Thermophilic anaerobic digestion as suitable bioprocess producing organic and chemical renewable fertilizers : A full-scale approach
| Autor: | Micol Schepis, Ambrogio Pigoli, Stefania Mazzini, Massimo Zilio, Erik Meers, Fabrizio Adani, Andrea Giordano, Fulvia Tambone, Oscar Schoumans |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
020209 energy
Amendment Digestate 02 engineering and technology 010501 environmental sciences engineering.material 7. Clean energy 01 natural sciences Soil Ammonia chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering High Solid Anaerobic Digestion Dry matter Anaerobiosis Duurzaam Bodemgebruik Fertilizers Sewage sludge Waste Management and Disposal 0105 earth and related environmental sciences 2. Zero hunger Sustainable Soil Use Sewage Compost Agriculture Fertilizer properties Pulp and paper industry Ammonium sulphate 6. Clean water Energy crop Anaerobic digestion chemistry 13. Climate action engineering Sludge |
| Zdroj: | Waste Management, 124, 356-367 Waste Management 124 (2021) |
| ISSN: | 0956-053X |
| Popis: | This work reports a full-scale study in which organic wastes were transformed by high-solid thermophilic anaerobic digestion (HSAD), into N fertilizers and organic fertilizers, i.e. digestate. The produced fertilizers were characterized over 42 months and their properties were discussed in comparisons with literature data. HSAD coupled with N stripping technology led to ammonia sulphate production having high N concentration (74 ± 2 g kg−1 wet weight), neutral pH (6.8 ± 1.3) and low traces of other elements. Digestate showed both higher carbon (C) content (314 ± 30 g kg−1 on dry matter (DM) and biological stability than green composts, indicating good amendment properties. Digestate was also interesting for its N (77 ± 3.7 g kg−1 dry matter – DM) content, half of it in the ammonia form, and P content (28 ± 4.1 g kg−1 DM) that was 43% readily available as soluble P-orthophosphate. K content was low (6.5 ± 1.3 g kg−1 DM), indicating poor fertilizing ability of digestate for this element. All organic pollutants investigated were much lower than the limits required for agricultural use and levels of some of them were lower than the content revealed for other organic matrices such as agricultural and energy crop digestates and compost. Emerging pollutants (i.e., pharmaceuticals) were tested as markers and they were found to be below the detection limit ( |
| Databáze: | OpenAIRE |
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