Event Scheduled for Oct 11, 2013
Event: Environmental Engineering Colloquium - “Adventures in sorption science: novel interactions of organic molecules and ions at the interfaces of environmental solids”
Location: CAST 212
Time: 12:15 pm
Details of Event:
“Adventures in sorption science: novel interactions of organic molecules and ions at the interfaces of environmental solids” presented by Dr. Joseph Pignatello a Senior Scientist in the Department of Soil & Water at the Connecticut Agricultural Experiment Station.
Abstract: Sorption science is a major sub-discipline of environmental science and engineering due to the critical role sorption plays in the bioavailability, environmental fate, and remediation of hazardous organic contaminants and natural compounds. The complexity and heterogeneity of environmental matrices present great challenges still in our efforts to characterize sorption processes mechanistically and develop predictive thermodynamic and kinetic models. This talk will address new understanding obtained by our group on molecular-level interactions of organic compounds with an important class of environmental sorbents: pyrogenic carbonaceous materials. PCMs include biomass char, activated carbon, and related engineered carbons, such as graphene and nanotubes, all of which have in common the fused polyaromatic ring as the fundamental unit. Some emphasis will be placed on ionic and ionizable compounds, a major category of environmental chemicals whose sorption behavior is poorly understood. Among other issues, the talk will cover sorption site availability; surface area and pore size distribution as they relate to size-exclusion and sorption suppression by natural organic matter fouling; formation of exceptionally strong hydrogen bonds; and formation of - donor-acceptor interactions with polyaromatic interfaces.
Sponsored By: Environmental Engineering Program
Pamphlet/Flyer: No Pamphlet/Flyer Available