Repository logo
 
Publication

Valorisation of phosphorus extracted from dairy cattle slurry and municipal solid wastes digestates as a fertilizer

2016Journal article Restricted access
Simple item page
datacite.subject.sdg11:Cidades e Comunidades Sustentáveispt_PT
dc.contributor.authorOliveira, V.
dc.contributor.authorOttosen, Lisbeth M.
dc.contributor.authorLabrincha, J. A.
dc.contributor.authorFerreira, Célia
dc.date.accessioned2023-07-03T13:10:01Z
dc.date.available2023-07-03T13:10:01Z
dc.date.issued2016
dc.description.abstractPhosphorus is a vital cell component and an essential and irreplaceable element. Yet at the current rate of exploitation, the phosphate’s reserves will be fast depleted. Dairy cattle slurry and digestates from anaerobic digestion of municipal solid wastes (MSW) are organic wastes containing phosphorus which can potentially be used as a secondary source of this nutrient. The present study investigated the effect of pH in phosphorus release from these wastes using acid and base extraction followed by phosphorus recovery via precipitation, targeting the production of a fertilizer. Results showed that when using HNO3, 100 % of P content was extracted from dairy cattle slurry (2.0\pH\3.3) and 90 % from MSW digestates (1.2\pH\1.5). The maximum extraction was obtained after 2.5 h for dairy cattle slurry and 48 h for MSW digestates. The extraction efficiencies using NaOH were only 22 % for dairy cattle slurry (12.9\pH\13.4) and 9 % for MWS digestates (13.0\pH\13.4). Phosphorus precipitation from extracted solutions was carried out at a molar ratio of 1:1:1 for Mg:N:P and at pH around 8.0. Analysis of the harvested precipitates by XRD and SEM–EDS ruled out the formation of struvite, but validated the formation of amorphous calcium phosphates, a potential fertilizer that can help to close the cycle of this nutrient. During the process, heavy metals might become enriched in the precipitates. In the perspective of producing a fertilizer this is an undesirable process, and one that should be taken into account when considering phosphorus recovery from wastes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s12649-015-9466-0pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.2/14179
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationRAW - Recovering nutrients from wastes: eco-innovative solutions to transform waste into resources
dc.subjectPhosphorus recoverypt_PT
dc.subjectStruvitept_PT
dc.subjectCalcium phosphatept_PT
dc.subjectDairy cattlept_PT
dc.subjectAnaerobic digestionpt_PT
dc.subjectMunicipal solid wastept_PT
dc.titleValorisation of phosphorus extracted from dairy cattle slurry and municipal solid wastes digestates as a fertilizerpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleRAW - Recovering nutrients from wastes: eco-innovative solutions to transform waste into resources
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F100717%2F2014/PT
oaire.citation.endPage869pt_PT
oaire.citation.startPage861pt_PT
oaire.citation.titleWaste and Biomass Valorizationpt_PT
person.familyNameFerreira
person.givenNameCélia
person.identifier.ciencia-id931E-FBDE-2098
person.identifier.orcid0000-0002-7456-2538
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione30010dd-0512-4da6-a0c9-910b47f18b4f
relation.isAuthorOfPublication.latestForDiscoverye30010dd-0512-4da6-a0c9-910b47f18b4f
relation.isProjectOfPublicationbfc45dda-8ea4-41eb-a77f-052f571a7454
relation.isProjectOfPublication.latestForDiscoverybfc45dda-8ea4-41eb-a77f-052f571a7454

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
2016_B2_Oliveira-etal-WAVE-CattleSlurry.pdf
Size:
1.34 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.97 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Ambiente e Sustentabilidade | Artigos em revistas internacionais / Papers in international journals