05/04/2026 | Press release | Distributed by Public on 05/04/2026 14:51
A project in grade school turned into a lifelong passion for Evangelia Anna Passa, an environmental engineering PhD student at the University of Cincinnati. That water waste project inspired Passa to make a difference in protecting the environment. Ultimately, it was the late Dionysious Dionysiou, PhD, who led her to choose UC for her graduate studies. Through her work in water treatment and environmental engineering, she hopes to continue his legacy and inspire positive change. She was named Graduate Student Engineer of the Month by the College of Engineering and Applied Science.
Evangelia Anna Passa was inspired by the late Dr. Dionysious Dionysiou to come to UC for her graduate studies. Photo/provided.
I graduated in 2021 with my bachelor's degree in environmental engineering from the Democritus University of Thrace in Greece. I developed a strong interest in water research, which motivated me to pursue opportunities abroad, where research in environmental engineering is both advanced and impactful.
During my search for PhD programs, I met Dr. Dionysious Dionysiou, professor of environmental engineering, and that was ultimately why I came to the University of Cincinnati. Through our discussions, I became very interested in his work and the research environment at UC's College of Engineering and Applied Science. He believed in my potential and encouraged me to join his group as a PhD student, which strongly influenced my decision to apply. In the beginning, I could not fullly understand all the opportunities that UC had to offer, but as I learned more, it was obvious that UC has a strong reputation for cutting-edge research, great academic training, and meaningful industry collaboration.
In my final year of elementary school my teacher gave us an assignment to calculate how much water we waste during everyday activities. I was surprised by how much water we were using without realizing it, and the experience sparked my interest in environmental studies. From that point on, I knew I wanted to pursue something meaningful and practical that could have a real impact on the environment. Improving the environment aligns with my values and my goals. As I grew older, I became more interested in how humans affect the environment, especially how they degrade water quality. I realized that water resources are limited and often contaminated by many known and unknown pollutants, which makes access to clean water challenging. This led me to continue my education in environmental engineering. During my undergraduate studies, I focused on water quality, particularly in drinking water and wastewater treatment, as these are essential for protecting human health and ensuring sustainable access to clean water.
Evangelia Anna Passa is inspired by the opportunity to create positive change in the environment. Photo/Provided
My research focuses on treatment technologies for emerging and persistent contaminants in drinking water and wastewater. These pollutants have been studied for years, but still, they remain difficult to remove using conventional treatment methods. I work on UV-based advanced oxidation processes, where UV light is combined with oxidants such as chlorine and hydrogen peroxide to generate reactive species that can break down these contaminants.
What motivates my work is that even though water appears clean, it can still contain trace levels of chemicals that our current systems are not fully designed to remove. This makes water quality a more complex problem than just visible pollution. I hope to contribute to the environmental field by generating knowledge, identifying and filling existing gaps, and improving treatment strategies. I am drawn to this area because it has a clear real-world impact on public health and environmental protection.
As a fourth-year PhD student, one of the most impactful experiences has been my research and collaboration with my current advisor, Assistant Professor Soryong Chae, and members of our group. I have also had the opportunity to work with researchers from multiple universities across the U.S., which has broadened my perspective and strengthened my work. I have learned that collaboration is essential in this field, as it allows us to tackle complex problems and produce meaningful work.
In addition, I have been actively involved in the Graduate Student Association within my department as well as the Graduate Student Government. This experience was particularly valuable because it allowed me to support the student community, my peers, and develop leadership and organizational skills outside of research.
One accomplishment I am particularly proud of is contributing to a peer-reviewed publication as a second author during my PhD. This reflects the effort and collaboration required to generate and comunicate meaningful research. I was also nominated for the Ohio Section American Water Works Association Graduate Scholarship, which recognizes students pursuing careers in the water sector. Being nominated was important to me because it reflects both my academic work and my commitment to the field.
I have also had the opportunity to present my research at several symposiums and conferences. These experiences allowed me to exchange knowledge, receive feedback, and connect with researchers from different areas. Even when others work on different topics, those interactions can lead to new perspectives and potential collaboration.
As a teaching assistant, I interacted with undergraduate students and mentored some of them in the lab, which helped me to improve my communication skills and taught me how to work effectively with people with different backgrounds and personalities.
I expect to graduate in Spring 2027. After that, I plan to continue working in research, either in consulting or more broadly within the water field. I am open to both industry and academic opportunities, as long as they are related to research. My goal is to keep working on meaningful problems, especially those related to water quality and treatment.
Outside of research, I enjoy cooking, baking, spending time with friends, and traveling. I believe it is important to maintain a good balance and not focus only on work or being in the lab.
Featured image at top: Evangelia Anna Passa is pursuing a PhD in environmental engineering. Photo/Provided
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