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dc.contributor.authorLapo Calderón, Byron Gonzalo
dc.contributor.authorPavón Regaña, Sandra
dc.contributor.authorBertau, Martin
dc.contributor.authorDemey Cedeño, Hary
dc.contributor.authorMeneses, Miguel
dc.contributor.authorSastre Requena, Ana María
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2023-05-11T12:36:57Z
dc.date.available2023-05-11T12:36:57Z
dc.date.issued2023-03-27
dc.identifier.citationLapo, B. [et al.]. Neodymium recovery from the aqueous phase using a residual material from saccharified banana-rachis/polyethylene-glycol. "Polymers", 27 Març 2023, vol. 15, núm. 7, article 166.
dc.identifier.issn2073-4360
dc.identifier.urihttp://hdl.handle.net/2117/387305
dc.description.abstractNeodymium (Nd) is a key rare earth element (REE) needed for the future of incoming technologies including road transport and power generation. Hereby, a sustainable adsorbent material for recovering Nd from the aqueous phase using a residue from the saccharification process is presented. Banana rachis (BR) was treated with cellulases and polyethylene glycol (PEG) to produce fermentable sugars prior to applying the final residue (BR–PEG) as an adsorbent material. BR–PEG was characterized by scanning electron microscopy (SEM), compositional analysis, pH of zero charge (pHpzc), Fourier transform infrared analysis (FTIR) and thermogravimetric analysis (TGA). A surface response experimental design was used for obtaining the optimized adsorption conditions in terms of the pH of the aqueous phase and the particle size. With the optimal conditions, equilibrium isotherms, kinetics and adsorption–desorption cycles were performed. The optimal pH and particle size were 4.5 and 209.19 µm, respectively. BR–PEG presented equilibrium kinetics after 20 min and maximum adsorption capacities of 44.11 mg/g. In terms of reusage, BR–PEG can be efficiently reused for five adsorption–desorption cycles. BR–PEG was demonstrated to be a low-cost bioresourced alternative for recovering Nd by adsorption.
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshNeodymium
dc.subject.otherRare earth recovery
dc.subject.otherSorption
dc.subject.otherLignocellulosic waste
dc.subject.otherPEG
dc.titleNeodymium recovery from the aqueous phase using a residual material from saccharified banana-rachis/polyethylene-glycol
dc.title.alternativeRecuperación de neodimio de fase acuosa mediante un material residual del proceso de sacarificación de raquiz de banano con polietilen glicol
dc.typeArticle
dc.subject.lemacNeodimi
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.identifier.doi10.3390/polym15071666
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2073-4360/15/7/1666
dc.rights.accessOpen Access
local.identifier.drac35629247
dc.description.versionPostprint (author's final draft)
local.citation.authorLapo, B.; Pavón, S.; Bertau, M.; Demey, H.; Meneses, M.; Sastre, A.
local.citation.publicationNamePolymers
local.citation.volume15
local.citation.number7, article 166


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