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Optimization of chemical cleaning of a reverse osmosis membrane from a desalination plant by means of two step static tests

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Optimization of chemical cleaning of a reverse osmosis membrane from a desalination plant by means of two step static tests

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dc.contributor.author García Fayos, Beatriz es_ES
dc.contributor.author Arnal Arnal, José Miguel es_ES
dc.contributor.author Gimenez Anton, Adria Carles es_ES
dc.contributor.author Alvarez Blanco, Silvia es_ES
dc.contributor.author Sancho Fernández, María Pino es_ES
dc.date.accessioned 2016-10-04T08:44:35Z
dc.date.available 2016-10-04T08:44:35Z
dc.date.issued 2015-09-19
dc.identifier.issn 1944-3986
dc.identifier.uri http://hdl.handle.net/10251/71086
dc.description.abstract Research in cleaning procedures of reverse osmosis membranes used in seawater desalination to minimize costs and achieve high efficiency is necessary. Multi-step cleaning can represent a useful tool, since the cleaning efficiency can be improved by means of utilization of different chemicals with complementary cleaning mechanisms. The objective of this work was the optimization of a two-step cleaning procedure to recover the membrane properties and reduce power costs. Spent Hydranautics SWC3 membranes (USA) were supplied by a desalination plant. Cleaning tests were performed in three stages: one-step static cleaning, two-step static cleaning and characterization of the membrane surface after the cleaning process. Four cleaning agents at two different concentrations were used. All possible combinations of them were considered, including sequence effect. After the cleaning process, membrane surface was characterized by field emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and atomic force microscopy. One-step static cleaning test indicated that sodium dodecyl sulphate 1% w/v was the most efficient cleaning solution, followed by NaOH 2% w/v. Two-step cleaning tests showed that the procedure that maximized permeate flux recovery was surfactant-alkaline cleaning, whereas the one that maximized the recovery of the salt rejection index was alkaline-acid sequence. Characterization of the membrane surface after the cleaning steps confirmed that fouling deposits were significantly removed. es_ES
dc.description.sponsorship The authors wish to thank Abengoa Water, S.L. for the financial support given to this research through the project "Cleaning and re-use of reverse osmosis membranes in desalination plants", which belongs to the CENIT-Tecoagua research project, funded by the Spanish Ministry of Science and Innovation. The authors would like to gratefully acknowledge Vicente Fornes and Rosa Torrero from the CSIC-I.T.Q research centre from the Universitat Politecnica de Valencia for their support given in the ATR-FTIR analysis. en_EN
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation Abengoa Water, S.L. es_ES
dc.relation Spanish Ministry of Science and Innovation es_ES
dc.relation.ispartof Desalination and Water Treatment es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Chemical agent es_ES
dc.subject Multi-step cleaning es_ES
dc.subject RO es_ES
dc.subject Static test es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Optimization of chemical cleaning of a reverse osmosis membrane from a desalination plant by means of two step static tests es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1080/19443994.2014.959738
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental es_ES
dc.description.bibliographicCitation García Fayos, B.; Arnal Arnal, JM.; Gimenez Anton, AC.; Alvarez Blanco, S.; Sancho Fernández, MP. (2015). Optimization of chemical cleaning of a reverse osmosis membrane from a desalination plant by means of two step static tests. Desalination and Water Treatment. 55(12):3367-3379. doi:10.1080/19443994.2014.959738 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1080/19443994.2014.959738 es_ES
dc.description.upvformatpinicio 3367 es_ES
dc.description.upvformatpfin 3379 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 55 es_ES
dc.description.issue 12 es_ES
dc.relation.senia 286047 es_ES
dc.identifier.eissn 1944-3986


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