Broadly, I am interested in the use of reactive transport modeling to better utilize water resources. To me this means understanding the fundamental processes that determine transport behavior of aqueous systems. I do this by coupling experiments and models of simplified settings to gain insights into real world problems.
Salinity is an increasing problem in groundwater systems, from seawater intrusion, to produced waters. Acidity and salinity are coupled through electrostatic interactions at the mineral surface. This work seeks to understand this phenomenon in order to determine the impact of salinity changes on water quality in groundwater systems.
Acidity is a fundamental control of most aqueous systems, yet little is known about how protons move in natural settings, such as groundwater. This work analyzes how aqueous protons interact with mineral surfaces, and how this interaction controls transport behavior.
Arsenic laden groundwater impacts the lives of millions of people around the globe. Improved techniques for remediation are needed. This work explores the use of acidity and redox chemistry to im/mobilize arsenic in engineered and natural media such as iron oxides and silica sands.