Author ORCID Identifier

https://orcid.org/0000-0002-1510-174x

Date of Graduation

2024

Document Type

Dissertation

Degree Type

PhD

College

Eberly College of Arts and Sciences

Department

Geology and Geography

Committee Chair

Shikha Sharma

Committee Co-Chair

Alexandra Hakala

Committee Member

Alexandra Hakala

Committee Member

Jaime Toro

Committee Member

Amy Weislogel

Abstract

The ever-increasing demand for clean energy requires creative solutions. In the United States, unconventional energy sources such as geothermal are conventionally limited to the western half of the country. The Appalachian Basin in the Eastern United States is one such possible creative solution, although the comparatively low temperature gradient presents a significant challenge to delivering economically feasible geothermal energy. An emerging technology is enhanced geothermal systems, these are engineered reservoirs where a working fluid (typically water) is cycled between the subsurface energy source and the energy collection facility at the surface. The liquid water interacts with the geothermal reservoir rock via dissolution and precipitation reactions. As the water is returned to the surface, it is contained and handled using a network of steel pipes where it may induce corrosion through through fluid-steel interactions. These reactions and products occurring both in the reservoir and at the surface are governed many variables, but pH and Eh are particulary important. This dissertation combines geochemical fluid-rock interaction computational modeling with fluid-steel interaction experimental data to improve the collective understanding required for assessing the suitability of geothermal energy development in the largely unexplored Appalachian Basin.

Included in

Geochemistry Commons

Share

COinS