Regenerative Energie
Bark and timber residues (waste wood) mingled with soil, dirt and stones have so far been landfilled without any alternative use. The aim of this study was to propose a technology for biological treatment of this waste, enabling to produce quality compost.
Lignine-rich material is poorly degradable, therefore its decay was boosted with various inocula. Tests were performed in lab, pilot and field scale. For biodegradability tests of wood carbon, inocula with bacterial communities similar to those of wood in various decomposition stages (species from phyla Actinobacteria) were selected. In lab scale, the content of organic matter and 16S rDNA-based community profiling were explored over time. In pilot scale experiments in 200 L drum reactors degradability and availability of carbon was studied. Based on the results of pilot experiments, the inoculum for field tests was chosen (compost from park waste, food waste, and category III animal by-products). Temperature, content of evolved gases, dry matter and organic matter content of solid sample and respiratory activity were measured. In aqueous extracts pH, conductivity, dry matter and organic matter content and dissolved organic carbon (DOC) were measured. In field tests with external temperatures down to -15°C composting was most active in center layers but temperature drop caused a sharp decline in the composting activity. Windrow leachate was biologically hardly decomposable, though none of the measured indicators showed extensive pollution. Waste wood has a good composting potential as the requirements for input material are low and the recyclable waste is free of harmful impurities.
| Copyright: | © European Compost Network ECN e.V. |
| Quelle: | Orbit 2014 (Juni 2014) |
| Seiten: | 0 |
| Preis: | € 0,00 |
| Autor: | Dr Anne Menert Dr. Mait Kriipsalu Kaja Orupõld |
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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