Rice University researchers have developed a new method for removing PFAS from water that works 100 times faster than traditional filters. Photo via Rice University.

Rice University researchers have teamed up with South Korean scientists to develop the first eco-friendly technology that captures and destroys toxic “forever chemicals,” or PFAS, in water.

PFAS have been linked to immune system disruption, certain cancers, liver damage and reproductive disorders. They can be found in water, soil and air, as well as in products like Teflon pans, waterproof clothing and food packaging. They do not degrade easily and are difficult to remove.

Thus far, PFAS cleanup methods have relied on adsorption, in which molecules cling to materials like activated carbon or ion-exchange resins. But these methods tend to have limited capacity, low efficiency, slow performance and can create additional waste.

The Rice-led study, published in the journal Advanced Materials, centered on a layered double hydroxide (LDH) material made from copper and aluminum that could rapidly capture PFAS and be used to destroy the chemicals.

The study was led by Rice professor Youngkun Chung, a postdoctoral fellow under the mentorship of Michael S. Wong. It was conducted in collaboration with Seoktae Kang, professor at the Korea Advanced Institute of Science and Technology, and Keon-Ham Kim, professor at Pukyung National University, who first discovered the LDH material.

The team evaluated the LDH material in river water, tap water and wastewater. And, according to Rice, that material’s unique copper-aluminum layers and charge imbalances created an ideal binding environment to capture PFAS molecules.

“To my astonishment, this LDH compound captured PFAS more than 1,000 times better than other materials,” Chung, lead author of the study and now a fellow at Rice’s WaTER (Water Technologies, Entrepreneurship and Research) Institute and Sustainability Institute, said in a news release. “It also worked incredibly fast, removing large amounts of PFAS within minutes, about 100 times faster than commercial carbon filters.”

Next, Chung, along with Rice professors Pedro Alvarez and James Tour, worked to develop an eco-friendly, sustainable method of thermally decomposing the PFAS captured on the LDH material. They heated saturated material with calcium carbonate, which eliminated more than half of the trapped PFAS without releasing toxic by-products.

The team believes the study’s results could potentially have large-scale applications in industrial cleanups and municipal water treatments.

“We are excited by the potential of this one-of-a-kind LDH-based technology to transform how PFAS-contaminated water sources are treated in the near future,” Wong added in the news release. “It’s the result of an extraordinary international collaboration and the creativity of young researchers.”

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12 winners named at CERAWeek clean tech pitch competition in Houston

top teams

Twelve teams from around the country, including several from Houston, took home top honors at this year's Energy Venture Day and Pitch Competition at CERAWeek.

The fast-paced event, held March 25, put on by Rice Alliance, Houston Energy Transition Initiative and TEX-E, invited 36 industry startups and five Texas-based student teams focused on driving efficiency and advancements in the energy transition to present 3.5-minute pitches before investors and industry partners during CERAWeek's Agora program.

The competition is a qualifying event for the Startup World Cup, where teams compete for a $1 million investment prize.

PolyJoule won in the Track C competition and was named the overall winner of the pitch event. The Boston-based company will go on to compete in the Startup World Cup held this fall in San Francisco.

PolyJoule was spun out of MIT and is developing conductive polymer battery technology for energy storage.

Rice University's Resonant Thermal Systems won the second-place prize and $15,000 in the student track, known as TEX-E. The team's STREED solution converts high-salinity water into fresh water while recovering valuable minerals.

Teams from the University of Texas won first and second place in the TEX-E competition, bringing home $25,000 and $10,000, respectively. The student winners were:

Companies that pitched in the three industry tracts competed for non-monetary awards. Here are the companies named "most-promising" by the judges:

Track A | Industrial Efficiency & Decarbonization

Track B | Advanced Manufacturing, Materials, & Other Advanced Technologies

  • First: Licube, based in Houston
  • Second: ZettaJoule, based in Houston and Maryland
  • Third: Oleo

Track C | Innovations for Traditional Energy, Electricity, & the Grid

The teams at this year's Energy Venture Day have collectively raised $707 million in funding, according to Rice. They represent six countries and 12 states. See the full list of companies and investor groups that participated here.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.

Houston startup is off to the races with its innovative running shoes

running start

Despite Houston’s reputation as a sneaker town, there are few actual shoe companies headquartered in the Bayou City. One that is up and running is Veloci Running, an innovative enterprise that combines the founder’s history as a track runner for Rice University with the realities of running in a changing world.

Tyler Strothman started running cross country growing up in Wisconsin and Indiana before moving to Texas to attend Rice in 2020. Naturally, his college life was altered significantly by the COVID-19 pandemic. Unfortunately, Strothman contracted the virus, leading to pneumonia and causing him to consider other plans for his future.

One thing that stood out from Strothman’s running career was how bad his shoes fit.

“Traditional shoes narrowed in, cramped the front of my feet, and it was causing foot pain,” he said in a video interview. “But any other shoes that were shaped to better fit the natural foot shape were more barefoot (style)—they were more minimalist overall. And that was hurting my calf and Achilles. It was pulling on it, kind of like a rubber band.”

Strothman decided to start Veloci and went on to win the annual Liu Idea Lab for Innovation and Entrepreneurship's H. Albert Napier Rice Launch Challenge in 2025. The win secured $50,000 in startup money, which Strothman used to immediately launch his new runner-centered shoe design with himself as the CEO at the age of 24.

Along for the jog was Strothman’s college friend, Austin Escamilla, who serves as chief operating officer. Escamilla believed in Strothman’s vision, but the project immediately ran into snags beyond Veloci’s control, particularly with manufacturing in Asia.

“It was quite a year to start a shoe business, especially dealing with tariffs and global economic trade tensions,” he said in the same video interview. “We've luckily had some really good partners and really solid advisors throughout the journey who've either done it or had some good feedback and advice. It certainly takes a village, but every day is different. So, it's fun to come into work every day and problem solve.”

The flagship Veloci shoe is the Ascent, which comes in both men’s and women’s sizes. It combines the wide toe cage that Strothman wanted with extra support cushion for a softer, easier run. They retail at $180. Strothman has personally been testing them for a year, noticing reduced lower leg pain when he runs.

At the same time, Veloci has attended to some of the more unique running problems in Houston and other hot, Southern states. A combination of heat and humidity makes for a very soggy shoe if not designed with such environments in mind. The Ascent is built to be very open and breathable, allowing hot air to flow and keeping sweat from building up. These various comfort improvements have made the Ascent Strothman’s favorite running shoe.

“I put on more pairs of this Veloci shoe than I have in my other running shoes in the last seven years,” he said

Currently, Veloci is still a very niche brand. Since the company launched last year, they’ve sold roughly 10,000 pairs. Those sales come either directly through their website or from specialty running stores, most of which are located around the Houston area, like Clear Creek Running Company in League City.

Building community around the shoe through these specialty retailers has been a prime marketing strategy. Part of the $50,000 grant went to a custom van that Veloci can take to various 5Ks, runs and events to get people interested in the brand. The personal touch has helped news of Veloci spread through the running world.

“We went to many run clubs throughout the last year,” said Escamillia. “We've been to pretty much every one of the major run clubs at least once or twice. Folks who try on the shoes, love them, become fans and post and repost…. The marketing side's been a lot of fun.”