising solution in both, an economical and ecological view (Kirchmayr et al., 2006). Methane can be recovered and used in energy production to replace fossil fuels and thereby reduce CO2 emissions. In contrast to aerobic treatment, most of the nutrients remain in the treated material and the end-product can be used as agricultural fertilizer.
This study focuses on the enhancement of an Austrian anaerobic digestion plant operting exclusively on animal by products at a slaughterhouse site. Three cases of a new process setup are compared: The current situation as reference and the widening of COD:TKN ration by additional COD input and TKN reduction in form of ammonia stripping directly out of the process. The results show that the provided additional COD source can not improve the digestion capacity. The reduction and recovery of ammonia boosts the digestion process. An COD degration of 45 % was obtained in the reference situation and 81 % COD reduction was derived for low nitrogen case. Economic calculation show that the additional methane produced execceds the energy input required for the stripping processes.
| Copyright: | © IWWG International Waste Working Group |
| Quelle: | Specialized Session D (Oktober 2007) |
| Seiten: | 7 |
| Preis: | € 7,00 |
| Autor: | Dipl.-Ing. Dr. Christoph Resch Dipl.-ing Alexander Wörl Dipl.-Ing. Reinhold Waltenberger Rudolf Braun Dipl.-Ing. Roland Kirchmayr |
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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