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Research project (§ 26 & § 27)
Duration : 2017-07-01 - 2018-03-31

The lifetime of wind power plants is limited by failure risks of building and power plant components. Subject of the project are the foundations of wind turbines, which are subjected to high number of oscillating loads during operation. The project partner carries out vibration measurements on foundations. These should be used to characterize the current state. It is believed that fatigue damage caused by vibratory stress is reflected in a change in vibration behavior. The work undertaken at BOKU deals with the analysis of the measured velocity time series. A new algorithm shall automatically obtaine characteristic values ​​of the measured signals, which allow an analysis of the condition of the foundation.
Research project (§ 26 & § 27)
Duration : 2018-05-01 - 2021-04-30

Meat processing companies generate large amounts of waste that require complex and costly treatment based on national and European hygiene regulations. Usually, this type of waste is processed in rendering plants (TKV), which require large amounts of thermal energy. The final products are either burned in waste incineration plants and cement factories or are limitedly used as an animal feed additive. From the so far unused waste materials, the base product biochar (nutrient carrier) is obtained by pyrolysis. By varying the process parameters and by a targeted modification of the char surface with chemical methods, the base product is optimized in terms of quantity and quality of nutrients to be adsorbed as well as the maximum achievable water holding capacity. In order to load up the char with essential nutrients digestate from anaerobic treated slaughterhouse waste is used. An innovative low-temperature process (membrane distillation) is applied to increase the nutrient density and to reduce the water content. In addition to the concentrate, pure water is recovered that is able to replace expensive process water in the facility. The resulting product will be extensively characterized, whereas the focus is set on toxic substances (European Biochar Directive) as well as on the quantity and quality of adsorbed nutrients and their bioavailability in soil. Nutricoal therefore enables to close the gap in terms of exploiting the entire waste material accumulated during the slaughter process in an innovative and sustainable way. Low-value waste material will be converted into a high-value biobased product.
Research project (§ 26 & § 27)
Duration : 2017-11-03 - 2018-07-02

With the help of the regional statistics of Salzburg, the important statistical data on the individual Salzburg municipalities (population structure, size, density of buildings, ...) are compiled. Based on this information, a statistically meaningful pattern of communities is randomly selected, which reflects the country structure. As a result, the documents of the approved construction projects are evaluated. Descriptive data will be collected from timber structures in 2016 and 2017 and results will be categorized according to building types.

Supervised Theses and Dissertations