000151394 001__ 151394
000151394 005__ 20250307114716.0
000151394 0247_ $$2doi$$a10.1016/j.desal.2025.118722
000151394 0248_ $$2sideral$$a143109
000151394 037__ $$aART-2025-143109
000151394 041__ $$aeng
000151394 100__ $$0(orcid)0000-0002-7130-8032$$aMoriones, Andoni$$uUniversidad de Zaragoza
000151394 245__ $$aMetal-organic frameworks/graphene oxide nanohybrids to control pore wetting in membrane distillation
000151394 260__ $$c2025
000151394 5060_ $$aAccess copy available to the general public$$fUnrestricted
000151394 5203_ $$aMembrane distillation (MD) is an emerging technology in the field of water desalination due to its high-energy efficiency and the fact that is not affected by feed salt concentration. As an alternative to feed water pre-treatment, membrane surface modification aims at changing different properties to make it less prone to fouling. This work addresses the mitigation of the most concerning membrane degradation effects in MD, such as pore wetting and fouling, by modifying the membrane surface. This work takes advantage of the adsorption properties of metal-organic frameworks (MOF)@graphene oxide (GO) nanohybrids to create sacrificial sites (located zones where adsorption of foulants is facilitated) on the membrane surface. MOF@GO nanohybrids are embedded between two polydopamine (PDA) layers that are deposited on top of commercial polyethylene (PE) membranes. Two types of MOF@GO nanohybrids were evaluated, one containing UiO-66-NH2 and the other one ZIF-8. Air gap membrane distillation (AGMD) experiments using highly concentrated foulant solutions to accelerate the effects of membrane degradation, showed that surface modification effectively extended membrane life. The selective foulant adsorption delayed pore wetting and allowed to retain most of the membrane flux. Pore wetting occurred after 109 h for the membrane containing ZIF-8@GO (500 mg·m−2), compared to 4–5 h for the unmodified commercial membrane. Due to their high adsorption properties, the presence of MOFs is essential to ensure the formation of sacrificial sites and to maintain the initial flux, thus higher fluxes were observed for MOF@GO membranes (13 kg·m−2·h−1), compared to those containing only GO (5 kg·m−2·h−1).
000151394 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/DGA/T68-23R$$9info:eu-repo/grantAgreement/ES/MICINN/AEI/TED2021-130557A-I00
000151394 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000151394 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000151394 700__ $$aCano-Herranz, Lucía
000151394 700__ $$0(orcid)0000-0001-5002-7197$$aLuque-Alled, Jose Miguel
000151394 700__ $$0(orcid)0000-0002-4954-1188$$aTéllez, Carlos$$uUniversidad de Zaragoza
000151394 700__ $$0(orcid)0000-0002-6905-714X$$aGorgojo, Patricia$$uUniversidad de Zaragoza
000151394 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000151394 773__ $$g604 (2025), 118722 [15 pp.]$$pDesalination (Amst.)$$tDesalination$$x0011-9164
000151394 8564_ $$s7884468$$uhttps://zaguan.unizar.es/record/151394/files/texto_completo.pdf$$yVersión publicada
000151394 8564_ $$s2012763$$uhttps://zaguan.unizar.es/record/151394/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000151394 909CO $$ooai:zaguan.unizar.es:151394$$particulos$$pdriver
000151394 951__ $$a2025-03-07-09:33:45
000151394 980__ $$aARTICLE