Photo courtesy Sherbrooke University
Céline Guéguen, University of Sherbrooke professor, highlighted the use of quantum computing in identifying persistent environmental pollutants like PFAS
By William Crooks
Local Journalism Initiative
In a groundbreaking initiative, researchers at the University of Sherbrooke are leveraging quantum technology to identify and analyze per- and polyfluoroalkyl substances (PFAS), also known as “forever chemicals.” These persistent pollutants, used in everyday products such as cosmetics and textiles, are notoriously difficult to detect and regulate due to their complex chemical structure and resistance to degradation.
Dr. Céline Guéguen, a professor at the university and a leading figure in this project, highlights the novelty of integrating quantum computing into environmental science. “This is the first time quantum science is being used in such a way,” Guéguen said in a recent interview, adding that the technology accelerates the detection process by efficiently analyzing thousands of molecules to pinpoint PFAS in environmental samples. “We want to ensure the process doesn’t take days and days,” she explained.
Quantum precision meets environmental need
The collaboration involves the University of Sherbrooke, the Institut quantique’s AlgoLab, and partners such as the City of Sherbrooke and the Ministry of Environment. The aim is to improve methods for identifying and classifying PFAS, a key step toward regulating and potentially degrading these chemicals.
Quantum computing offers unparalleled precision, essential for tackling the challenge of sorting through thousands of environmental compounds. According to Guéguen, the Institut quantique’s expertise in computational programming is pivotal. “They provide the technological backbone, helping us distinguish and identify these compounds quickly and accurately,” she said.
PFAS, numbering over 4,700 identified compounds, pose serious risks to human health and ecosystems. Known to mimic hormones and linked to cancer and metabolic disorders, these substances are also extremely stable, making natural degradation nearly impossible. “Their resilience is exactly why they’re so problematic,” Guéguen noted. The research aims to mitigate this issue by first identifying and classifying PFAS, setting the stage for future work on degrading them.
A regional impact
The application of this cutting-edge research has direct implications for the Eastern Townships, particularly Lake Memphremagog, a vital drinking water source for 175,000 residents. The lake has been at the centre of concerns over potential PFAS contamination from Vermont’s Coventry landfill. A press release states Orford MNA Gilles Bélanger visited the site in early October and expressed confidence in the landfill’s protective measures. A pilot study in Coventry is currently monitoring PFAS levels to ensure they do not enter the lake.
Guéguen partially supports Bélanger’s optimism, emphasizing the value of cross-border collaboration. “We’re working with our colleagues in Vermont, and it’s a very productive partnership,” she said. She also confirmed that no PFAS have been detected in Lake Memphremagog due to the landfill’s operations. However, she stressed the importance of advancing detection technologies, noting, “This technology could eventually help test water in places like Lake Memphremagog.”
Bridging disciplines for a cleaner future
The project exemplifies the potential of interdisciplinary collaboration. While Guéguen and her colleague, Professor Armand Soldera, are not quantum scientists, they rely on the expertise of the Institut quantique to harness quantum technology effectively. The partnership not only addresses environmental challenges but also provides a platform for students to develop skills across chemistry, quantum science, and environmental studies. “This is a unique opportunity to bridge disciplines and create innovative solutions,” Guéguen remarked.
With funding from federal and provincial sources, the initiative underscores the growing recognition of quantum technology’s role in solving environmental problems. As Guéguen pointed out, “We’re just beginning to see the possibilities of applying quantum science to environmental issues. It’s an exciting field with immense potential.”
A cautious optimism
While advancements in PFAS detection are promising, challenges remain. The chemicals’ widespread use in essential products complicates efforts to reduce their introduction into the environment. Nevertheless, the University of Sherbrooke’s initiative represents a significant step forward. By combining quantum computing with environmental science, researchers aim to pave the way for more effective regulation and eventual remediation of these persistent pollutants.
As public awareness grows around the dangers of PFAS, projects like this highlight the importance of innovation and collaboration in tackling complex environmental issues. For residents of the Eastern Townships and beyond, these developments offer a glimmer of hope in the fight against forever chemicals.