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From nanofiltration membrane permeances to design projections for the remediation and valorisation of acid mine waters
dc.contributor.author | López Rodríguez, Julio |
dc.contributor.author | Reig i Amat, Mònica |
dc.contributor.author | Vecino Bello, Xanel |
dc.contributor.author | Gibert Agulló, Oriol |
dc.contributor.author | Cortina Pallás, José Luís |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2021-01-22T09:24:00Z |
dc.date.available | 2022-10-10T00:25:40Z |
dc.date.issued | 2020-10-10 |
dc.identifier.citation | Lopez, J. [et al.]. From nanofiltration membrane permeances to design projections for the remediation and valorisation of acid mine waters. "Science of the total environment", 10 Octubre 2020, vol. 738, p. 1397807/1-139780/11. |
dc.identifier.issn | 0048-9697 |
dc.identifier.uri | http://hdl.handle.net/2117/335785 |
dc.description.abstract | Acidic Mine Waters (AMWs) are characterised by high acidity (pH¿<¿3) as H2SO4 and elevated contents of metals (Al, Fe, Cu, Zn), including rare earth elements (REEs). Due to the exhaustion of minable REE containing-minerals, AMWs are increasingly regarded as an alternative source of REEs. Among the different alternatives for the pre-concentration of AMWs required to make the REE extraction possible, nanofiltration (NF) membranes emerge as a promising technology because they not only successfully reject multivalent ions (metals), allowing its concentration in the retentate stream, but also permit the transport of monovalent ones, such as H+ and HSO4-, allowing the recovery of sulphuric acid in the permeate. Despite this potential of NF, there is still a lack of modelling tools for predicting the performance of NF membranes because of its dependence on solution composition, membrane properties and interaction between both. In this study, a prediction tool based on the Solution-Electro-Diffusion model (including the effect of solution composition) was developed and experimentally validated for the application of two polyamide-based NF membranes (NF270 and Desal DL) for the recovery of REEs and H2SO4 from three different synthetic solutions mimicking AMWs (pH¿1.0, 60¿mg/L REEs and, 25–600¿mg/L Al, Cu, Ca and Zn) differing in their Fe concentration (0–2125¿mg/L). Metals were effectively rejected (>98%), whereas H2SO4 was transported across the membrane (H+ rejections <30%). The mathematical model was able to predict the performance of both membranes as well as the potential scaling events associated with Fe and Al hydroxides and hydroxy-sulphates. |
dc.language.iso | eng |
dc.publisher | Elsevier |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Nanofiltration |
dc.subject.lcsh | Membranes (Technology) |
dc.subject.other | Resource recovery |
dc.subject.other | Acidic mine waters |
dc.subject.other | NF270 |
dc.subject.other | Desal DL |
dc.subject.other | Nanofiltration |
dc.title | From nanofiltration membrane permeances to design projections for the remediation and valorisation of acid mine waters |
dc.type | Article |
dc.subject.lemac | Aigües àcides -- Depuració |
dc.subject.lemac | Nanofiltració |
dc.subject.lemac | Membranes (Tecnologia) |
dc.contributor.group | Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management |
dc.identifier.doi | 10.1016/j.scitotenv.2020.139780 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www-sciencedirect-com.recursos.biblioteca.upc.edu/science/article/pii/S0048969720333003 |
dc.rights.access | Open Access |
local.identifier.drac | 28852748 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Lopez, J.; Reig, M.; Vecino, X.; Gibert, O.; Cortina, J. |
local.citation.publicationName | Science of the total environment |
local.citation.volume | 738 |
local.citation.startingPage | 1397807/1 |
local.citation.endingPage | 139780/11 |
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