Greenhouse gas emissions from piggery and biogas digesters in the Red River Delta of Vietnam

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.contributor.affiliationInternational Center for Tropical Agricultureen_US
cg.contributor.affiliationDepartment of Livestock Production, Vietnamen_US
cg.contributor.affiliationInstitute of Policy and Strategy for Agriculture and Rural Development, Vietnamen_US
cg.contributor.crpLivestocken_US
cg.coverage.countryVietnamen_US
cg.coverage.iso3166-alpha2VNen_US
cg.coverage.regionAsiaen_US
cg.coverage.regionSouth-eastern Asiaen_US
cg.creator.identifierJacobo Arango: 0000-0002-4828-9398en_US
cg.creator.identifierAshly Arevalo: 0000-0002-1516-6148en_US
cg.creator.identifierSabine Douxchamps: 0000-0002-5286-0753en_US
cg.placeHanoi, Vietnamen_US
cg.subject.ciatLIVESTOCKen_US
cg.subject.ciatTROPICAL FORAGESen_US
dc.contributor.authorDung Van Phamen_US
dc.contributor.authorHoan Duong Congen_US
dc.contributor.authorArango, Jacoboen_US
dc.contributor.authorNghia Tran Daien_US
dc.contributor.authorKien Nguyen Trien_US
dc.contributor.authorArévalo, Ashlyen_US
dc.contributor.authorDouxchamps, Sabineen_US
dc.date.accessioned2020-02-17T20:44:41Zen_US
dc.date.available2020-02-17T20:44:41Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/107104en_US
dc.titleGreenhouse gas emissions from piggery and biogas digesters in the Red River Delta of Vietnamen_US
dcterms.abstractHigh demand for pork consumption in Vietnam has led to a shift of pig production systems from smallholder to industrial-scale farms, particularly in the Red River Delta. This production intensification also produces massive manure and urine quantities, leading to water, air, and soil pollution. The use of biogas plants has been seen as efficient to achieve in the same time a decrease in pollution, and a provision of biogas resources and bio-organic fertilizers. However, increasing pig head density has been causing great pressure on biogas digesters, as their size is not big enough for treatments anymore. Inappropriate utilization and management of biogas digesters can not only cause losses from pig wastes, but also contributes to increase greenhouse gas (GHG) emissions such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). This case study aims to identify the role and contributions of biogas digesters to better manage the sources of GHG emissions from pig wastes for different types of pig farms. Four provinces of the Red River Delta were selected to test the pig waste management efficiency of biogas digesters and measure GHG emissions from these systems. The findings show that CO2, CH4 and N2O emission rates from pig manure are at least twice as much what is allowed under the Vietnam national technical regulation on ambient air quality. However, the GHGs emission rate does not significantly differ between smallholder and industrial-scale farms in the four surveyed provinces. Sampling position (between inside piggeries and outside the outlet of biogas digesters) did not affect significantly GHG emissions rate. These results confirm that the pig waste management of biogas digesters for both smallholder and industrial-scale pig farms is not efficient and that efforts need to be invested to mitigate GHG emissions in pig production. Reducing pig density per piggery is highly recommended. The modification of biogas digester structure to separate solid pig manure and urine should also be considered. Otherwise, the application of other alternative aerobic or anaerobic digestion technologies should also be encouraged and promoted. Biogas digesters in pig production have a significant role to play in Vietnam government’s mitigation strategies, as well as from the perspective of biosafety and animal husbandry policies.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceScientistsen_US
dcterms.audienceAcademicsen_US
dcterms.bibliographicCitationVan Pham D; Duong Cong H; Arango J; Tran Dai N; Nguyen Tri K; Arévalo A; Douxchamps S. 2019. Greenhouse gas emissions from piggery and biogas digesters in the Red River Delta of Vietnam. International Center for Tropical Agriculture, Hanoi, Vietnam. 26p.en_US
dcterms.extent26 p.en_US
dcterms.issued2019-12en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherInternational Center for Tropical Agricultureen_US
dcterms.subjectforageen_US
dcterms.subjectlivestocken_US
dcterms.typeWorking Paperen_US

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