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Response surface method-driven design of experiments for the synthesis of fly ash-based geopolymers in the gallic acid optimized removal from wastewater

2025Journal article Open access
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dc.contributor.authorSilva, Ana P. F.
dc.contributor.authorNatal, Ana Paula Silva
dc.contributor.authorBaldo, Arthur Pietrobon
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorMarin, Pricila
dc.contributor.authorPeres, José A.
dc.contributor.authorGomes, Helder
dc.date.accessioned2025-02-10T11:11:00Z
dc.date.available2025-02-10T11:11:00Z
dc.date.issued2025
dc.description.abstractThe growing need for sustainable wastewater treatment solutions has led to exploring alternative materials to explore large-scale and reliable technologies. This study focuses on optimizing the synthesis of geopolymers based on fly ash using a Box-Behnken experimental design to enhance their adsorption efficiency for phenolic compounds, as gallic acid model pollutant which are widely found in wastewater leaching from landfills. Fifteen geopolymer samples were synthesized, characterized, and tested for adsorption performance. Various techniques were employed, including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy. The optimization process highlighted the significance of the Si/Al mass ratio, NaOH molar concentration, and Na₂SiO₃/NaOH as variables in the geopolymers production. Geopolymer samples demonstrated significant adsorption capacities, with GP_2.0_10_2.5 achieving a maximum adsorption capacity of 75.8 mg g-1. Kinetic studies indicated that the pseudo-first-order model best described the adsorption process. At the same time, equilibrium data fitted well with both Langmuir and Freundlich isotherms, with GP_2.0_10_2.5 showing the best fit for the Langmuir model. These findings reveal the potential of geopolymers derived from fly ash as cost-effective adsorbents in wastewater treatment, promoting the reuse of industrial waste within the framework of a Circular Economy.pt_PT
dc.description.sponsorshipThis work was supported by national funds supported this work through FCT/MCTES (PIDDAC): CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/ UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI: 10.54499/ LA/P/0007/2020). We would also like to thank the scientific collaboration under Base-UIDB/50020/2020, CQVR (UIDB/00616/2020). The authors are grateful to Sociedade Ponto Verde for the financial support through the project “Avaliação de Ciclo de Vida de materiais geopoliméricos obtidos a partir da valorização de resíduos sólidos urbanos”. Ana Paula Silva is supported by the doctoral Grant PRT/BD/153090/ 2021 financed by FCT and with funds from NORTE2020, under MIT Portugal Program. Jose L. Diaz De Tuesta acknowledges the financial support through the program of Atracción al Talento of Comunidad de Madrid (Spain) for the individual research grant and project with reference 2022-T1/AMB-23946.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFerreira, Ana Paula; Natal, Ana Paula S.; Baldo, Arthur P.; Silva, Adriano S.; Diaz de Tuesta, Jose L.; Marin, Pricila; Peres, José A.; Gomes, Helder T. (2025). Response surface method-driven design of experiments for the synthesis of fly ash-based geopolymers in the gallic acid optimized removal from wastewater. Chemical Engineering Journal Advances. ISSN 2666-8211. 21, p. 1-14pt_PT
dc.identifier.doi10.1016/j.ceja.2024.100703pt_PT
dc.identifier.issn2666-8211
dc.identifier.urihttp://hdl.handle.net/10198/31132
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationChemistry Center - Vila Real
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDesign of experimentspt_PT
dc.subjectBox-Behnken designpt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectPhenolic compounds removalpt_PT
dc.subjectWaste valorizationpt_PT
dc.subjectFly-ashpt_PT
dc.subjectEco-friendly materialspt_PT
dc.titleResponse surface method-driven design of experiments for the synthesis of fly ash-based geopolymers in the gallic acid optimized removal from wastewaterpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleChemistry Center - Vila Real
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00616%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PRT%2FBD%2F153090%2F2021/PT
oaire.citation.endPage14pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleChemical Engineering Journal Advancespt_PT
oaire.citation.volume21pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSilva
person.familyNameSilva
person.familyNameGomes
person.givenNameAna P. F.
person.givenNameAdriano S.
person.givenNameHelder
person.identifierhttps://www.researchgate.net/profile/Ana-Ferreira-Da-Silva-3
person.identifier.ciencia-id991F-2DB8-3246
person.identifier.ciencia-id3E14-5049-B09D
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-8979-8407
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0001-6898-2408
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
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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