Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars
Slurry storage is a significant source of NH<sub>3</sub> and greenhouse gas (GHG) emissions. The aim of this laboratory study was to assess the effects of different chemical additives and biochars on the emissions of NH<sub>3</sub>, N<sub>2</sub>O, CO<sub>2&...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/11/2744 |
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| author | José L. S. Pereira Adelaide Perdigão Francisco Marques Dulcineia F. Wessel Henrique Trindade David Fangueiro |
| author_facet | José L. S. Pereira Adelaide Perdigão Francisco Marques Dulcineia F. Wessel Henrique Trindade David Fangueiro |
| author_sort | José L. S. Pereira |
| collection | DOAJ |
| description | Slurry storage is a significant source of NH<sub>3</sub> and greenhouse gas (GHG) emissions. The aim of this laboratory study was to assess the effects of different chemical additives and biochars on the emissions of NH<sub>3</sub>, N<sub>2</sub>O, CO<sub>2</sub>, and CH<sub>4</sub> during the short-term storage of pig slurry. The experiment was performed using Kilner jars filled with raw slurry as control and six treatment additives (5% <i>w</i>/<i>w</i>): acidified slurry, alkalinized slurry, neutralized slurry, agroforestry biochar, cardoon biochar, and elderberry biochar. The gas emissions were measured for 30 days, and the composition of the slurries was determined. During short-term storage, the results of this laboratory study indicated that the NH<sub>3</sub> emissions were reduced by 58% by acidification and by 20% by the biochars (Agroforestry, Cardoon, and Elderberry treatments), while neutralization reduced this loss by only 12%. Nitrous oxide emissions were not reduced by the chemical additives (Acidified, Alkalinized, and Neutralized treatments), while this loss was increased by 12% by the biochars. Carbon dioxide, CH<sub>4</sub>, and global warming potential emissions were not affected by the chemical additives and biochars. Furthermore, the absence of differences between the biochars may be related to their similar composition. Regarding the influence of the studied additives on NH<sub>3</sub> losses, it can be concluded that acidification was the best mitigation measure and the biochars were quite similar due to their composition. Furthermore, neutralization had the advantage of sanitizing the slurry, but only had a mild impact on NH<sub>3</sub> preservation. |
| first_indexed | 2024-03-09T19:21:00Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T19:21:00Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-5883869f75df4633be919406966c04a92023-11-24T03:21:36ZengMDPI AGAgronomy2073-43952022-11-011211274410.3390/agronomy12112744Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and BiocharsJosé L. S. Pereira0Adelaide Perdigão1Francisco Marques2Dulcineia F. Wessel3Henrique Trindade4David Fangueiro5Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, PortugalAgrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, PortugalAgrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, PortugalAgrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, PortugalCentre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, PortugalLEAF, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, PortugalSlurry storage is a significant source of NH<sub>3</sub> and greenhouse gas (GHG) emissions. The aim of this laboratory study was to assess the effects of different chemical additives and biochars on the emissions of NH<sub>3</sub>, N<sub>2</sub>O, CO<sub>2</sub>, and CH<sub>4</sub> during the short-term storage of pig slurry. The experiment was performed using Kilner jars filled with raw slurry as control and six treatment additives (5% <i>w</i>/<i>w</i>): acidified slurry, alkalinized slurry, neutralized slurry, agroforestry biochar, cardoon biochar, and elderberry biochar. The gas emissions were measured for 30 days, and the composition of the slurries was determined. During short-term storage, the results of this laboratory study indicated that the NH<sub>3</sub> emissions were reduced by 58% by acidification and by 20% by the biochars (Agroforestry, Cardoon, and Elderberry treatments), while neutralization reduced this loss by only 12%. Nitrous oxide emissions were not reduced by the chemical additives (Acidified, Alkalinized, and Neutralized treatments), while this loss was increased by 12% by the biochars. Carbon dioxide, CH<sub>4</sub>, and global warming potential emissions were not affected by the chemical additives and biochars. Furthermore, the absence of differences between the biochars may be related to their similar composition. Regarding the influence of the studied additives on NH<sub>3</sub> losses, it can be concluded that acidification was the best mitigation measure and the biochars were quite similar due to their composition. Furthermore, neutralization had the advantage of sanitizing the slurry, but only had a mild impact on NH<sub>3</sub> preservation.https://www.mdpi.com/2073-4395/12/11/2744animal slurrybiocharchemical additivegaseous emissionsmitigation measureslurry additive |
| spellingShingle | José L. S. Pereira Adelaide Perdigão Francisco Marques Dulcineia F. Wessel Henrique Trindade David Fangueiro Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars Agronomy animal slurry biochar chemical additive gaseous emissions mitigation measure slurry additive |
| title | Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars |
| title_full | Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars |
| title_fullStr | Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars |
| title_full_unstemmed | Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars |
| title_short | Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Chemical Additives and Biochars |
| title_sort | mitigating ammonia and greenhouse gas emissions from stored pig slurry using chemical additives and biochars |
| topic | animal slurry biochar chemical additive gaseous emissions mitigation measure slurry additive |
| url | https://www.mdpi.com/2073-4395/12/11/2744 |
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