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����APP chemical engineering PhD students win three brewing categories at professional conference in Boston 

Two teams of ����APP chemical engineering PhD students recently walked away with a trio of top awards in a competition with dozens of other aspiring scientists—in brewing beer.

The Case Western Reserve teams won three of the seven categories at an annual conference of the . The institute’s.

Over the Hops CWRU Brewing - Best New Team, Most Efficient Brew

Will Dean—Research focuses on understanding the bulk and interfacial properties of new electrolytes for energy storage devices; hopes to head his own research lab, continuing to work on energy storage technology.

Bethany Kersten—Research focuses on studying the electrochemistry of actinides for recycling of nuclear fuel; hopes to continue research, work in a national lab and move into a climate-policy position.

Drace Penley—Research focuses on developing electrolytes for lithium batteries; hopes to continue on as a postdoctoral researcher post-graduation and eventually land a faculty position.

Rachel Beller—Research focuses on electrode reactions in batteries; hopes to work at a national lab or do research in industry.

The Brew Crew - Best Poster

Maura Sepesy—Research focuses on membrane separation for medical isotope purification; hopes to teach and encourage the next generation of future scientists.

Jacob Hostert—Research focuses on nutrient-recovery using peptides; hopes to use academic skills to improve the environment.

Marola Issa—Research focuses on complex fluids/soft matter and working to measure transient rheology in drying coatings; hopes to one day become a thought leader in field and start her own business. 

Hairou Yu—Research focuses on the adhesion of soft particles to boundaries; hopes to teach and conduct research for entire career.

The teams came out of a casual group of about eight friends—who also love both chemistry and beer. They began to meet up at each other’s homes for brew parties early in the pandemic.

“They really were several-week parties—one weekend for ‘the boil’ and then a meet-up later to bottle it,” said Bethany Kersten, a member of the Over the Hops team. “We were just having fun, but found out we can make pretty good beer.”

The science of beer

For the competition, the Over the Hops team brewed up beers like “Coraline’s Brew,” a high-powered (8.8% alcohol) black IPA; and “Toasty Oat,” a smooth, lower-alcohol (5.1%) oatmeal stout. Another beer featured hops grown in locations related to wherever each of them attended undergraduate school. Those areas include Ohio, Minnesota, Idaho and so on.

“We’re all IPA drinkers and that Black IPA was our favorite,” said Kersten, whose research at Case Western Reserve focuses on studying the electrochemistry of actinides for recycling of nuclear fuel. “It’s sort of a wintery IPA and it was a big hit at the competition, at least based on the blind taste tests that people could take.”

Dean said the team went for a more “drinkable beer” with the stout, which has notes of coffee, peanut butter, nutmeg and vanilla—and low bitterness.

The judges awarded the Over the Hops team with “the Most Efficient Brew” and best new team. The Brew Crew concocted “Poison Apple Ale” and two others, but won first place for its scientific poster showing the brewing process. 

Chris Wirth, an assistant professor in chemical and biomolecular engineering, said beermakers use many of the same principles fundamental to chemical engineering. Wirth helped the students set up the AIChe trip.

“Concepts like heat transport and mixing are as useful when brewing beer in your kitchen as if you’re making millions of barrels for Stella or whomever, it’s much of the same science,” Wirth said. 

Dean, whose research focuses on understanding the bulk and interfacial properties of new electrolytes for energy storage devices, said even a decision like how much sugar to add during the brewing process is critical.

“Home brewers have tales of bottles exploding because they had too much sugar,” he said. “They cap it and the CO2 has nowhere to go.”

Penley, who researches developing electrolytes for lithium batteries, said the student-scientists would likely keep on with their casual brewing.

“Chemical engineers like making beer because they can make it at home—and they can make it well,” Penley said. “The science here is knowing when you add the hops, knowing when the alpha acids will come out of those hops. But there’s also an art to it, so that in the end, you’ve just got good beer.”

For more information, contact Mike Scott at mike.scott@case.edu.

This article was originally published Feb. 8, 2022.