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Now showing items 11-14 of 14
Dissertation
Energetische Verwertung städtischen Laubs
(2017-11-28)
Das relativ saubere Parklaub und verschmutzte städtische Straßenlaub wurde durch das IFBB-Verfahren nach seiner energetischen Verwertbarkeit untersucht. Das Parklaub wurde durch das typische IFBB-Verfahren verarbeitet. Da das Straßenlaub durch Störstoffe (Sand, Kies, Plastik, Papier, Metallstücke) belastet war, bestand die Notwendigkeit es gründlich zu reinigen. Deswegen wurde der Vorgang der Konditionierung des IFBB-Verfahrens bei 40°C bei Straßenlaub durch den Reinigungsprozess bei 10-12°C ersetzt. Das Pressen in ...
Dissertation
Laboratory and field experiment evaluation of alternatives for maize in biogas production
(2017-09-28)
The objective of this thesis was to investigate possible alternatives to monocropped maize for the production of biogas.
The strategy of double-cropping for the production of biogas substrates is addressed by degradation experiments with maize as the standard crop and the two alternative crops sunflower and sorghum-sudangrass. Biological degradation experiments were made in biogas batch reactors for all three crops in each maturity stage. The remaining material was analysed for different chemical parameters to ...
Dissertation
Determination of yield and quality parameters of energy crops applying laboratory and field spectroscopy
(2010-06-04)
A real-time analysis of renewable energy sources, such as arable crops, is of great importance with regard to an optimised process management, since aspects of ecology and biodiversity are considered in crop production in order to provide a sustainable energy supply by biomass.
This study was undertaken to explore the potential of spectroscopic measurement procedures for the prediction of potassium (K), chloride (Cl), and phosphate (P), of dry matter (DM) yield, metabolisable energy (ME), ash and crude fibre contents ...
Dissertation
Digital image analysis as a tool to estimate legume contributions in legume-grass swards
(2010-01-29)
Summary: Productivity and forage quality of legume-grass swards are important factors for successful arable farming in both organic and conventional farming systems. For these objectives the botanical composition of the swards is of particular importance, especially, the content of legumes due to their ability to fix airborne nitrogen. As it can vary considerably within a field, a non-destructive detection method while doing other tasks would facilitate a more targeted sward management and could predict the nitrogen ...