{"641805":{"#nid":"641805","#data":{"type":"event","title":"Phd Defense by Su Liu","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Defense Announcement\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EOSMOTICALLY\u0026nbsp;DRIVEN\u0026nbsp;MEMBRANE\u0026nbsp;PROCESSES\u0026nbsp;FOR\u0026nbsp;WATER\u0026nbsp;TREATMENT:\u0026nbsp;MEMBRANE\u0026nbsp;SYNTHESIS\u0026nbsp;AND\u0026nbsp;TRANSPORT\u0026nbsp;MECHANISM\u0026nbsp;EXPLORATION\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003Eby\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESu Liu\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAdvisor(s):\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. John Crittenden\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\u003E\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;Dr.\u0026nbsp;Yongsheng\u0026nbsp;Chen\u0026nbsp;(CEE);\u0026nbsp;Dr.\u0026nbsp;Xing\u0026nbsp;Xie\u0026nbsp;(CEE);\u0026nbsp;Dr.\u0026nbsp;Sotira\u0026nbsp;Yiacoumi\u0026nbsp;(CEE);\u0026nbsp;Dr.\u0026nbsp;Marta\u0026nbsp;Hatzell\u0026nbsp;(ME)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDate \u0026amp; Time: Dec. 15 9:00 AM\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ELocation: \u003C\/strong\u003E\u003Ca href=\u0022https:\/\/bluejeans.com\/949477642\u0022\u003Ehttps:\/\/bluejeans.com\/949477642\u003C\/a\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;Complete announcement, with abstract, is attached\u003C\/p\u003E\r\n\r\n\u003Cp\u003EOsmotically\u0026nbsp;driven\u0026nbsp;membrane\u0026nbsp;processes\u0026nbsp;are\u0026nbsp;promising\u0026nbsp;technologies\u0026nbsp;for\u0026nbsp;water\u0026nbsp;treatment\u0026nbsp;which\u0026nbsp;use\u0026nbsp;osmotic\u0026nbsp;pressure\u0026nbsp;difference\u0026nbsp;as\u0026nbsp;the\u0026nbsp;driving\u0026nbsp;force.\u0026nbsp;Forward\u0026nbsp;osmosis\u0026nbsp;(FO)\u0026nbsp;is\u0026nbsp;a\u0026nbsp;typical\u0026nbsp;osmotic\u0026nbsp;pressure-driven\u0026nbsp;membrane\u0026nbsp;process.\u0026nbsp;The\u0026nbsp;membrane\u0026nbsp;is\u0026nbsp;the\u0026nbsp;key\u0026nbsp;component\u0026nbsp;of\u0026nbsp;an\u0026nbsp;FO\u0026nbsp;membrane\u0026nbsp;system;\u0026nbsp;however,\u0026nbsp;the\u0026nbsp;lack\u0026nbsp;of\u0026nbsp;high-performance\u0026nbsp;membranes\u0026nbsp;hinders\u0026nbsp;the\u0026nbsp;large-scale\u0026nbsp;applications\u0026nbsp;of\u0026nbsp;FO.\u0026nbsp;The\u0026nbsp;overall\u0026nbsp;objective\u0026nbsp;of\u0026nbsp;this\u0026nbsp;research\u0026nbsp;is\u0026nbsp;to\u0026nbsp;design\u0026nbsp;efficient\u0026nbsp;membranes\u0026nbsp;specifically\u0026nbsp;for\u0026nbsp;osmotically\u0026nbsp;driven\u0026nbsp;membrane\u0026nbsp;processes\u0026nbsp;for\u0026nbsp;water\u0026nbsp;treatment\u0026nbsp;and\u0026nbsp;to\u0026nbsp;understanding\u0026nbsp;the\u0026nbsp;underlying\u0026nbsp;transport\u0026nbsp;mechanisms.