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Effects of the Addition of Different Additives before Mechanical Separation of Pig Slurry on Composition and Gaseous Emissions

2022-07-05Journal article Open access
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dc.contributor.authorPereira, José L.S.
dc.contributor.authorPerdigão, Adelaide
dc.contributor.authorTavares, Ana
dc.contributor.authorSilva, Maria E. F.
dc.contributor.authorBrás, Isabel
dc.contributor.authorFerreira Wessel, Dulcineia
dc.date.accessioned2022-08-29T09:04:21Z
dc.date.available2022-08-29T09:04:21Z
dc.date.issued2022-07-05
dc.date.updated2022-08-08T15:15:10Z
dc.description.abstractThe treatment of animal slurry is used to improve management on a farm scale. The aim of this laboratory study was to assess the effects of the addition of the additives biochar, alum and clinoptilolite before the mechanical separation of whole pig slurry (WS) on the characteristics and emission of NH3 , N2O, CO2 and CH4 from solid (SF) and liquid fractions (LF). The additives were mixed with WS (5% w/w), followed by separation, in a total of 12 treatments with 3 replicates, including the controls and WS with additives. Gaseous emissions were measured for 30 d by a photoacoustic multigas monitor, and initial characteristics of the slurries were assessed. The results indicated that the separation of the WS modified the initial physicochemical characteristics and increased the GWP emissions of the SF and LF, but not the NH3 losses. However, the addition of additives before separation increased the nutrient value and reduced the GWP emissions from the SF and LF. Additionally, just the additive alum was effective in the reduction of E. coli. The additives led to significant reductions in NH3 and N2O emissions, with higher reductions in NH3 losses for alum (51% for NH3 ) and similar N2O losses for all additives (70% for N2O) observed, whereas the CO2 and CH4 emissions were reduced by biochar (25% for CO2 and 50% for CH4 ) and alum (33% for CO2 and 30% for CH4 ) but not by clinoptilolite. Although the additives had a positive effect on slurry management, it can be concluded that the addition of alum before mechanical separation has the potential to be the best mitigation measure because it improves the nutrient content and sanitation and decreases gaseous losses from slurry management.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPereira, J.L.S.; Perdigão, A.; Tavares, A.; Silva, M.E.F.; Brás, I.; Wessel, D.F. Effects of the Addition of Different Additives before Mechanical Separation of Pig Slurry on Composition and Gaseous Emissions. Agronomy 2022, 12, 1618. https://doi.org/10.3390/ agronomy12071618pt_PT
dc.identifier.doi10.3390/agronomy12071618pt_PT
dc.identifier.issn2073-4395
dc.identifier.slugcv-prod-3030641
dc.identifier.urihttp://hdl.handle.net/10400.19/7320
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectammoniapt_PT
dc.subjectgreenhouse gasespt_PT
dc.subjectmitigation measurept_PT
dc.subjectsolid liquid separationpt_PT
dc.subjectslurry additivept_PT
dc.titleEffects of the Addition of Different Additives before Mechanical Separation of Pig Slurry on Composition and Gaseous Emissionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue7pt_PT
oaire.citation.startPage1618pt_PT
oaire.citation.titleAgronomypt_PT
oaire.citation.volume12pt_PT
person.familyNamePereira
person.familyNamePerdigão
person.familyNameLopes Brás
person.familyNameFerreira Wessel
person.givenNameJosé Luís da Silva
person.givenNameAdelaide
person.givenNameIsabel Paula
person.givenNameDulcineia
person.identifier444832
person.identifier.ciencia-id6D17-2407-9EA8
person.identifier.ciencia-id5214-3B71-2F01
person.identifier.ciencia-idE711-EB2D-3A05
person.identifier.ciencia-id4E1F-7223-5CE4
person.identifier.orcid0000-0001-8078-8915
person.identifier.orcid0000-0001-6080-7760
person.identifier.orcid0000-0002-2252-381X
person.identifier.orcid0000-0003-4077-0897
person.identifier.ridE-4375-2012
person.identifier.ridT-4917-2017
person.identifier.scopus-author-id7401895587
person.identifier.scopus-author-id7102490831
rcaap.cv.cienciaidE711-EB2D-3A05 | Isabel Paula Lopes Braz
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf6530c4c-7176-4ba1-b46d-5e54d022eb6a
relation.isAuthorOfPublication41fa72ef-76e9-45fa-b180-be89895e44a5
relation.isAuthorOfPublication6ec9bc01-46b1-4864-afbc-b6e89a2d7a2e
relation.isAuthorOfPublication17befc1d-0738-4b27-b19d-caa3f0f494b9
relation.isAuthorOfPublication.latestForDiscovery6ec9bc01-46b1-4864-afbc-b6e89a2d7a2e

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