OCGC Seminar - Richard Amos

Contaminant Remediation and Numerical Models:
You can’t have one without the other

Dr. Richard T. Amos
Assistant Professor
Institute of Environmental Science
Department of Earth Sciences
Carleton University

Contaminant Remediation and Numerical Models

Thursday, October 16th, 2014

11:30 a.m. - 3120 HP

Department Lunch
12:30 p.m. - 2130 HP

The transport and fate of contaminants in groundwater and in unsaturated soils often involves complex biogeochemical reactions coupled to physical transport and attenuation processes. Implementation of remediation schemes, particularly by in-situ methods, adds a further degree of complexity. As our understanding of these processes increases, and our ability to measure a range of geochemical data grows, interpretation of these systems can no-longer rely on arm waving and back-of-the-envelope calculations. Reactive transport models provide a means of interpreting these complex and coupled systems by quantitatively assessing the relevant processes and their effects on each other.

This presentation will cover a range of examples describing the coupled nature of contaminant and contaminant remediation systems and the application of reactive transport models to develop and refine our conceptual understanding of the controlling processes. Examples will include, oxidation of sulfide minerals in waste-rock, natural attenuation of petroleum hydrocarbons, and remediation of chlorinated solvents and metals with organic carbon and zero-valent iron, including simulations of stable isotope fractionation in these systems.