BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:3a099089-0c11-443d-8a21-298f501d0f5c.222563@calendar.missouristate.edu CREATED:20221027T184230Z LAST-MODIFIED:20221027T184230Z LOCATION:Kemper Hall 204 SUMMARY:PAMS Seminar: "Exploring the Limits of Electrosorption-Based Elect rodes for Capacitive Deionization Using Thermodynamic Principles" by Dr. Daniel Moreno-German DESCRIPTION:Dr. Daniel MorenoPAMS and Cooperative Engineering ProgramMisso uri State University\n\n\nAbstract: Capacitive deionization (CDI) is an a lternative desalination technology in which salt ions are stored within p orous electrodes. Compared to reverse osmosis for lower concentration wat er streams\, CDI has the potential to minimize energy demand and improve efficiency by operating and lower pressures and requiring less input ener gy. However\, the structure of the electrode will limit the maximum amoun t of ions that can be stored\, which can vary as a function of the initia l temperature and concentration. Such variations can reveal important inf ormation about the mechanisms of the electrode’s desalination (electrosor ption) process. \n\n\nThis work evaluates multiple types of CDI electrode s to determine their maximum storage capabilities as a function of their chemical composition. CDI processes are examined and compared for electro des with no chemical charge\, with  fixed chemical charge\, and redox-act ive electrodes with variable chemical charge. The main focal points from this research are: (1) evaluating ideal\, equilibrium-based cycles to det ermine thermodynamically if Faradaic CDI (FaCDI) can attain higher thermo dynamic efficiency\, (2) evaluating short-term cycles in continuous mode as well as through a new means for predicting batch-mode performance\, an d (3) extending batch-mode performance over a range of porous electrodes to determine fitting isotherms as well as free energy\, entropy\, and ent halpy. From this study\, we conclude that using a variable chemical charg e via FaCDI can reduce energy consumption\, improve efficiencies\, and in crease overall ion electrosorption. For all electrodes studied\, new insi ght is highlighted into the computational analysis of predicted Gibbs fre e energy\, entropy\, and enthalpy of adsorption. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p><b >Dr.&nbsp\;Daniel Moreno</b><br><b>PAMS and Cooperative Engineering Progr am</b><br><b>Missouri State University</b></p>\n<p>Abstract: Capacitive d eionization (CDI) is an alternative desalination technology in which salt ions are stored within porous electrodes. Compared to reverse osmosis fo r lower concentration water streams\, CDI has the potential to minimize e nergy demand and improve efficiency by operating and lower pressures and requiring less input energy. However\, the structure of the electrode wil l limit the maximum amount of ions that can be stored\, which can vary as a function of the initial temperature and concentration. Such variations can reveal important information about the mechanisms of the electrode’s desalination (electrosorption) process.&nbsp\;</p>\n<p>This work evaluat es multiple types of CDI electrodes to determine their maximum storage ca pabilities as a function of their chemical composition. CDI processes are examined and compared for electrodes with no chemical charge\, with&nbsp \; fixed chemical charge\, and redox-active electrodes with variable chem ical charge. The main focal points from this research are: (1) evaluating ideal\, equilibrium-based cycles to determine thermodynamically if Farad aic CDI (FaCDI) can attain higher thermodynamic efficiency\, (2) evaluati ng short-term cycles in continuous mode as well as through a new means fo r predicting batch-mode performance\, and (3) extending batch-mode perfor mance over a range of porous electrodes to determine fitting isotherms as well as free energy\, entropy\, and enthalpy. From this study\, we concl ude that using a variable chemical charge via FaCDI can reduce energy con sumption\, improve efficiencies\, and increase overall ion electrosorptio n. For all electrodes studied\, new insight is highlighted into the compu tational analysis of predicted Gibbs free energy\, entropy\, and enthalpy of adsorption.</p></body></html> DTSTART;TZID=America/Chicago:20221103T160000 DTEND;TZID=America/Chicago:20221103T170000 SEQUENCE:0 URL:https://physics.missouristate.edu/seminars.htm CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff END:VEVENT END:VCALENDAR