{"605233":{"#nid":"605233","#data":{"type":"event","title":"PhD Defense by Bopeng Zhang","body":[{"value":"\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ESchool of Civil and Environmental Engineering\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Defense Announcement\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIon exchange membrane systems: modeling and optimization for salinity gradient energy generation\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBy\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EBopeng Zhang\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAdvisor:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Yongsheng Chen (CEE)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Yongsheng Chen (Advisor, CEE); Dr. John Crittenden (CEE); Dr. Sotira Yiacoumi (CEE); Dr. Shuman Xia (Mechanical Engineering); Dr. Xing Xie (CEE)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EDate \u0026amp; Time:\u003C\/strong\u003E Wednesday, May 2\u003Csup\u003End\u003C\/sup\u003E, 2018 , 10:00AM\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ELocation:\u003C\/strong\u003E Sustainable Education Building, 122\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EEnergy can be sustainably generated by harnessing natural salinity gradients in coastal environments. Power derived\u003C\/p\u003E\r\n\r\n\u003Cp\u003Efrom the mixing of freshwater and seawater can be recovered as electrical energy by regulated ion transport in reverse\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eelectrodialysis (RED) systems. Cation exchange membranes and anion exchange membranes, known together as ion\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eexchange membranes (IEMs), are crucial components to the energy generation efficiency in RED stacks. Considering\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ethe fundamental nature of electrochemical systems, it is conceivable that membrane functional properties, including\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eionic conductivity and permselectivity, have significant effects on RED energy performance. A better understanding\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eof these determining factors is therefore critical to advance commercialization feasibility.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThis study focused on advancing the understanding of IEMs through modeling, simulation and experimental\u003C\/p\u003E\r\n\r\n\u003Cp\u003Evalidation in addition to novel approaches for RED energy performance improvement. Specifically, conductivity\u003C\/p\u003E\r\n\r\n\u003Cp\u003Egains were realized through implementation of ion exchange resin in low-concentration compartments. Mathematical\u003C\/p\u003E\r\n\r\n\u003Cp\u003Emodeling and experimental validation were leveraged to infer crucial factors in membrane conductivity and other\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ephysical property determinations. In addition, this framework was extended to illuminate the role of nanoparticle\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eintroduction during the synthesis process.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EModeling and simulation results were successful in revealing the underlying dependencies of IEM characterization\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eand improving the system energy performance. A majority of these theories and simulations are generalized -\u003C\/p\u003E\r\n\r\n\u003Cp\u003Epotentially yielding broad impacts to similar membrane-based systems and processes (e.g., electrodialysis).\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Ion exchange membrane systems: modeling and optimization for salinity gradient energy generation"}],"uid":"27707","created_gmt":"2018-04-18 14:00:40","changed_gmt":"2018-04-18 14:00:40","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2018-05-02T11:00:00-04:00","event_time_end":"2018-05-02T13:00:00-04:00","event_time_end_last":"2018-05-02T13:00:00-04:00","gmt_time_start":"2018-05-02 15:00:00","gmt_time_end":"2018-05-02 17:00:00","gmt_time_end_last":"2018-05-02 17:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}