Stephen Dewitt Email & Phone Number

King Of Prussia, Pa, Us

King Of Prussia

Cambridge, Massachusetts, United States

Member of Professor Zachary Smith's and Professor T Alan Hatton's groups focusing on advanced manufacturing and materials development for complex chemical separations• Designed and constructed a single line hollow fiber spinning system for the manufacture of a variety of different asymmetric hollow fiber membranes and asymmetric gas diffusion electrodes• Ongoing work focused on the scale-up and spinning of novel porous polymer materials and MOF mixed matrix membranes into hollow fibers for application to a wide range of gas mixture membrane separations• Designing a process to coat the external surface of fiber support with an active layer to work as an integrated hollow fiber gas diffusion electrode for electrochemical CO2 capture from industrial streams• Developed a post-synthetic ligand exchange process for branched MOF materials, a new metastable morphology of porous crystalline filler, and incorporated the mixed ligand crystals into polymer membranes to study fundamental transport properties.

Atlanta, Georgia

Graduate Researcher, The Lively Group• Synthesized, manufactured, and scaled up (~100g) sorbent-polymer composite fibers for adsorptive separation of CO2 from flue gas• Developed, in collaboration with a post-doc, an Aspen Plus model to describe the economic pre- and post-treatment of flue gas and CO2 to enable sub-ambient pressure swing capture of CO2 • Designed and manufactured novel microcapsule-sorbent-polymer fiber composite for the management of heat in adsorption processes, testing performance and long-term stability• Microcapsule-polymer composites, developed in tandem with earlier sorbent composites, have shown promise for textile heat management application, resulting in a new project with industry partners to further develop the technology. • Worked in a team of 11 (five faculty, three post-docs, three graduate students) on DOE grant focused on developing a new approach to adsorptive CO2 capture • Mentored and trained three undergraduate students in materials synthesis, scale-up, and adsorptive separations

Idaho Falls, Id

• Developed several models linking secondary steam from nuclear power cycle to chemical processes including High-Temperature Steam Electrolysis, Biomass, Coal, and Natural Gas to Liquids • Collaborated with industry partners analyzing coupling of next-generation nuclear reactors with various chemical processes• Modeling was primarily carried out in Aspen Plus and Aspen HYSYS, briefly worked with Modelica• Participant in Integrated Nuclear-Renewable Energy Systems: Foundational Workshop Report (2014)• Mentored and trained one undergraduate in process modeling and optimization• Poster Presented at 2015 AIChE Student Conference, Atlanta, GA

Idaho Falls, Id

Nashville, Tn

Pintauro Group, Dept of Chemical Engineering• Developed a post-treatment strategy for Aquivion ® membranes using thermally assisted stretching• Explored application of treated membranes for Direct-Methanol Fuel Cells• Tested permeation and conductivity of different materials

Doctor Of Philosophy - Phd, Chemical Engineering

Activities and Societies: American Institute of Chemical Engineering International Adsorption Society Eastman Chemical Graduate Fellowship.

Bachelor Of Science - Bs, Chemical Engineering

Activities and Societies: Chancellors Commonwealth Scholar Top Graduate Nanomaterials Engineering (2015) Tau Beta Pi (2013-2015) Omega Chi.