Ion Exchange Polymer Coated Electrodes for Selective Electrosorption Based Water Softening Applications

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dc.contributor.advisorVerduzco, Rafael
dc.creatorJain, Amit
dc.date.accessioned2020-04-27T19:19:48Z
dc.date.available2020-11-01T05:01:11Z
dc.date.created2020-05
dc.date.issued2020-04-23
dc.date.submittedMay 2020
dc.date.updated2020-04-27T19:19:48Z
dc.description.abstractElectrosorption is a developing water treatment method and operates by applying an electrical potential between two porous electrodes. In membrane based electrosorption system, ion-exchange membranes are placed in front of each electrode to prevent the passage of co-ions, resulting in enhanced salt removal and charge efficiencies. However, currently not many electrosorption systems exist which can selectively remove specific ions. Membrane based selective electrosorption systems that could selectively remove target ions can be useful for various water treatment applications. For example, produced water treatment requires selective removal of scale forming ions (Ba2+, Ca2+, Sr2+, SO42-) to prevent scale deposition in various piping and equipment surfaces. Furthermore, if using an electrosorption approach, ion selective approach would be more energy efficient. In this work, in the first stage, ion exchange polymer coated electrodes were developed, and a high salt removal and energy efficiency performance was obtained. In the second stage, a novel sulfonated polymer (PEDOT:PSS) coated electrode for selective electrosorption was developed. Ion selective electrosorption tests were conducted using a mixed salt solution consisting of CaCl2 and NaCl. Furthermore, applied voltage, feed flow rate and composition were varied to analyze their effect on the selectivity performance. The test results indicate that with this novel electrosorption system a highest Ca2+/Na+ selectivity of 8.21 ± 2.88 at 0.6 V could be achieved.
dc.embargo.terms2020-11-01
dc.format.mimetypeapplication/pdf
dc.identifier.citationJain, Amit. "Ion Exchange Polymer Coated Electrodes for Selective Electrosorption Based Water Softening Applications." (2020) Diss., Rice University. <a href="https://hdl.handle.net/1911/108396">https://hdl.handle.net/1911/108396</a>.
dc.identifier.urihttps://hdl.handle.net/1911/108396
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectWater Treatment
dc.subjectMembranes
dc.subjectElectrosorption
dc.subjectCapacitive Deionization
dc.subjectSelectivity
dc.subjectScale forming ions
dc.subjectProduced Water Treatment
dc.subjectDesalination
dc.subjectNano-Technology Enabled Water Treatment
dc.subjectPervaporation Desalination
dc.subjectSulfonated Pentablock copolymer
dc.titleIon Exchange Polymer Coated Electrodes for Selective Electrosorption Based Water Softening Applications
dc.typeThesis
dc.type.materialText
thesis.degree.departmentChemical and Biomolecular Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelDoctoral
thesis.degree.majorPolymers for Water Treatment
thesis.degree.nameDoctor of Philosophy
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