Biogas Plants (GTZ, 1988)

(introduction...)

Acknowledgements

Preface

0. Biogas as appropriate technology

1. Benefits and costs of a biogas plant

2. The dgestion process

(introduction...)

2.1 The fermentation slurry

2.2 Fermentation slurry as fertilizer

2.3 Biogas

3. Biogas plants

3.1 Feed methods

3.2 Plant types

4. Scaling of biogas plants

4.1 Definitions

4.2 Scaling of the digester

4.3 Scaling of gasholder

4.4 Digester/gasholder ratio

4.5 Measuring and test programmes

5. Design of biogas plants

5.1 Shape and static loading

5.2 Bottom slab

5.3 Spherical shell of masonry construction

5.4 Masonry and mortar

5.5 The parts of a biogas plant and their functions

5.6 Floating gas drum

5.7 Water-lacket plant

5.8 Fixed-dome plants

5.9 Large-scale plants

5.10 Biogas plants in cold regions

6. Biogas utilization

(introduction...)

6.1 Biogas appliances

7. Planning, design and construction

8. Appendix

Bibliography

List of figures