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Multistage treatment for olive mill wastewater: Assessing legal compliance and operational costs

2022Journal article Open access
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dc.contributor.authorVuppala, Srikanth
dc.contributor.authorPaulista, Larissa Oliveira
dc.contributor.authorMorais, Daniela F.S.
dc.contributor.authorPinho, Inês L.
dc.contributor.authorMartins, Ramiro
dc.contributor.authorGomes, Ana I.
dc.contributor.authorMoreira, Francisca C.
dc.contributor.authorVilar, Vítor J.P.
dc.date.accessioned2022-05-16T15:38:37Z
dc.date.available2022-05-16T15:38:37Z
dc.date.issued2022
dc.description.abstractA treatment train for the remediation of a raw olive mill wastewater (OMW) was investigated, aiming to comply with the emission limit values (ELVs) for direct discharge into water bodies. The following stages were proposed: (i) pre-treatment (filtration and sedimentation), (ii) coagulation, (iii) biological oxidation, and (iv) advanced oxidation process (AOP). Under the best-operating conditions for coagulation (0.8 g L- 1 of Al2(SO4)3, pH = 4.5), high removal of total suspended solids (TSS) (97%), turbidity (98%), and phenols (57%) was achieved, along with a decrease in the inhibition of the biological activity. A subsequent biological oxidation stage provided a high removal of organic matter (chemical oxygen demand (COD) removal of 73%). For the third stage, three AOPs were applied and compared – photo-Fenton with UVA radiation (PF-UVA), anodic oxidation (AO), and ozonation (O3). After 3 h of treatment, the PF-UVA process (pH = 2.8, [H2O2] = 400–500 mg L- 1, [Total dissolved iron]0 = 100 mg L- 1) allowed to meet the ELV for COD, but the other parameters exceeded the threshold, while O3 process (inlet concentration = 100 mg O3 Ndm- 3, gas flow = 0.2 Ndm3 min- 1) allowed to comply with phenols, TSS, and sulfate limits. The AO process (current density up to 200 mA cm- 2) was the least efficient AOP for all studied parameters. The operational costs for the coagulation and biological oxidation stages were estimated at 1.20 € m- 3. Regarding the most effective AOPs, ozonation presented an estimated cost 2.3-fold higher than PF-UVA (11.9 € m- 3 vs. 5.2 € m- 3).pt_PT
dc.description.sponsorshipThis work was financially supported by (i) LA/P/0045/2020 (ALiCE), UIDB/50020/2020 and UIDP/50020/2020 (LSRE-LCM), funded by national funds through FCT/MCTES (PIDDAC), and (ii) Project NORTE-01-0247-FEDER-072124, Bagaço+Valor - Tecnologia Limpa para a Valorização dos Subprodutos do Bagaço na Indústria Extratora de Azeite, funded by the European Regional Development Fund (ERDF). Srikanth Vuppala acknowledges the Joint Research Projects for the International Mobility of the XXXI and XXXII cycle PhD students for the project: CHEMBIOCAT, La Sapienza University of Rome. Larissa O. Paulista and Daniela F.S. Morais acknowledge their Ph.D. scholarships supported by FCT (SFRH/BD/137639/2018 and SFRH/BD/146476/2019, respectively). Francisca C. Moreira and Vítor J.P. Vilar acknowledge the FCT Individual Call to Scientific Employment Stimulus 2017 (CEECIND/02196/2017 and CEECIND/01317/2017, respectively).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVuppala, Srikanth; Paulista, Larissa O.; Morais, Daniela F.S.; Pinho, Inês L.; Martins, Ramiro; Gomes, Ana I.; Moreira, Francisca C.; Vilar, Vítor J.P. (2022). Multistage treatment for olive mill wastewater: Assessing legal compliance and operational costs. Journal of Environmental Chemical Engineering. ISSN 2213-3437. 10:3, p. 1-13pt_PT
dc.identifier.doi10.1016/j.jece.2022.107442pt_PT
dc.identifier.issn2213-3437
dc.identifier.urihttp://hdl.handle.net/10198/25458
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationLA/P/0045/2020pt_PT
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationIntensifying CO2 photoreduction into value-added fuels using microscale illumination
dc.relationAdvances in photoelectrocatalysis: A continuous-flow photoelectrocatalytic static mixer microreactor applied to the synthesis of high-value organic chemicals
dc.relationCEECIND/01317/2017pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectOlivept_PT
dc.subjectWastewaterpt_PT
dc.titleMultistage treatment for olive mill wastewater: Assessing legal compliance and operational costspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleIntensifying CO2 photoreduction into value-added fuels using microscale illumination
oaire.awardTitleAdvances in photoelectrocatalysis: A continuous-flow photoelectrocatalytic static mixer microreactor applied to the synthesis of high-value organic chemicals
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50020%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F137639%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F146476%2F2019/PT
oaire.citation.issue3pt_PT
oaire.citation.startPage107442pt_PT
oaire.citation.titleJournal of Environmental Chemical Engineeringpt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMartins
person.givenNameRamiro
person.identifier.ciencia-idEA17-F39C-29C7
person.identifier.orcid0000-0003-4327-7782
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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