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In Memoriam: Dion Dionysiou, PhD

Dionysios (Dion) Dionysiou, PhD, professor of environmental engineering in the University of Cincinnati College of Engineering and Applied Science, died unexpectedly Nov. 20. He was 57 years old. He was a world-renowned researcher, who was frequently lauded for his work developing technologies and strategies to identify, monitor, and treat water pollutants and toxins.

Throughout his career, Dionysiou served on numerous research, educational and outreach committees, and held many leadership roles. As a testament to his contribution at the international level, he was elected academician of the European Academy of Sciences and a fellow of four other professional societies (International Water Association, American Chemical Society, Royal Society of Chemistry, and Association of Environmental Engineering and Science Professors). 

He organized numerous conferences, including symposia, to highlight the pioneering work of women in environmental engineering and science. Dionysiou received more than 50 awards, including the ARCADIS Frontier in Research Award, the Outstanding Publication Award from the Association of Environmental Engineering and Science Professors, and the Sustainable Water Award from the Royal Society of Chemistry. 

Dionysiou’s childhood inspired his work in water quality. He grew up in Cyprus, where water scarcity was an ongoing issue. After earning his BS degree in chemical engineering at the National Technical University of Athens, Greece, and his master's in chemical engineering at Tufts University, Dionysiou came to UC for his doctoral studies in environmental engineering in the field of water treatment using sustainable technologies. 

Makram Suidan, UC professor emeritus, was Dionysiou’s mentor while he was a doctoral student. Recognizing Dionysiou’s commitment and intellectual leadership to his research, Suidan knew the impact Dionysiou could make in the environmental engineering program and thus advocated for the college to hire him as a faculty member. 

“Dion was highly respected among his peers and left an indelible mark at UC. He will always be remembered as a gentle person who loved his extended family of graduate students,” Suidan said. “He will be deeply missed by those of us who were fortunate enough to get to know him and call him a colleague and a friend.”

Dionysiou is survived by his wife of 32 years, Paula; daughters, Marianna and Stella; and his parents.

Visitation is 9 to 11 a.m. Tuesday, Dec. 5, at St. Nicholas Greek Orthodox Church, 7000 Winton Road, Cincinnati. Read the full obituary

In lieu of flowers, the family requests that donations be made to the Professor Dion Dionysiou Memorial Fund (8002746) at the UC Foundation website.

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