Magdeburg University 2013

Includes bibliographical references.

Online resource; title from PDF title page (ebrary, viewed February 18, 2014).

Front cover ; Series title ; Title page ; Imprint ; PREFACE; ACKNOWLEDGEMENT; LIST OF PAPERS; TABLE OF CONTENTS; TABLES; FIGURES; ABBREVIATIONS; 1 General introduction; 2 Research objectives; 3 Methane yields and digestion dynamics of press fluids from mechanically dehydrated maize silages using different types of digesters; 3.1 Introduction; 3.2 Material and Methods; 3.2.1 Production of silages and press fluids; 3.2.2 Technical set up and implementation of the digestion tests; 3.2.3 Measurements for monitoring the fermentation process; 3.3 Results.

3.3.1 Chemical composition of the press fluids3.3.2 Batch digestion tests; 3.3.3 Continuous digestion tests using stirrer tank digesters; 3.3.4 Continuous digestion tests using fixed bed digesters; 3.4 Discussion; 3.4.1 Chemical composition of press fluids and batch digestion tests; 3.4.2 Continuous digestion tests; 3.5 Conclusions; 4 Effects of hydrothermal conditioning and mechanical dewatering on ash melting behaviour of solid fuel produced from European semi-natural grasslands; 4.1 Introduction; 4.2 Materials and methods; 4.2.1 Biomass feedstock, conservation and processing.

4.2.2 Sample preparation, chemical analysis and slagging indices4.2.3 Determination of ash melting behaviour; 4.2.4 Statistical analysis; 4.3 Results and Discussion; 4.3.1 Chemical fuel and ash composition and slagging indices; 4.3.2 Determination of ash melting temperatures; 4.3.3 Relationship between fuel parameters and ash meltingbehaviour; 4.4 Conclusions; 5 Comparative life cycle assessment of the integrated generation of solid fuel and biogas from biomass (IFBB) and whole crop digestion (WCD) in Germany; 5.1 Introduction; 5.2 Materials and methods; 5.2.1 Parameters and assumptions.

5.2.2 System description and inventory data5.3 Results and discussion; 5.3.1 Energy efficiency of the conversion techniques; 5.3.2 Primary energy and greenhouse gas saving; 5.3.3 Emissions leading to acidification and eutrophication; 5.3.4 Fuel quality; 5.3.5 Consequences for soil carbon dynamics; 5.4 Conclusions; 6 Life cycle assessment of the integrated generation of solid fuel and biogas from biomass (IFBB) incomparison to different energy recovery, animalbased and non-refining management systems; 6.1 Introduction; 6.2 Material and Methods; 6.2.1 Biomass feedstock; 6.2.2 Impact categories.

6.2.3 Functional unit and system boundary issues6.2.4 Reference system and carbon soil dynamics; 6.2.5 Systems descriptions; 6.3 Results and discussion; 6.3.1 Internal energy fluxes and conversion efficiency of the energy recovery systems; 6.3.2 Non-renewable primary energy balance; 6.3.3 Greenhouse gas balance; 6.3.4 Acidification and eutrophication balance; 6.4 Conclusions; 7 General discussion; 7.1 Biological and chemical parameters; 7.2 Life cycle assessment; 8 Conclusions; 9 Summary; 10 Kurzfassung; 10.1 Einleitung; 10.2 Forschungsziele; 10.3 Schlussfolgerungen; 10.4 Zusammenfassung.

Open Access EbpS