Regenerative Energie
The use of biomass as a renewable energy source results in the production of ashes that are often landfilled. This is a waste of nutrients like P, Ca, Mg, K, and a number of micronutrients. It is known that wood ash can be used as fertilizer or lime replacement, as well as an additive in composting. This is owed to its ability to buffer pH and reduce compost malodours. Nevertheless, the Austrian Compost Ordinance allows a maximum admixture of 2% ash.
This study investigated the effects of ash amendments of 0, 6% and 12% on the physical/chemical and microbial properties of a compost made from a mixture of communal biowaste and green waste. Various parameters were measured during a 9 week composting process and after a 24-week curing. Chemical and physical analyses showed that the composts with wood ash amendment more rapidly matured than composts without amendment. Community Level Physiological Profiling showed a clustering of maturing phase composts, while composts at the end of the curing phase grouped separately, depending on whether they had been amended with ash or not. Microbiological investigation of composts using the COMPOCHIP microarray and DGGE showed that wood ash affected the microbial diversity more in initial composting stages, while more mature composts exhibited similar microbial communities. Plant growth was best with the 6% ash compost. In conclusion results indicate that ash additions of 6 and 12 percent are positive for the process and end product, thus a revision of the compost ordinance should be considered.
| Copyright: | © European Compost Network ECN e.V. |
| Quelle: | Orbit 2014 (Juni 2014) |
| Seiten: | 0 |
| Preis: | € 0,00 |
| Autor: | Marina Fernández-Delgado Juárez I. Franke-Whittle H. Insam |
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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