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Leather tanning sludge in cement mortar: Sustainable valorisation

2024Journal article Open access
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dc.contributor.authorMartins, Ramiro
dc.contributor.authorCabral, Rafaela Mulinari
dc.contributor.authorPietrobelli, Juliana Martins Teixeira
dc.date.accessioned2024-06-25T13:13:50Z
dc.date.available2024-06-25T13:13:50Z
dc.date.issued2024
dc.description.abstractThis study aims to investigate the valorisation of sludge from Leather Tannery Wastewater Treatment Plants (LTWWTP) by incorporating it into cement mortars. Theoretical framework: The substantial quantity of waste generated by industries coupled with the scarcity of natural resources calls for the analysis, development, and implementation of treatment methods to recover and reuse materials, thereby minimising the environmental impact of waste disposal. The leather tanning industry, a significant polluter due to its use of hazardous and heavy materials, requires sustainable solutions for waste management. One promising approach is the incorporation of waste into cementitious matrices. Method: Three scenarios were examined: low-moisture sludge, ash obtained via incineration, and wet oxidation. Test specimens were prepared with varying proportions of cement replacement (0, 3, 5, 7, and 10%), and their flexural and compressive strengths were evaluated. Additionally, chemical analyses were conducted to assess solubility. Results and Conclusion: The results indicate that sludge can be used in small proportions without compromising the mechanical strength of the mortar. Substituting 10% cement with ash using the INC-2 incineration method improved mortar quality, exhibiting a higher compressive strength of 41 MPa and minimal water absorption (3.28%). Research implications: Drawing from these promising findings, it can be confidently asserted that utilising WWTP sludge in mortar is a practical, eco-conscious solution for civil construction. Furthermore, it is a pivotal step towards addressing the challenge of hazardous sludge disposal. Originality/value: The findings from this research will contribute to sustainable waste management practices and pave the way for responsible and eco-friendly utilisation of industrial waste in cementitious materials, thus minimising environmental burdens.pt_PT
dc.description.sponsorshipNational funds supported this work through FCT/MCTES (PIDDAC): LSRE-LCM, UIDB/50020/2020 (DOI:10.54499/UIDB/50020/2020) and UIDP/50020/2020 (DOI: 10.54499/UIDP/50020/2020); and ALiCE LA/P/0045/2020 (DOI: 10.54499/LA/P/0045/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMartins, Ramiro; Cabral, Rafaela; Pietrobelli, Juliana (2024). Leather tanning sludge in cement mortar: Sustainable valorisation. Revista de Gestão Social e Ambiental. ISSN 1981-982X. 18:8, p. 1-18pt_PT
dc.identifier.doi10.24857/rgsa.v18n8-043pt_PT
dc.identifier.issn1981-982X
dc.identifier.urihttp://hdl.handle.net/10198/29929
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherANPADpt_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.relationALICE - Associate Laboratory in Chemical Engineering
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCement mortarpt_PT
dc.subjectCircular economypt_PT
dc.subjectRecyclingpt_PT
dc.subjectSludgept_PT
dc.subjectTanner industrypt_PT
dc.titleLeather tanning sludge in cement mortar: Sustainable valorisationpt_PT
dc.title.alternativeLodo curtido de cuero en mortero de cemento: valorización sosteniblept_PT
dc.title.alternativeLamas de curtimenta em cimento argamassa: valorização sustentávelpt_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.awardTitleALICE - Associate Laboratory in Chemical Engineering
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/6817 - DCRRNI ID/LA%2FP%2F0045%2F2020/PT
oaire.citation.endPage18pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleRevista de Gestão Social e Ambientalpt_PT
oaire.citation.volume18pt_PT
oaire.fundingStream6817 - DCRRNI ID
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
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoverybf713e37-c17f-4a4e-8323-a7b770a038bf
relation.isProjectOfPublication79ed495f-40dc-45d0-b98c-7e777db59e9b
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