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Evaluation of NF membranes as treatment technology of acid mine drainage: metals and sulfate removal
dc.contributor.author | López Rodríguez, Julio |
dc.contributor.author | Reig i Amat, Mònica |
dc.contributor.author | Gibert Agulló, Oriol |
dc.contributor.author | Valderrama Ángel, César Alberto |
dc.contributor.author | Cortina Pallás, José Luís |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2018-06-27T11:23:22Z |
dc.date.available | 2020-08-15T00:27:58Z |
dc.date.issued | 2018-08-15 |
dc.identifier.citation | Lopez, J., Reig, M., Gibert, O., Valderrama, C., Cortina, J. Evaluation of NF membranes as treatment technology of acid mine drainage: metals and sulfate removal. "Desalination", 15 Agost 2018, vol. 440, p. 122-134. |
dc.identifier.issn | 0011-9164 |
dc.identifier.uri | http://hdl.handle.net/2117/118597 |
dc.description.abstract | Acid mine drainage (AMD) are acidic streams rich in dissolved ferrous and non-ferrous metal sulfates and minor amounts of non-metals. Nanofiltration (NF) has been postulated as a potential technology in the metallurgical and mining industry to recover strong acids as H2SO4 and concentrate metallic ions from acidic mine waters. The performance of semi-aromatic polyamide (NF270) and sulfonated polyethersulfone (HydraCoRe 70pHT) NF membranes were evaluated at different trans-membrane pressures. Different synthetic solutions were filtered under spiral wound configuration at two pHs (2.0 and 2.8): i) a solution of Na2SO4 and ii) a solution mimicking AMD from dams, containing Na2SO4 and Fe2+, Zn2+ and Cu2+. NF270 showed metal rejections higher than 90%, while for HydraCoRe 70pHT they were in between 60 and 70%. Metal rejection values decreased when solution acidity was increased. Chemical composition of the membrane active layer and the aqueous metal-sulfate speciation were found to have a large impact on membrane separation process. Solution-Electromigration-Diffusion-Film model was used to estimate the membrane permeances to ions from the measured ion rejections. Furthermore, a full scale unit vessel containing six spiral wound membrane modules was simulated. NF270 showed a higher capacity for concentrating metal and sulfate ions (100%) than Hydracore 70pHT (50%). |
dc.format.extent | 13 p. |
dc.language.iso | eng |
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::Impacte ambiental |
dc.subject.lcsh | Acid mine drainage |
dc.subject.lcsh | Mineral industries |
dc.subject.other | Acid mine drainage |
dc.subject.other | Spiral wound |
dc.subject.other | NF270 |
dc.subject.other | HydraCoRe |
dc.subject.other | 70pHT |
dc.subject.other | metal recovery |
dc.subject.other | SEDF model. |
dc.title | Evaluation of NF membranes as treatment technology of acid mine drainage: metals and sulfate removal |
dc.type | Article |
dc.subject.lemac | Aigües àcides -- Depuració |
dc.subject.lemac | Indústria minera -- Residus |
dc.subject.lemac | Aigües residuals -- Depuració |
dc.contributor.group | Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management |
dc.identifier.doi | 10.1016/j.desal.2018.03.030 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0011916417316703 |
dc.rights.access | Open Access |
local.identifier.drac | 22531059 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Lopez, J.; Reig, M.; Gibert, O.; Valderrama, C.; Cortina, J. |
local.citation.publicationName | Desalination |
local.citation.volume | 440 |
local.citation.startingPage | 122 |
local.citation.endingPage | 134 |
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