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Separation and recovery of Pd and Fe as nanosized metal sulphides by combining solvent extraction with biological strategies based on the use of sulphate-reducing bacteria

2019-04Journal article Restricted
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dc.contributor.authorNanusha, Mulatu Yohannes
dc.contributor.authorCarlier, Jorge
dc.contributor.authorCarvalho, Goncalo Ivo
dc.contributor.authorClara Costa, Maria
dc.contributor.authorPaiva, A. P.
dc.date.accessioned2020-07-24T10:52:38Z
dc.date.available2020-07-24T10:52:38Z
dc.date.issued2019-04
dc.description.abstractPlatinum group metals (PGMs) are highly demanding metals in current high-techs. However, their supply is limited due to their scarcity in natural resources and expensive mining. Solvent extraction in combination with microbial communities were employed for the recovery of palladium from aqueous media. Accordingly, extraction of Pd(II) by N,N'-dimethyl-N,N'-dicyclohexylthiodiglycolamide (DMDCHTDGA) in toluene and subsequent stripping by acidic thiourea were carried out, followed by bio-recovery employing biogenic sulphide generated from sulphate-reducing bacteria. The results revealed an excellent extraction performance of DMD-CHTDGA towards Pd(II) from metal complex mixtures in 2,4 and 6 M HCl. However, Fe(III) was co-extracted from 4 and 6 M HCl, being completely removed with deionized water during scrubbing. 94-99% of extracted Pd (II) were stripped using acidic thiourea. Over 99% of stripped Pd(II) were recovered using two solutions containing biogenic sulphide: an effluent from a bioremediation process of acid mine drainage treatment, and a supernatant solution from Postgate B nutrient medium. 78-99% of scrubbed Fe(III) were bio-recovered. Analysis of all the precipitates collected during palladium bio-recovery showed that they were composed by Pd and S, which is consistent with the synthesis of nanosized PdS. The elemental analysis of the iron precipitate also suggests the presence of iron sulphide. Henceforth, the method engaged is environmentally sustainable, safe and cheap, thus attractive to be employed, to separate and recover both Pd and Fe from waste materials.
dc.description.sponsorshipEuropean commissionEuropean Commission Joint Research Centre
dc.description.sponsorshipFCT Foundation for Science and TechnologyPortuguese Foundation for Science and Technology [29251]
dc.description.sponsorshipAlgarve's Regional Operational Program (CRESC Algarve 2020) through Portugal 2020
dc.description.sponsorshipEuropean Regional Development Fund (FEDER)European Union (EU)
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.seppur.2018.11.062
dc.identifier.issn1383-5866
dc.identifier.issn1873-3794
dc.identifier.urihttp://hdl.handle.net/10400.1/14387
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectLiquid-Llquid-extraction
dc.subjectPlatinum-group metals
dc.subjectHydrochloric-acid solutions
dc.subjectChloride solutions
dc.subjectSelective extraction
dc.subjectPrecipitation
dc.subjectPalladium
dc.subjectHydrogenation
dc.subjectPd(Ii)
dc.subjectPt(Iv)
dc.titleSeparation and recovery of Pd and Fe as nanosized metal sulphides by combining solvent extraction with biological strategies based on the use of sulphate-reducing bacteria
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F00612%2F2013/PT
oaire.citation.endPage756
oaire.citation.startPage747
oaire.citation.titleSeparation and Purification Technology
oaire.citation.volume212
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameCarlier
person.familyNameCosta
person.familyNamePaiva
person.givenNameJorge
person.givenNameMaria Clara
person.givenNameAna Paula
person.identifier.ciencia-id691D-A1BB-15CC
person.identifier.ciencia-id7110-A28E-3C8A
person.identifier.ciencia-idAB1D-468B-F3E9
person.identifier.orcid0000-0003-0675-2716
person.identifier.orcid0000-0003-1340-5237
person.identifier.orcid0000-0003-3858-9386
person.identifier.ridM-6189-2013
person.identifier.ridA-2064-2008
person.identifier.scopus-author-id7102166949
person.identifier.scopus-author-id35354952400
person.identifier.scopus-author-id7102683760
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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