\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\nSpecifically,\u0026nbsp;the\u0026nbsp;FO\u0026nbsp;membrane\u0026nbsp;was\u0026nbsp;modified\u0026nbsp;with\u0026nbsp;an\u0026nbsp;innovative\u0026nbsp;organic\u0026nbsp;coating\u0026nbsp;layer.\u0026nbsp;The\u0026nbsp;modified\u0026nbsp;membrane\u0026nbsp;has\u0026nbsp;a\u0026nbsp;more\u0026nbsp;hydrophilic,\u0026nbsp;less\u0026nbsp;rough\u0026nbsp;surface\u0026nbsp;and\u0026nbsp;reduced\u0026nbsp;pore\u0026nbsp;size.\u0026nbsp;The\u0026nbsp;membrane\u0026nbsp;overall\u0026nbsp;performances,\u0026nbsp;including\u0026nbsp;reverse\u0026nbsp;salt\u0026nbsp;selectivity,\u0026nbsp;anti-fouling\u0026nbsp;property,\u0026nbsp;and\u0026nbsp;rejection\u0026nbsp;of\u0026nbsp;the\u0026nbsp;micropollutants,\u0026nbsp;were\u0026nbsp;enhanced\u0026nbsp;with\u0026nbsp;a\u0026nbsp;mild\u0026nbsp;water\u0026nbsp;permeability\u0026nbsp;loss.\u0026nbsp;Graphene\u0026nbsp;oxide\u0026nbsp;membranes\u0026nbsp;(GOMs)\u0026nbsp;are\u0026nbsp;promising\u0026nbsp;separation\u0026nbsp;technologies\u0026nbsp;because\u0026nbsp;of\u0026nbsp;the\u0026nbsp;high\u0026nbsp;water\u0026nbsp;permeability.\u0026nbsp;In\u0026nbsp;addition,\u0026nbsp;the\u0026nbsp;reverse\u0026nbsp;salt\u0026nbsp;flux\u0026nbsp;(salt\u0026nbsp;flux\u0026nbsp;from\u0026nbsp;the\u0026nbsp;draw\u0026nbsp;solution\u0026nbsp;to\u0026nbsp;the\u0026nbsp;feed\u0026nbsp;solution)\u0026nbsp;is\u0026nbsp;low\u0026nbsp;in\u0026nbsp;FO.\u0026nbsp;However,\u0026nbsp;the\u0026nbsp;rejection\u0026nbsp;is\u0026nbsp;low\u0026nbsp;(forward\u0026nbsp;salt\u0026nbsp;flux\u0026nbsp;is\u0026nbsp;high)\u0026nbsp;in\u0026nbsp;the\u0026nbsp;hydraulic\u0026nbsp;pressure\u0026nbsp;driven\u0026nbsp;mode.\u0026nbsp;This\u0026nbsp;counterintuitive\u0026nbsp;phenomenon\u0026nbsp;was\u0026nbsp;studied\u0026nbsp;to\u0026nbsp;understand\u0026nbsp;the\u0026nbsp;transport\u0026nbsp;mechanisms\u0026nbsp;in\u0026nbsp;GOMs.\u0026nbsp;Based\u0026nbsp;on\u0026nbsp;the\u0026nbsp;analysis\u0026nbsp;in\u0026nbsp;this\u0026nbsp;study,\u0026nbsp;the\u0026nbsp;water\u0026nbsp;flux\u0026nbsp;from\u0026nbsp;the\u0026nbsp;feed\u0026nbsp;solution\u0026nbsp;to\u0026nbsp;the\u0026nbsp;draw\u0026nbsp;solution\u0026nbsp;can\u0026nbsp;retard\u0026nbsp;the\u0026nbsp;ion\u0026nbsp;transport\u0026nbsp;from\u0026nbsp;the\u0026nbsp;draw\u0026nbsp;solution\u0026nbsp;to\u0026nbsp;the\u0026nbsp;feed\u0026nbsp;solution.