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Optimizing bacterial nanocellulose production from eucalyptus bark: A circular approach to wastewater management and resource recovery

2025-01Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.fosEngenharia e Tecnologia::Engenharia do Ambiente
datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorRodrigues, Ana Cristina
dc.contributor.authorMartins, Daniela
dc.contributor.authorDuarte, Maria Salomé
dc.contributor.authorMarques, Susana
dc.contributor.authorGama, Miguel
dc.contributor.authorDourado, Fernando
dc.contributor.authorCarvalho, Ricardo
dc.contributor.authorCavaleiro, Ana
dc.date.accessioned2025-03-28T15:54:25Z
dc.date.available2025-03-28T15:54:25Z
dc.date.issued2025-01
dc.description.abstractABSTRACT: The production cost of bacterial nanocellulose (BNC) is a major limitation to its widespread use. However, this limitation can be addressed by using alternative low-cost substrates and high-yield strains. Agro-industrial wastederived substrates offer a cost-effective and sustainable solution, but their high organic load often requires additional downstream wastewater treatments. Here, we optimized static BNC production using eucalyptus bark hydrolysate (EBH) as a low-cost carbon source and proposed a circular approach for wastewater management. Optimization was performed using response surface methodology - central composite design. The optimized EBH medium yielded a 39.7-fold increase compared to standard medium, with a maximum BNC production of 8.29 f 0.21 g/L. Fermentation wastewater only (WaF) and combined with BNC washing streams (WaW) revealed high levels of organic matter, namely chemical oxygen demand (COD) of 159.0 f 2.0 and 41.1 f 0.3 g/L, and volatile solids (VS) of 99.5 f 0.9 and 26.3 f 0.2 g/L, respectively, requiring treatment before disposal. A sequential anaerobic-aerobic digestion was investigated for wastewater treatment and valorisation. Anaerobic digestion proved to be effective in treating the wastewater: methanization percentages over 87 % were achieved, and methane productions of 486 f 2 and 544 f 30 L/kg VS were obtained from WaF and WaW, respectively. Subsequent aerobic treatment was unsuccessful in further reducing COD levels (approximately 1.5 g/L). Notably, treated wastewater was recycled into the production process up to 45 % without affecting the BNC yield. This study provides valuable insights into the optimization of BNC production from lignocellulosic biomass and the management of wastewater streams, contributing to the development of a more sustainable and economically viable process.eng
dc.identifier.citationRodrigues, A.C., Martins, D., Duarte, M.S., Carvalho, R., Marques, S., Cavaleiro, A., Gama, M. & Dourado, F. (2025) Optimizing bacterial nanocellulose production from eucalyptus bark: A circular approach to wastewater management and resource recovery. In: Journal of Environmental Chemical Engineering, 2025, vol. 13 (2), article 115442. https://doi.org/10.1016/j.jece.2025.115442
dc.identifier.doi10.1016/j.jece.2025.115442
dc.identifier.issn2213-3437
dc.identifier.urihttp://hdl.handle.net/10400.9/5629
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCentre of Biological Engineering of the University of Minho
dc.relationAssociate Laboratory on Biotechnology, Bioengineering and microELectromechanical Systems
dc.relationTuning oxidation-reduction potential and microbial interactions to boost methane production from organic wastes/wastewaters
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S221334372500137X?via%3Dihub
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectEucalyptus residues
dc.subjectWaste valorization
dc.subjectWastewater treatment
dc.subjectLignocellulosic biomass
dc.subjectAnaerobic digestion
dc.titleOptimizing bacterial nanocellulose production from eucalyptus bark: A circular approach to wastewater management and resource recoveryeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre of Biological Engineering of the University of Minho
oaire.awardTitleAssociate Laboratory on Biotechnology, Bioengineering and microELectromechanical Systems
oaire.awardTitleTuning oxidation-reduction potential and microbial interactions to boost methane production from organic wastes/wastewaters
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04469%2F2020/PT
oaire.awardURIhttp://hdl.handle.net/10400.9/5627
oaire.awardURIhttp://hdl.handle.net/10400.9/5628
oaire.citation.issue2
oaire.citation.titleJournal of Environmental Chemical Engineering
oaire.citation.volume13
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND5ed
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRodrigues
person.familyNameMartins
person.familyNameDuarte
person.familyNameMarques
person.familyNameCarvalho
person.familyNameCavaleiro
person.givenNameAna Cristina
person.givenNameDaniela
person.givenNameMaria Salomé
person.givenNameSusana
person.givenNameRicardo
person.givenNameAna
person.identifier.orcid0000-0002-5015-6842
person.identifier.orcid0000-0001-8125-8326
person.identifier.orcid0000-0003-4645-908X
person.identifier.orcid0000-0001-9153-4080
person.identifier.orcid0000-0003-3120-3727
person.identifier.orcid0000-0002-7999-4620
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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