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dc.contributor.authorViader, Gerard
dc.contributor.authorCasal Valls, Oriol
dc.contributor.authorLefevre, Benoit
dc.contributor.authorde Arespacochaga, Nicolas
dc.contributor.authorEchevarria, C.
dc.contributor.authorLópez Rodríguez, Julio
dc.contributor.authorValderrama Angel, César Alberto
dc.contributor.authorCortina Pallás, José Luís
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationViader, G. [et al.]. Integration of membrane distillation as volume reduction technology for in-land desalination brines management: Pre-treatments and scaling limitations. "Journal of environmental management", Juliol 2021, vol. 289, p. 112549:1-112549:16.
dc.description.abstractManagement of in-land reverse osmosis (RO) desalination brines generated from surface brackish waters is a current challenge. Among the different near-Zero and Zero Liquid Discharge (ZLD) alternatives, Membrane Distillation (MD), in which the transport of water is thermally driven, appears as an attractive technology if a residual heat source is available. The aim of this study was to identify the limits of Direct Contact MD (DCMD) pre-treatments such as acidification and aeration, or the combination of both to quantify the scaling reduction potential when treating a RO brine from surface brackish water. Experimental data were used to evaluate the effectiveness of DCMD to achieve the highest concentration factors, depending on the chosen pre-treatment. Additionally, an economic analysis of the operational cost, taking as case study a site where the current management of the brine is the discharge to the sea, was also carried out. Results showed that pre-treatments enhanced MD performance by increasing the concentration factor achieved and highest volume reductions (about 3 times) were reached with the combination of acidification and aeration pre-treatments. Both processes reduced the precipitation potential of CaCO3(s) by reducing the total inorganic carbon (>90%); however, CaSO4·2H2O(s) precipitated. Results also indicated that even if a waste heat source is available, brine disposal into the sea is the cheapest option, while ZLD alternatives were not attractive in the current regulatory framework since their cost was higher than the discharge to the sea. Other options related to the Minimal Liquid Discharge may be more economically attractive.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Impacte ambiental
dc.subject.otherPVDF membranes
dc.subject.otherZero-liquid discharge
dc.titleIntegration of membrane distillation as volume reduction technology for in-land desalination brines management: Pre-treatments and scaling limitations
dc.subject.lemacAigua -- Tecnologia
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorViader, G.; Casal, O.; Lefevre, B.; de Arespacochaga, N.; Echevarria, C.; Lopez, J.; Valderrama, C.; Cortina, J.
local.citation.publicationNameJournal of environmental management

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