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

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dc.contributor.authorArar T.
dc.contributor.authorYüksel T.
dc.contributor.authorKabay N.
dc.contributor.authorYüksel M.
dc.date.accessioned2019-10-27T08:24:00Z
dc.date.available2019-10-27T08:24:00Z
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 12bar of pressure. The concentration of boron remaining in the permeate was 5.9mg/L. It was obtained that the concentration of boron decreased from 5.9mg/L to 0.4mg/L and silica from 0.3mg Si/L to 0.1mg Si/L with a layered bed configuration of EDI system when a 40V 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 40V, boron and silica concentrations in the product water were 1.60mg B/L and 0.2mg 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. © 2012 Elsevier B.V.en_US
dc.description.sponsorshipFirat University Scientific Research Projects Management Unit: EU-2009 FEN 081en_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.issn0011-9164en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage25en_US
dc.identifier.urihttps://doi.org/10.1016/j.desal.2012.10.001
dc.identifier.urihttps://hdl.handle.net/11454/26515
dc.identifier.volume310en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_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 (RO) permeate of geothermal wateren_US
dc.typeArticleen_US

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