Stanley Cho ’23


Chemical and Biological Engineering

Project Title

Mineral Dissolution

Presentation Link

View Stanley's Presentation

I studied the manner and rates at which minerals dissolve, focusing on certain carbonates, phosphates and silicates. This has important implications for the management of inorganic nutrients in soils, the development of sustainable agricultural and forestry practices, and the carbon cycle and carbon sequestration. I used the PHREEQC software for geochemical speciation modeling to write code for calculating theoretical dissolution rates in the field. I also learned about the lab techniques X-ray reflectivity (XRR) and grazing-incidence small-angle X-ray scattering (GISAXS), and I experienced how to analyze synchrotron data using programs like IgorPro and Excel. Most of my work involved normalizing and correcting experimental data and extracting important mineral properties such as roughness, thickness and density. I believe the technical and interpersonal skills I gained have prepared me for academic research in this field. I look forward to incorporating these skills to better understand environmental issues and complete my senior thesis.

Internship Year


Project Category

Water and the Environment


Interfacial Water Group, Department of Civil and Environmental Engineering, Princeton University


Ian Bourg, Assistant Professor of Civil and Environmental Engineering and the High Meadows Environmental Institute; Bastien Wild, Postdoctoral Research Associate, Andlinger Center for Energy and the Environment