Udita Ringania is a Ph.D. candidate in the school of Chemical and Biomolecular Engineering at Georgia Tech, advised by Dr. Saad Bhamla. Her research focuses on developing a sustainable, energy-efficient, low cost and easily scalable alternative for drying/dewatering cellulose nanomaterials, a high value forest product. She is the recipient of the 2020-2021 Blue Sky Young Researcher and Innovation Award presented by the International Council of Forest and Paper Associations (ICFPA). She has served as a leadership coach for Georgia Tech students through the LEAD program (2019-2021) and was a board member for AChEGS (2019-2020), a student run organization for graduate students. She holds a Master’s degree (2018) from the Indian Institute of Technology, Kharagpur, and an undergraduate degree (2015) from the National Institute of Technology, Rourkela, India, both in Chemical Engineering. She loves plants, volunteers at Trees Atlanta, and recently started running to help raise funds for the education of underprivileged children in India.

Advisor: Saad Bhamla

Dr. Realff’s broad research interests are in the areas of process design, simulation, and scheduling. His current research is focused on the design and operation of processes that minimize waste production by recovery of useful products from waste streams, and the design of processes based on biomass inputs. In particular, he is interested in carbon capture processes both from flue gas and dilute capture from air as well as the analysis and design of processes that use biomass.

Joseph K. Scott is an associate professor in the School of Chemical and Biomolecular Engineering at the Georgia Institute of Technology. He received his BS from Wayne State Univ. and his MS and PhD from the Massachusetts Institute of Technology (MIT), all in chemical engineering. His honors include the 2012 Best Paper Award from the Journal of Global Optimization, the 2016 W. David Smith, Jr. Award from the Computing and Systems Technology Div. of AIChE, the 2014–2016 Automatica Paper Prize from the International Federation of Automatic Control, and the 2016 Air Force Young Investigator Research Program Award. His research interests include process modeling and simulation, dynamic systems, process control, and optimization theory and algorithms.

Dr. Chance retired from Global Thermostat at the end of 2022, where he served as a Senior Science Advisor. He continues at the Georgia Institute of Technology where he serves as an Adjunct Professor. Dr. Chance began his career with Honeywell Corporation, holding a number of research positions including Research Manager for Electronic Materials.

In 1986, he joined Exxon as the Director of their Polymers and Fluids Laboratory, later serving as Division Manager for their Paramins Technology division, and as Distinguished Scientific Advisor in ExxonMobil’s Corporate Strategic Research Laboratories. Dr. Chance retired from ExxonMobil in 2006 and joined the Georgia Institute of Technology as a faculty member with a joint appointment in the School of Chemical and Biomolecular Engineering and the School of Chemistry and Biochemistry, continuing also as Distinguished Scientific Advisor Emeritus at ExxonMobil from 2006-2009. 

He joined Algenol Biofuels (2009-2019) as Executive Vice President for Engineering. Dr. Chance's scientific interests are focused on CO² capture and utilization, including Direct Air Capture, as a mitigation strategy for climate change. 

Dr. Chance has organized several international scientific meetings and served on numerous university and industrial advisory boards. He has published over 150 peer-reviewed articles, edited two books, and authored over 30 patents. He was elected Fellow in The American Physical Society in 1988 and was the 2018 recipient of the Lawrence B. Evans Award from the American Institute of Chemical Engineers, an institute level award for career achievement.

Materials for membranes, sorbents, and barrier packaging applications rely upon the same fundamental principles. Thermodynamically controlled partitioning of a penetrant, such as carbon dioxide into a membrane, sorbent or barrier packaging layer is the first step in the transport process. If the material is a polymer, cooperative motions of the matrix enable diffusive motion by the penetrant. In highly rigid carbon molecular sieves and zeolites, motion of the matrix is negligible, and penetrant transport is governed by the relative size of pre-existing pores and the penetrant molecule.

Koros’s group is a leader in developing advanced materials for membranes, sorbents, and barrier applications by optimization materials to either promote or retard transport of specific components. For instance, for a chosen penetrant such as carbon dioxide, the Koros group can create a barrier, a selective membrane, or a sorbent by materials engineering. Work is also underway in the Koros group to form “mixed matrix composite” materials comprised of blends of metal organic framework or other specialty components within the matrix of a conventional polymer. This approach allows further optimization of transport properties without sacrificing the ease of processing associated with conventional polymers.

Effects due to non equilibrium thermodynamic and non-Fickian transport phenomena are additional topics his group studies. Long lived conditioning effects due to exposure of membranes and barriers to elevated concentrations of certain penetrants are typical of such non equilibrium phenomena. Protracted aging of glassy polymers, carbons, and inorganic membranes after formation or conditioning treatments also are of interest to his research group. In many cases, these effects seem to defy logic—until one realizes that an expanded set of rules governs these out-of-equilibrium materials.