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Optimization of atmospheric carbonation in the integrated treatment immediate one-step lime precipitation and atmospheric carbonation. The case study of slaughterhouse effluents

2023-03Journal article Open access
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dc.contributor.authorMadeira, Luís Miguel
dc.contributor.authorCarvalho, Fátima
dc.contributor.authorAlmeida, Adelaide
dc.contributor.authorRibau Teixeira, Margarida
dc.date.accessioned2023-02-02T10:10:05Z
dc.date.available2023-02-02T10:10:05Z
dc.date.issued2023-03
dc.description.abstractLong carbonation time has been a common feature in the integrated process composed by immediate one-step lime precipitation and atmospheric carbonation. This work aims to understand how carbonation time can be influenced by reaction pH, as well as how reactor area/volume ratio affects carbonation time and ammonia removal, using slaughterhouse wastewater due to its variable characteristics. In the integrated immediate one-step lime precipitation and atmospheric carbonation process, the immediate one-step lime precipitation re-sults showed that the reaction pH and the type of slaughterhouse wastewater influenced the removal, however, removals were the highest at reaction pH 12. In atmospheric carbonation process, the carbonation time required to reach pH 8 was independent of the reaction pH used. Additionally, at reaction pH 12, the reactor area/volume ratios applied (from 0 to 155.4 m2/m3) showed that higher reactor area/volume ratios caused lower carbonation time, but ammonia removal was not affected. For reactor area/volume ratios of 5 and 155.4 m2/m3, 15 and 1 days were spent to reduce the pH from 11.9 to 8.2, with removals of 71 and 82.6% for NH4+ and 10 and 79.1% for calcium, respectively. High removals of total Kjeldahl nitrogen (>= 71%), biological oxygen demand (>= 80%), ammonium nitrogen (>= 52%), total phosphorus (98%), total suspended solids (>= 52%), turbidity (>= 62%), absorbance at 254 nm (>= 87%), absorbance at 410 nm (>= 83%) and oils & fats (>= 47%) were obtained using immediate one-step lime precipitation and atmospheric carbonation integrated process to treatment slaughter-house wastewater, indicating that the these process is an efficient pretreatment for slaughterhouse wastewaters.pt_PT
dc.description.sponsorshipPOCI-01-0247-FEDER-046959
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.rineng.2022.100807pt_PT
dc.identifier.issn2590-1230
dc.identifier.urihttp://hdl.handle.net/10400.1/18985
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationVALORTECWATER - Valorization of slaughterhouse wastewater for the plant production using different eco-innovative technologies.
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectImmediate one-step lime precipitationpt_PT
dc.subjectAtmosphericCO2 carbonationpt_PT
dc.subjectSlaughterhouse wastewaterpt_PT
dc.subjectAreapt_PT
dc.subjectVolume ratiopt_PT
dc.subjectPretreatmentpt_PT
dc.titleOptimization of atmospheric carbonation in the integrated treatment immediate one-step lime precipitation and atmospheric carbonation. The case study of slaughterhouse effluentspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleVALORTECWATER - Valorization of slaughterhouse wastewater for the plant production using different eco-innovative technologies.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F137209%2F2018/PT
oaire.citation.startPage100807pt_PT
oaire.citation.titleResults in Engineeringpt_PT
oaire.citation.volume17pt_PT
oaire.fundingStreamOE
person.familyNameMadeira
person.familyNameRibau Teixeira
person.givenNameLuís Miguel Simão
person.givenNameMargarida
person.identifier.ciencia-idA214-0A87-64EC
person.identifier.ciencia-id9111-87FB-26AA
person.identifier.orcid0000-0001-7674-8881
person.identifier.orcid0000-0002-2153-3282
person.identifier.ridB-9012-2012
person.identifier.scopus-author-id55760206500
person.identifier.scopus-author-id8988625600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationadfcbe65-54a7-4cce-b874-bb8e2bdc6167
relation.isAuthorOfPublication.latestForDiscoveryadfcbe65-54a7-4cce-b874-bb8e2bdc6167
relation.isProjectOfPublication0b416b15-98c3-4304-af29-2ef7bce67641
relation.isProjectOfPublication.latestForDiscovery0b416b15-98c3-4304-af29-2ef7bce67641

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