\u0026nbsp;In\u0026nbsp;addition,\u0026nbsp;the\u0026nbsp;extension\u0026nbsp;of\u0026nbsp;electrical\u0026nbsp;double\u0026nbsp;layer\u0026nbsp;(EDL)\u0026nbsp;thickness\u0026nbsp;also\u0026nbsp;has\u0026nbsp;a\u0026nbsp;screening\u0026nbsp;effect\u0026nbsp;on\u0026nbsp;retarding\u0026nbsp;the\u0026nbsp;reverse\u0026nbsp;ion\u0026nbsp;transport.\u0026nbsp;To\u0026nbsp;further\u0026nbsp;explore\u0026nbsp;the\u0026nbsp;potential\u0026nbsp;applications\u0026nbsp;for\u0026nbsp;GOMs\u0026nbsp;to\u0026nbsp;be\u0026nbsp;used\u0026nbsp;in\u0026nbsp;osmotically\u0026nbsp;driven\u0026nbsp;membrane\u0026nbsp;processes\u0026nbsp;for\u0026nbsp;water\u0026nbsp;treatment,\u0026nbsp;the\u0026nbsp;investigation\u0026nbsp;of\u0026nbsp;forward\u0026nbsp;solute\u0026nbsp;transport\u0026nbsp;was\u0026nbsp;initiated\u0026nbsp;with\u0026nbsp;the\u0026nbsp;freestanding\u0026nbsp;GOMs.\u0026nbsp;The\u0026nbsp;freestanding\u0026nbsp;GOM\u0026nbsp;has\u0026nbsp;a\u0026nbsp;better\u0026nbsp;separation\u0026nbsp;performance\u0026nbsp;for\u0026nbsp;multivalent\u0026nbsp;ions\u0026nbsp;than\u0026nbsp;the\u0026nbsp;monovalent\u0026nbsp;ions.\u0026nbsp;The\u0026nbsp;analysis\u0026nbsp;shows\u0026nbsp;the\u0026nbsp;forward\u0026nbsp;solute\u0026nbsp;transport\u0026nbsp;of\u0026nbsp;the\u0026nbsp;charged\u0026nbsp;solute\u0026nbsp;is\u0026nbsp;mainly\u0026nbsp;governed\u0026nbsp;by\u0026nbsp;the\u0026nbsp;steric\u0026nbsp;exclusion,\u0026nbsp;interfacial\u0026nbsp;Donnan\u0026nbsp;exclusion\u0026nbsp;and\u0026nbsp;EDL\u0026nbsp;screening\u0026nbsp;along\u0026nbsp;the\u0026nbsp;nanochannels\u0026nbsp;in\u0026nbsp;the\u0026nbsp;GOMs.\u0026nbsp;The\u0026nbsp;findings\u0026nbsp;in\u0026nbsp;this\u0026nbsp;study\u0026nbsp;can\u0026nbsp;provide\u0026nbsp;a\u0026nbsp;further\u0026nbsp;guidance\u0026nbsp;for\u0026nbsp;the\u0026nbsp;future\u0026nbsp;membrane\u0026nbsp;design\u0026nbsp;and\u0026nbsp;applications\u0026nbsp;exploration\u0026nbsp;for\u0026nbsp;the\u0026nbsp;osmotic\u0026nbsp;pressure\u0026nbsp;driven\u0026nbsp;membrane\u0026nbsp;processes.\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\n\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"OSMOTICALLY DRIVEN MEMBRANE PROCESSES FOR WATER TREATMENT: MEMBRANE SYNTHESIS AND TRANSPORT MECHANISM EXPLORATION"}],"uid":"27707","created_gmt":"2020-12-02 20:19:33","changed_gmt":"2020-12-02 20:19:33","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2020-12-15T09:00:00-05:00","event_time_end":"2020-12-15T11:00:00-05:00","event_time_end_last":"2020-12-15T11:00:00-05:00","gmt_time_start":"2020-12-15 14:00:00","gmt_time_end":"2020-12-15 16:00:00","gmt_time_end_last":"2020-12-15 16:00:00","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":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}