Last week was the 2024 Oklahoma Governor’s Water Conference and Research Symposium. Attendees had the opportunity to network with other water experts and professionals as well as exploring resources and sessions that cover ongoing research and outreach efforts in the state. Every year, Oklahoma Water Resources Center holds a poster contest at the Research Symposium for graduate and undergraduate students.
Congratulations to this year’s poster winners!
- Charli McGougan – University of Oklahoma
- Department: School of Civil Engineering and Environmental Science
- Co-Authors: Diego Pacherrez Gallardo, Binbin Weng, Mark Nanny and Joseph M. Suflita
- Title: Development of a SERS-Based Microfluidic Sensor for Real-Time Detection of PFAs in Aqueoous Samples Using Silver Nanoparticle (AgNPs) Aggregates Coated with Polyethyleneimine-Modified Graphene Oxide (GO-PEI)
- Abstract: PFAS (perfluoroalkyl substances) are harmful, long-lasting environmental contaminants that pose serious health risks. Detecting these substances quickly and affordably is critical but challenging due to the complexity and cost of current methods. This project focuses on developing an innovative, low-cost sensor using Raman spectroscopy to detect PFAS in water in real time.The sensor uses a specially designed SERS (Surface-Enhanced Raman Scattering) surface made of silver nanoparticles coated with modified graphene oxide. This structure attracts PFAS molecules, enhancing the detection of their unique chemical bonds. The sensor is integrated into a microfluidic device for efficient, real-time measurement. Tests using a dye standard have demonstrated significant signal enhancement and reliable performance, showing promise for affordable PFAS monitoring in environmental settings.
- Digvijay Mohite – Oklahoma State University
- Department: Plant and Soil Sciences
- Co-Authors: Mark Barbadillo, Harsanjam Singh Randhawa and Sumit Sharma
- Title: Irrigated Rotational and Continuous Cotton Production at Different Well Capacities in Oklahoma Panhandle
- Abstract: This research addresses declining water levels in the Ogallala Aquifer in the Central High Plains by focusing on cotton as a rotational crop. It evaluates how optimizing cotton irrigation and production affects soil health, water use, and farm economics. The goal is to develop sustainable, profitable farming practices that protect water resources and support regional agriculture.The project includes soil health analysis, economic evaluations, and outreach to farmers through field events, conferences, and publications. By promoting these practices, the research aims to extend the aquifer’s lifespan and support long-term agricultural sustainability in the area.
- Bipin Kafle – Oklahoma State University
- Department: Mechanical and Aerospace Engineering
- Advisor: Bruno V.M. da Silva and Khaled A. Sallam
- Title: Acceleration Effect on the Wettability of Droplets on Tubular Porous and Dense Surfaces
- Abstract: This study examines how droplet size and orientation affect their behavior on hydrophobic surfaces under gravity. Using droplets of varying sizes on polypropylene membranes, glass plates, and cylindrical surfaces, researchers observed that gravity alters the contact angles depending on size and orientation.Smaller droplets are less impacted by gravity, while larger ones show significant changes. On upward surfaces, large droplets have reduced contact angles, whereas on downward surfaces, gravity elongates the droplets, increasing their contact area and adhesion. These findings are important for applications in microfluidics, materials science, and surface engineering.
- Madison Wilson – Oklahoma State University
- Department: Civil and Environmental Engineering
- Co-Authors: Mary Foltz, Jaime Schussler and Deb Mishra
- Title: Effects of Enhanced Rock Weathering on CO2 Emissions and Leachate Quality
- Abstract: This study explores how enhanced rock weathering (ERW), a process that captures atmospheric CO2 through rock-soil interactions, affects water quality and soil CO2 emissions. Using 36-inch soil columns with varying rock-soil mixtures and application methods, researchers simulated rainwater to measure changes in emissions and leachate quality.Preliminary results suggest that adding rock slightly reduces soil CO2 emissions, though impacts on water quality, such as pH and nutrient levels, are still unclear. This research helps evaluate ERW as a strategy to reduce CO2 while understanding its environmental effects.
There were a record breaking amount of attendees and posters this year, with a total of 34 student posters that participated! We appreciate all of your hard work in water research and wish you luck in your future research!
