Conferences - Seminars

14NOV
2017
Thumbnail
  Tuesday 14 November 2017 12:15 - 13:15 GR C0 01

EESS talk on "Biological and chemical activities in confined flows: the role of segregation"

By Dr Pietro de Anna, Assistant tenure track professor, Institute of Earth Sciences, Faculty of Geosciences and Environment, UNIL, CH

Short biography:
Dr Pietro de Anna obtained a Master degree from the University of Florence (Italy) in Statistical Mechanics and a PhD in Geosciences from the University of Rennes 1 (Brittany, France), where he studied mixing and reactions in porous media flows. He was postdoctoral fellow at MIT (Boston, U.S.), where he learned and developed microfluidics and microscopy techniques for porous media flows investigation. Since 2015, he is an assistant tenure track professor at the Institute of Earth Sciences (ISTE) of the University of Lausanne (UNIL). his research interest focus in the physics of flow and mixing-driven processes in confined micro-structures, like filters or soil, with particular attention to their coupling with biological activities.

Abstract:
Within the shallow subsurface, soil, rock, fluids, gases and living organisms are in close interactions as a result of the coupling between fluid flows, mixing, solutes availability and microorganisms displacement and adaptation. The common challenge in all these processes is their spatial variability (heterogeneity). The consequent complexity that rises from the coupling of these processes, makes predictions based on rates measured under homogenized, well-mixed, conditions different by orders of magnitudes from laboratory and field observations.

The aim of my research is the investigation of non uniform flows through confined micro-structures coupled with the activity of biotic and a-biotic components of the subsurface. This is done with theoretical and numerical modeling combined with experiments with microfluidics devices and time-lapse video-microscopy. My interdisciplinary research targets a theoretical framework for quantitative predictions of micro-scale processes that are relevant for the larger scale spreading of pathogens, chemical contamination and remediation in soils and aquifers or geothermal energy exploration.
 

Organization EESS - IIE

Contact Prof. A. Johny Wüest, APHYS & LIMNC

Accessibility General public

Admittance Free

This event is internal