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Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

2017Journal article Open access
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dc.contributor.authorRibeiro, Rui
dc.contributor.authorRodrigues, Raquel Oliveira
dc.contributor.authorSilva, Adrián
dc.contributor.authorTavares, Pedro B.
dc.contributor.authorCarvalho, Ana Maria
dc.contributor.authorFigueiredo, José
dc.contributor.authorFaria, Joaquim
dc.contributor.authorGomes, Helder
dc.date.accessioned2018-01-31T10:00:00Z
dc.date.accessioned2018-01-31T15:40:45Z
dc.date.available2018-01-31T10:00:00Z
dc.date.available2018-01-31T15:40:45Z
dc.date.issued2017
dc.description.abstractMagnetite, nickel and cobalt ferrites were prepared and encapsulated within graphitic shells, resulting in three hybrid magnetic graphitic nanocomposites. Screening experiments with a 4-nitrophenol aqueous model system (5 g L −1 ) allowed to select the best performing catalyst, which was object of additional studies with the liquid effluent resulting from a mechanical biological treatment plant for municipal solid waste. Due to its high content in bicarbonates (14350 mg L −1 ) and chlorides (2833 mg L −1 ), controlling the initial pH was a crucial step to maximize the performance of the catalytic wet peroxide oxidation (CWPO) treatment. The catalyst load was 0.5 g L −1 , a very low dosage when compared to the high chemical oxygen demand (COD) of the effluent − 9206 mg L −1 . At the optimum operating pH (i.e., pH = 6), ca. 95% of the aromaticity was converted and ca. 55% of COD and total organic carbon (TOC) of the liquid effluent was removed. The biodegradability of the liquid effluent was enhanced during the treatment by CWPO, as reflected by the 2-fold increase of the five-day biochemical oxygen demand (BOD 5 ) to COD ratio (BOD 5 /COD), namely from 0.21 (indicating non-biodegradability) to 0.42 (suggesting biodegradability of the treated wastewater). In addition, the treated water revealed no toxicity against selected bacteria. Lastly, a magnetic separation system was designed for in-situ catalyst recovery after the CWPO reaction stage. The high catalyst stability was demonstrated through five reaction/separation sequential experiments in the same vessel with consecutive catalyst reuse.en_EN
dc.description.sponsorshipThis work was financially supported by: Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDERthrough COMPETE2020 − Programa Operacional Competitividadee Internacionalizac¸ ão (POCI) − and by national funds throughFCT − Fundação para a Ciência e a Tecnologia; Project VALOR-COMP, funded by FEDER through Programme INTERREG V-A Spain− Portugal (POCTEP) 2014–2020. R.S. Ribeiro and R.O. Rodrigues acknowledge the FCT individual Ph.D. grants SFRH/BD/94177/2013 and SFRH/BD/97658/2013, respectively, with financing from FCT and the European Social Fund (through POPH and QREN). A.M.T. Silva acknowledges the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the European Social Fund and the Human Potential Operational Programme.
dc.description.sponsorshipAcknowledgmentsThis work was financially supported by: Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDERthrough COMPETE2020 − Programa Operacional Competitividadee Internacionalizac¸ ão (POCI) − and by national funds throughFCT − Fundac¸ ão para a Ciência e a Tecnologia; Project VALOR-COMP, funded by FEDER through Programme INTERREG V-A Spain− Portugal (POCTEP) 2014–2020. R.S. Ribeiro and R.O. Rodriguesacknowledge the FCT individual Ph.D. grants SFRH/BD/94177/2013 and SFRH/BD/97658/2013, respectively, with financing from FCTand the European Social Fund (through POPH and QREN).A.M.T. Silva acknowledges the FCT Investigator 2013 Programme(IF/01501/2013), with financing from the European Social Fund andthe Human Potential Operational Programme.
dc.description.versioninfo:eu-repo/semantics/publishedVersionen_EN
dc.identifier.citationRibeiro, Rui; Rodrigues, Raquel Oliveira; Silva, Adrián M.T.; Tavares, Pedro B.; Carvalho, Ana M.C.; Figueiredo, José L.; Faria, Joaquim; Gomes, Helder (2017). Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste. Applied Catalysis B: Environmental. ISSN 0926-3373. 219, p. 645-657en_EN
dc.identifier.doi10.1016/j.apcatb.2017.08.013en_EN
dc.identifier.issn0926-3373
dc.identifier.urihttp://hdl.handle.net/10198/15377
dc.language.isoeng
dc.peerreviewedyesen_EN
dc.relationMAGNETIC CARBON NANOSTRUCTURES AND STUDY OF THEIR TRANSPORT IN MICROFLUIDIC DEVICES FOR HYPERTHERMIA
dc.subjectCore-shell nanocompositesen_EN
dc.subjectHeterogeneous Fenton-like processen_EN
dc.subjectMagnetic separationen_EN
dc.subjectMechanical biological treatmenten_EN
dc.subjectProcess wateren_EN
dc.titleHybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid wasteen_EN
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMAGNETIC CARBON NANOSTRUCTURES AND STUDY OF THEIR TRANSPORT IN MICROFLUIDIC DEVICES FOR HYPERTHERMIA
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F94177%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F97658%2F2013/PT
oaire.fundingStreamSFRH
person.familyNameCarvalho
person.familyNameGomes
person.givenNameAna Maria
person.givenNameHelder
person.identifierID G-7399-2011
person.identifier.ciencia-idD31A-35AF-E2A9
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-5508-5935
person.identifier.orcid0000-0001-6898-2408
person.identifier.scopus-author-id20336503900
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.rightsopenAccessen_EN
rcaap.typearticleen_EN
relation.isAuthorOfPublication977f5254-f7c5-4c91-873f-2700ecd4692f
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery977f5254-f7c5-4c91-873f-2700ecd4692f
relation.isProjectOfPublication87df9a8b-083c-4efd-832f-32e56b5b6c1e
relation.isProjectOfPublication95f49ee8-5b1f-45de-b818-d9334a4d8d0e
relation.isProjectOfPublication.latestForDiscovery87df9a8b-083c-4efd-832f-32e56b5b6c1e

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