Measuring ammonia and odours emissions during full field digestate use in agriculture
| Autor: | Oscar Schoumans, Ambrogio Pigoli, Bruno Rizzi, Massimo Zilio, Andrea Giordano, Gabriele Geromel, Erik Meers, Fabrizio Adani |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Organic wastes
Environmental Engineering 010504 meteorology & atmospheric sciences Ammonia emissions 010501 environmental sciences engineering.material 01 natural sciences 12. Responsible consumption Open field measurements chemistry.chemical_compound Ammonia Nutrient Animal science Anaerobic digestion Environmental Chemistry Organic matter Odour emissions Duurzaam Bodemgebruik Waste Management and Disposal 0105 earth and related environmental sciences Sustainable Soil Use 2. Zero hunger chemistry.chemical_classification Ammonia volatilization from urea Pollution 6. Clean water chemistry 13. Climate action Digestate engineering Urea Fertilizer Digestate fertilization |
| Zdroj: | Science of the Total Environment, 782 Science of the Total Environment 782 (2021) |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2021.146882 |
| Popis: | The use of digestate in agriculture represents an opportunity for reducing the use of synthetic fertilizers while promoting nutrient and organic matter recycling, i.e. contributing to a circular economy. However, some environmental impacts could result from digestate use, with particular reference to N emissions, which can contribute to particulate matter formation in the atmosphere. So, correct digestate spreading methods need to be tested to reduce ammonia emission and, possibly, also to avoid annoyance to the inhabitants. In this work a digestate from organic wastes was used as a fertilizer by its injection at 15 cm, in comparison with a synthetic one (urea) for three consecutive years in open fields, measuring ammonia and odours emission. On average, the ammonia emission from digestate was of 25.6 ± 9.4 kg N Ha−1 (11.6% ± 4 of Total Ammonia Nitrogen - TAN - dosed), while urea emitted 24.8 ± 8.3 kg N Ha−1 (13.4% ± 4.5 of TAN dosed). The injected digestate also emitted less odour than urea (601 ± 531 and 1767 ± 2221 OU m−2 h−1, respectively), being ammonia coming from urea hydrolysis responsible for odour productions. The different N fertilizers did not lead to differences in crop yields, i.e. 18.5 ± 2.9 Mg grain Ha−1 and 17.4 ± 1.2 Mg grain Ha−1 for digestate and urea respectively. |
| Databáze: | OpenAIRE |
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