first place

Inaugural Houston challenge names winning team with plastics solution

University of Houston students Sarah Grace Kimberly and Emma Nicholas won UH Energy Transition Institute's inaugural Circular Plastics Challenge. Photo via UH.edu

Dozens of Houston college students tackled circular economy challenges, and two came out on top by winning the top award.

University of Houston’s Energy Transition Institute hosted a challenge for students to address the issue of plastic waste and create a real-world circular economy, as over 60 students participated in the inaugural Circular Plastics Challenge.

Six finalist teams presented their solutions at the 2023 Energy Night hosted by the UH Energy Coalition with final pitches ranging from transportation emissions, renewable packaging and sustainable material, drones to limit excess packaging, and more topics aimed to reduce use.

Sarah Grace Kimberly and Emma Nicholas were the challenge winners. The team proposed using a liquid-based membrane filter inserted into household drains to combat microplastics found in common personal care products, such as makeup and hygiene items. The membrane’s function would act as a magnet, which would attract and capture microplastics from wastewater in showers and sinks. Both juniors from the C.T. Bauer College of Business also won the viewer’s choice award from their peers.

“We wanted to provide a simple solution to a growing problem,” Kimberly says in a news release. “Before we did this project, we didn’t know that microplastics existed, let alone in our makeup. I didn’t know I was basically putting plastic on my face every single day and washing it off into our drains. Because it’s an unseen problem, it’s hard to address.”

UH’s ETI is an academic research institute that focuses on advancing environmentally responsible energy efforts.

“If you look at the wide variety of proposals and approaches, you can see the complexity of the problem and all the different things that society must consider to find solutions,” ETI Founding Executive Director Joe Powell says in the release. “I think circularity in plastics and chemicals is as difficult to address as the net-zero issue within the energy sector, if not more. We have a unique opportunity here to tackle both, and it’s really great to see our students thinking ahead.

Other finalists included Wolff Center for Entrepreneurship seniors Nicolas Einarsson, Bennett Mainini, Arianna Chavarria, and Fernanda Ruelas, who secured second place with their renewable packaging company presentation titled “ShipSafe.”

Reverse Logistics — with team members Hasti Seraji, Farzane Ezzati, and Haowei Yang — earned third place for their consumer-driven reverse logistics approach to recycling packaging.

Trending News

A View From HETI

Fervo Energy claimed a top 10 spot on Time magazine and Statista’s new list of America’s Top GreenTech Companies of 2025. Photo via Getty Images.

The accolades keep rolling in for Houston-based Fervo Energy, a producer of geothermal power.

Fervo lands at No. 6 on Time magazine and Statista’s new list of America’s Top GreenTech Companies of 2025. The ranking recognizes sustainability-focused companies based on factors such as impact, financial strength, and innovation.

Time notes that Fervo broke ground in 2023 in Utah on what the company claims will be the world’s largest geothermal plant. The plant is scheduled to start supplying carbon-free electricity to the grid next year and to reach its 400-megawatt capacity in three years.

“Technologies like this only make a difference if we deploy them at large-scale in a way that can reduce carbon emissions and increase the reliability of the grid,” Fervo CEO Tim Latimer told Time in 2023.

The startup was named North American Company of the Year by research and consulting firm Cleantech Group for 2025. Fervo topped the Global Cleantech 100, Cleantech Group’s annual list of the world’s most innovative and promising cleantech companies.

Last year, Fervo also made Time’s list of the 200 Best Inventions of 2024. Fervo was recognized in the green energy category for its FervoFlex geothermal power system.

Founded in 2017, Fervo is now a unicorn, meaning its valuation as a private company exceeds $1 billion. The startup’s valuation is estimated at $1.4 billion. According to PitchBook data, the company raised $634 million in the fourth quarter of 2024.

In all, eight Houston-area companies appear among the top 250 greentech companies ranked by Time and Statista. Other than Fervo, they are:

  • No. 43 Lancium Technologies, an energy storage and distribution company
  • No. 50 Solugen, a producer of sustainable chemicals.
  • No. 56 Quaise Energy, which specializes in terawatt-scale geothermal power.
  • No. 129 Plus Power, a developer, owner and operator of battery storage projects.
  • No. 218 Dream Harvest, which promotes sustainable vertical farming.
  • No. 225 Cemvita, which uses synthetic biology to convert carbon emissions into bio-based chemicals.
  • No. 226 Syzygy Plasmonics, which decarbonizes chemical production.
Vermont-based BETA Technologies claimed the No. 1 spot. The company manufactures electric aircraft.

Trending News