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Greenhouse gas emissions from piggery and biogas digesters in the north of Vietnam

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Title Greenhouse gas emissions from piggery and biogas digesters in the north of Vietnam
 
Creator Pham Van Dung
Duong Cong Hoan
Arango, Jacobo
Tran Dai Nghia
Nguyen Tri Kien
Arévalo, Ashly
Douxchamps, Sabine
 
Subject gas emissions
piggeries
biogas
emisiones de gas
pocilga
 
Description Increases in pig farm densities have caused great pressures on waste management systems and produce massive manure and urine quantities in Vietnam. This study aimed to identify the role and contributions of biogas digesters to better manage the sources of greenhouse gas (GHG) emissions from pig wastes for different types of pig farms in the north of Vietnam. Four provinces, namely Thanh Hoa, Phu Tho, Thai Binh, Vinh Phuc, were identified. A total of 24 farms were purposively selected including 16 small-size farms and 8 larger-size farms. The findings showed that GHG emissions from small-size farms (154.8 t CO2-eq.yr-1) did not significantly differ from the amounts measured in larger-size farms (139.1 t CO2-eq.yr-1) in the four surveyed provinces. The sampling position did not significantly affect the GHG emission rates, with 173.9 t CO2-eq.yr-1 inside piggeries and 120.8 t CO2-eq.yr-1 outside the outlet of the biogas digesters (p-value=0.09). N2O emissions require further measurements at different farm sizes and sites. These results confirmed that the pig waste management of biogas digesters for both small-size and larger-size pig farms is not completely efficient and that efforts need to be invested in to mitigate GHG emissions in pig production. Reducing pig density per piggery is highly recommended. The application of other alternative aerobic or anaerobic digestion technologies like vermicompost, effective microorganisms, and composting should also be encouraged and promoted.
 
Date 2020-12-31
2021-08-02T14:19:16Z
2021-08-02T14:19:16Z
 
Type Journal Article
 
Identifier Van Dung, P.; Cong Hoan, C.; Arango, J.; Dai Nghia, T.; Tri Kien N.; Arévalo A.; Douxchamps, S. (2020) Greenhouse gas emissions from piggery and biogas digesters in the north of Vietnam. Vietnam Journal of Agricultural Sciences 3(4):843-853. ISSN: 2588-1299
2588-1299
https://hdl.handle.net/10568/114505
https://vjas.vnua.edu.vn/index.php?journal=vjas&page=article&op=view&path%5B%5D=177
https://doi.org/10.31817/vjas.2020.3.4.07
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 843-853
application/pdf
 
Publisher Agricultural University Press
 
Source Vietnam Journal of Agricultural Sciences