Biofouling and scaling control of reverse osmosis membrane using one-step cleaning - potential of acidified nitrite solution as an agent

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dc.contributor.authorFilloux, Emmanuelle
dc.contributor.authorWang, Jingshi
dc.contributor.authorPidou, Marc
dc.contributor.authorGernjak, Wolfgang
dc.contributor.authorYuan, Zhiguo
dc.date.accessioned2017-08-16T14:00:26Z
dc.date.available2017-08-16T14:00:26Z
dc.date.issued2015-08-17
dc.description.abstractBiofouling is generally regarded as a major issue in reverse osmosis (RO) membrane filtration. Two-step chemical cleanings with alkaline and acidic agents are typically applied to restore the treatment capacity. In this study, the feasibility of one-step cleaning using free nitrous acid (FNA) was investigated as a novel low cost cleaning agent. The FNA cleaning solution was prepared by acidification of a sodium nitrite solution with hydrochloric acid. Seven fouled RO membranes collected from full-scale wastewater recycling and desalination plants were used to perform lab-scale cleaning trials. Membrane fouling characterisation revealed six of out of seven membranes were mainly bio-fouled, while one membrane was severely fouled by calcium carbonate. This study showed the feasibility of using FNA at pH 3.0 for biomass removal as well as for calcium carbonate scaling removal. The results from the lab-scale cleaning tests suggested that FNA can be used as a single cleaning agent for both biofouling and scaling removal. Cost analysis showed that FNA is a cost-effective solution for biofouling and scaling removal in RO filtration applications.en_UK
dc.identifier.citationFilloux E, Wang J, Pidou M, Gernjak W, Yuan, Z, Biofouling and scaling control of reverse osmosis membrane using one-step cleaning - potential of acidified nitrite solution as an agent, Journal of Membrane Science, Vol. 495, December 2015, pp. 276-283en_UK
dc.identifier.cris14344386
dc.identifier.issn0376-7388
dc.identifier.urihttp://dx.doi.org/10.1016/j.memsci.2015.08.034
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12327
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-Non-Commercial-No Derivatives 3.0 Unported (CC BY-NC-ND 3.0). You are free to: Share — copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No Derivatives — If you remix, transform, or build upon the material, you may not distribute the modified material. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subjectBiofoulingen_UK
dc.subjectFree nitrous aciden_UK
dc.subjectMembrane cleaningen_UK
dc.subjectReverse osmosisen_UK
dc.titleBiofouling and scaling control of reverse osmosis membrane using one-step cleaning - potential of acidified nitrite solution as an agenten_UK
dc.typeArticleen_UK

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