Application of electrodeionization (EDI) for removal of boron and silica from reverse osmosis (RU) permeate of geothermal water

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dc.contributor.authorArar, Ozgur
dc.contributor.authorYuksel, Umran
dc.contributor.authorKabay, Nalan
dc.contributor.authorYuksel, Mithat
dc.date.accessioned2019-10-27T21:41:50Z
dc.date.available2019-10-27T21:41:50Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstractIn this study, a hybrid process coupling reverse osmosis (RO) with electrodeionization (EDI) was investigated to remove boron and silica from geothermal water. The effect of applied voltage, feed flow rate, Na2SO4 concentration in the electrode compartments, membrane type and ion exchange resin bed configuration on the removal of boron and silica has been investigated. Geothermal water was obtained from the discharge lines in the geothermal plant of Izmir Geothermal Co. The RO system contained two parallel mounted brackish reverse osmosis membranes (BW-30-2540, Dow FilmTech). The RO permeate was collected using a single membrane configuration of operation by applying a 12 bar of pressure. The concentration of boron remaining in the permeate was 5.9 mg/L It was obtained that the concentration of boron decreased from 5.9 mg/L to 0.4 mg/L and silica from 03 mg Si/L to 0.1 mg Si/L with a layered bed configuration of EDI system when a 40 V of voltage was applied to the EDI system. The feed flow rate did not have any significant effect on the removal of boron and silica from the RO permeate of geothermal water by EDI. On the other hand, the transport of boron to the anode compartment of EDI system enhanced with increasing the feed flow rate. In a mixed bed EDI system, when the applied potential was 40 V. boron and silica concentrations in the product water were 1.60 mg B/L and 02 mg Si/L, respectively. The type of the membrane was found to be another important parameter on the removal of boron and silica from the RO permeate. (C) 2012 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipEge University Scientific Research ProjectEge University [EU-2009 FEN 081]en_US
dc.description.sponsorshipThis study has been partially supported by Ege University Scientific Research Project (EU-2009 FEN 081). We would like to acknowledge Izmir Geothermal Co. for the support to perform RO tests in the geothermal field. The authors thank E. Yavuz for his support during RO tests in the field. We are especially grateful to Asahi Glass Co. (Japan), and Astom Co. (Japan) for sending us ion exchange membranes and Purolite Int Co. for ion exchange resins.en_US
dc.identifier.doi10.1016/j.desal.2012.10.001
dc.identifier.endpage33en_US
dc.identifier.issn0011-9164
dc.identifier.issn1873-4464
dc.identifier.issn0011-9164en_US
dc.identifier.issn1873-4464en_US
dc.identifier.startpage25en_US
dc.identifier.urihttps://doi.org/10.1016/j.desal.2012.10.001
dc.identifier.urihttps://hdl.handle.net/11454/46759
dc.identifier.volume310en_US
dc.identifier.wosWOS:000316040000005en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofDesalinationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBoronen_US
dc.subjectElectrodeionizationen_US
dc.subjectGeothermal wateren_US
dc.subjectIon exchange membraneen_US
dc.subjectReverse osmosisen_US
dc.subjectSilicaen_US
dc.titleApplication of electrodeionization (EDI) for removal of boron and silica from reverse osmosis (RU) permeate of geothermal wateren_US
dc.typeArticleen_US

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