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Heavy metals removal on leachate for use as fertilizers

2019Conference object Open access
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dc.contributor.authorCardoso, Jonathan
dc.contributor.authorVertonha, Maria Thais
dc.contributor.authorCabral, David
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorRoman, Fernanda
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorArrobas, Margarida
dc.contributor.authorBrito, Paulo
dc.contributor.authorGomes, Helder
dc.date.accessioned2020-01-14T14:55:01Z
dc.date.available2020-01-14T14:55:01Z
dc.date.issued2019
dc.description.abstractMunicipal landfill leachates typically contain high ammonium and organic concentration which could contribute to its use in agriculture, leading to the reduction of costs for the respective waste treatment plants. However, due to the nature of the leachates, they may contain phytotoxic substances. The landfillleachate samples differ by many factors such as the composition of the treated waste, elapsed time, geochemical and weather conditions [1-3]. Taking into account these considerations, leachate samples from a storage tank at the "Residuos do Nordeste, ElM" mechanical and biological treatment plant, were collected in February 2019, and stored :at 4°C. The leachate samples were processed using activated carbon adsorbents produced from the compost of the referred company, and H2S04 activated clays obtained from a partnership with a Kazakhsta1n institution. The leachate samples were mixed with the adsorbents for 48 hours, centrifugated and the supernatant was reserved. TOC analysis in a Shimadzu TOC-L equipment and metals quantification by atomic absorption spectroscopy using a Varian SpectrAA 220 apparatus were carried out. :Selected results are presented in Fig. 1. The original leachate presents an organic carbon content closer to the requirements of the EU legislation for liquid organo-mineral fertilizers. The activated carbon promoted greater TOC removal in comparison with the activated clays. Both materials showed interaction with the heavy metals. However, Cr still remains present in higher conten1ts and K presents lower values than the legislation requirements. Overall, the activated carbons presented a greater potential for heavy metals removal. However, ion-exchange resins will be tested for a more efficient heavy metals removal to minimize possible secondary elimination of components sue:h as nutrients and organic carbon.pt_PT
dc.description.sponsorshipThis work was financially supported by: Project VALORCOMP, funded by FEDER through Programme INTERREG V-A Spain- Portugal {POCTEP) 2014-2020 and Associate Laboratory LSRE-LCM UID/EQU/50020/2019 - funded by national funds through FCT/MCTES {PIDDAC).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCardoso, Jonathan; Vertonha, Maria; Cabral, David; Silva, Adriano; Roman, Fernanda; Diáz de Tuesta, Jose Luis; Arrobas, Margarida; Brito, Paulo; Gomes, Helder (2019). Heavy metals removal on leachate for use as fertilizers. In XXV Encontro Galego-Português de Química. Santiago de Compostela. ISBN 978-84-09-16320-5pt_PT
dc.identifier.isbn978-84-09-16320-5
dc.identifier.urihttp://hdl.handle.net/10198/20358
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.titleHeavy metals removal on leachate for use as fertilizerspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceSantiago de Compostela, Espanhapt_PT
oaire.citation.startPage109pt_PT
oaire.citation.titleXXV Encontro Galego-Portugues de Quimicapt_PT
person.familyNameCabral
person.familyNameSilva
person.familyNameRoman
person.familyNameDíaz de Tuesta
person.familyNameArrobas
person.familyNameBrito
person.familyNameGomes
person.givenNameDavid
person.givenNameAdriano S.
person.givenNameFernanda
person.givenNameJose Luis
person.givenNameMargarida
person.givenNamePaulo
person.givenNameHelder
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person.identifier.ciencia-id3E14-5049-B09D
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person.identifier.ciencia-id971C-B85B-1EC0
person.identifier.ciencia-idA31A-D845-A6E2
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0002-7424-5903
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0001-5360-5298
person.identifier.orcid0000-0003-2408-087X
person.identifier.orcid0000-0002-4652-485X
person.identifier.orcid0000-0003-1805-0252
person.identifier.orcid0000-0001-6898-2408
person.identifier.ridD-9785-2017
person.identifier.scopus-author-id55755821600
person.identifier.scopus-author-id8575728800
person.identifier.scopus-author-id31168231800
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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