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Gewählte Master / Diploma Thesis:

Elisabeth Söllinger (2018): Vergleichende Ökobilanzierung ausgewählter Kompostierungsverfahren für agrarische und kommunale Reststoffe.
Master / Diploma Thesis - Institut für Landtechnik, BOKU-Universität für Bodenkultur, pp 129. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
In Austria, the annual production of biogenic waste amounts to 2,2 million tons and an additional 1,3 million tons of green waste. Composting, as a form of recycling of biogenic residues, has a high priority in terms of environmental protection. However, the composting process is tied to the discharge of emissions into the natural environment. Hence, the overall objective of this master thesis is to compare the environmental impacts of three different composting technologies: a) open, low-tech windrow composting, b) encapsulated, partially enclosed composting in the rotting tunnel, c) enclosed aerated pile composting. The comparison is implemented with the method of life cycle assessment using the openLCA v1.7 software and the ecoinvent v3.4 database. The environmental impacts of the entire composting process of 1 t of biogenic residual material “from cradle to grave” are quantified for six impact categories. The impacts for the 100-year global warming potential range from 134 to 206 kg CO₂-eq/t wet waste with the lowest value calculated for the enclosed aerated pile technology. For all impact categories, the release of gaseous emissions through the rotting process, the demand for electricity and diesel and the disposal of contaminants are the main contributors. The LCA results emphasize the importance of minimizing CH₄, N₂O und NH₃ emissions through proper operational management of the facility in order to reduce the environmental burdens.

Beurteilende(r): Gronauer Andreas
1.Mitwirkender: Piringer Gerhard
2.Mitwirkender: Kral Iris
3.Mitwirkender: Bauer Alexander

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