Digestate as Fertilizer

Content
Statements ................................................................................................... 4
Preamble ..................................................................................................... 5
1 Introduction .............................................................................................. 6
2 Production of biogas and digestate ............................................................... 7
3 Legal requirements in Germany and Europe ................................................... 8
4 Possible applications ............................................................................... 10
5 Application techniques ............................................................................. 12
6 Digestate upgrading techniques ................................................................. 14
6.1 Separation ........................................................................................ 15
6.2 Drying .............................................................................................. 17
6.3 Pelletising ........................................................................................ 18
6.4 Biological treatment ........................................................................... 19
6.5 Liquid preparation ............................................................................. 20
6.6 Nutrient extraction ............................................................................. 21
7 Marketing strategies ................................................................................. 23
8 Quality assurance in Europe ........................................................................ 27
9 Significance of digestate in developing countries ......................................... 28
9.1 Case study: Uganda ............................................................................ 30
9.2 Case study: India ............................................................................... 32
9.3 Case study: Costa Rica ........................................................................ 34
10 Safety first! ........................................................................................... 36
Reference plants ........................................................................................ 37
Company directory ...................................................................................... 46
Organisations ............................................................................................. 58
Glossary .................................................................................................... 60
Imprint ...................................................................................................... 62
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