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Alternatives to the use of synthetic organic coagulant aids in drinking water treatment: improvements in the application of the crude extract of Moringa oleifera seed

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Alternatives to the use of synthetic organic coagulant aids in drinking water treatment: improvements in the application of the crude extract of Moringa oleifera seed

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dc.contributor.author García Fayos, Beatriz es_ES
dc.contributor.author Arnal Arnal, José Miguel es_ES
dc.contributor.author Monforte Monleon, Lorenzo es_ES
dc.contributor.author Sancho Fernández, María Pino
dc.date.accessioned 2016-09-28T07:45:12Z
dc.date.available 2016-09-28T07:45:12Z
dc.date.issued 2015-09
dc.identifier.issn 1944-3986
dc.identifier.uri http://hdl.handle.net/10251/70547
dc.description.abstract [EN] Drinking water treatment is a process based on multiple stages that has a main objective to provide water safe enough to be consumed by humans. Coagulation–flocculation is used to remove colloidal and suspended solids. This process improves the performance of subsequent stages (as sedimentation or filtration) as well as the water quality with a desired end-use. For many years, inorganic and organic synthetic polyelectrolytes have been used in coagulation–flocculation processes. However, its use has been deeply studied recently to determine the potential impact of residual concentration of these substances on human health and the environment. Strict regulations limit the concentration of free residual monomer after the addition of polyacrylamide (PAM) in drinking water treatment and study the effect of interaction of the residues with disinfection products. Therefore, in the last years there has been a resurgence of interest to use natural materials with the same performance that synthetic, but with lower hazard for the environment and humans. This work studies the use of the flocculant extracted from Moringa oleifera seed, in combination with polyaluminum chloride (PAC). The performance is compared with the combination PAC–PAM in terms of coagulant activity and physical–chemical quality of the water treated. Jar test was carried out using two types of natural water (with presence of bentonites) and different combinations of coagulant and flocculants. Results show that coagulant activity of PAC–Moringa combination is comparable with the results obtained with PAC–PAM, reducing initial turbidity up to 90% in all the tests. With regard to physical–chemical quality of the treated water, PAC–Moringa produces values under the drinking water quality standards for all the parameters analyzed. It is remarkable that the decrease of 50% in the trihalomethanes formation potential rate shown for PAC–Moringa combination, observed when treating natural water with presence of bentonites. Therefore, the results obtain in this work encourage the use of Moringa oleifera extract as a natural, low cost, effective, and low-toxicity alternative to the use of synthetic organic polyelectrolytes as polyacrylamide for drinking water treatment. es_ES
dc.description.sponsorship This research has been done in the framework of the project “Study of synthetic and natural coagulants susceptible of being used in the water treatment plant of “Ribarroja del Turia” (Valencia) as substitutes for polyacrylamide”. The authors wish to thank the staff of the laboratory of the Department of Water Quality of the company “Aguas de Valencia” located in La Presa (Manises) for its collaboration in the water tests of this work.
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation.ispartof Desalination and Water Treatment es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Coagulant aids es_ES
dc.subject Coagulation es_ES
dc.subject Drinking water treatment es_ES
dc.subject Moringa es_ES
dc.subject Organic polyelectrolytes es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Alternatives to the use of synthetic organic coagulant aids in drinking water treatment: improvements in the application of the crude extract of Moringa oleifera seed es_ES
dc.type Artículo es_ES
dc.type Comunicación en congreso
dc.identifier.doi 10.1080/19443994.2014.939487
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.description.bibliographicCitation García Fayos, B.; Arnal Arnal, JM.; Monforte Monleon, L.; Sancho Fernández, MP. (2015). Alternatives to the use of synthetic organic coagulant aids in drinking water treatment: improvements in the application of the crude extract of Moringa oleifera seed. Desalination and Water Treatment. 55(13):3635-3645. doi:10.1080/19443994.2014.939487 es_ES
dc.description.accrualMethod S es_ES
dc.relation.conferencename Conference on Desalination for the Environment - Clean Water and Energy
dc.relation.conferencedate May 11-15, 2014
dc.relation.conferenceplace Limasol, Cyprus
dc.relation.publisherversion http://dx.doi.org/10.1080/19443994.2014.939487 es_ES
dc.description.upvformatpinicio 3635 es_ES
dc.description.upvformatpfin 3645 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 55 es_ES
dc.description.issue 13 es_ES
dc.relation.senia 286199 es_ES


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