{"588990":{"#nid":"588990","#data":{"type":"event","title":"PhD Defense by Austin P. Ladshaw","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\u003EComplex Adsorption Modeling for Nuclear Energy Applications\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\u003EAustin P. Ladshaw\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAdvisors:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Sotira Yiacoumi (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. Costas Tsouris (CEE, ORNL), Dr. Spyros G. Pavlostathis (CEE),\u003Cbr \/\u003E\r\nDr. James Mulholland (CEE), Dr. David Sherrill (CHEM)\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 Monday, April 3rd, 2017 at 11:00 AM\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ELocation:\u003C\/strong\u003E Sustainable Education Building \u0026nbsp;Conference Room 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\u003Cstrong\u003EABSTRACT\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EAdsorption is a complex physical-chemical phenomenon by which molecules are\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eattached to surfaces of solid particles. The type of adsorption that occurs may often\u003C\/p\u003E\r\n\r\n\u003Cp\u003Edepend on the media the phenomenon is occurring in, making the design of models for\u003C\/p\u003E\r\n\r\n\u003Cp\u003Evarious adsorption systems an arduous task. Regardless of the media, however, the basic\u003C\/p\u003E\r\n\r\n\u003Cp\u003Emechanisms of the adsorption process are the same. Therefore, a plausible approach to\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ethe development of adsorption models in different systems would be to design a\u003C\/p\u003E\r\n\r\n\u003Cp\u003Egeneralized mathematical framework with all the necessary methods built in that will be\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eused as a platform to develop system specific adsorption models. In this work, the\u003C\/p\u003E\r\n\r\n\u003Cp\u003Einvestigation and development of such a structure will be discussed and a host of system\u003C\/p\u003E\r\n\r\n\u003Cp\u003Especific adsorption models that have been developed on top of that framework will be\u003C\/p\u003E\r\n\r\n\u003Cp\u003Edetailed. The applications of interest are all related to nuclear energy and specifically the\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eavailability of uranium in the Nuclear Fuel Cycle via recycling spent uranium fuel rods\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eand capturing new raw uranium from seawater. In recycling spent uranium, the\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ereprocessing procedure produces numerous gas pollutants that must be removed from the\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eoff-gases before emission to the atmosphere. To facilitate the design of that capture\u003C\/p\u003E\r\n\r\n\u003Cp\u003Esystem, adsorption models have been developed to predict isothermal equilibria of\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ecomplex gas mixtures and to quantify the rates of adsorption for various adsorbent\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ematerials. For recovering uranium from seawater, two different models were produced:\u003C\/p\u003E\r\n\r\n\u003Cp\u003E(i) a predictive, multi-ligand adsorption model to incorporate effects of pH, ionic\u003C\/p\u003E\r\n\r\n\u003Cp\u003Estrength, and competing metals and (ii) an analytical model to quantify the impact of\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ecurrent velocity on the mass transfer limitations of braided fiber adsorbents. The\u003C\/p\u003E\r\n\r\n\u003Cp\u003Eculmination of these adsorption models will provide tools for scientists and engineers to\u003C\/p\u003E\r\n\r\n\u003Cp\u003Ebetter understand adsorption phenomena in the applications of interest and subsequently\u003C\/p\u003E\r\n\r\n\u003Cp\u003Edesign the necessary capture systems at both the front and back ends of the Nuclear Fuel\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECycle.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Complex Adsorption Modeling for Nuclear Energy Applications"}],"uid":"27707","created_gmt":"2017-03-20 15:25:12","changed_gmt":"2017-03-20 15:25:12","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-04-03T12:00:00-04:00","event_time_end":"2017-04-03T14:00:00-04:00","event_time_end_last":"2017-04-03T14:00:00-04:00","gmt_time_start":"2017-04-03 16:00:00","gmt_time_end":"2017-04-03 18:00:00","gmt_time_end_last":"2017-04-03 18:00:00","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":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}