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Houston biotech's new CFO, new Texas solar project, and more energy transition things to know this week

Houston energy transition folks — here's what to know to start your week. Photo via Pexels

Editor's note: Dive headfirst into the new week with three quick things to catch up on in Houston's energy transition: a roundup of events not to miss, a new Houston energy executive to know, and more.

Big deal: Houston solar company acquires Texas project site

Aggreko’s Energy Transition Solutions division has acquired the 13 MW behind-the-meter solar power project site, and the company will oversee construction, own, and operate the facility.

“Texas is an attractive market for these types of C&I projects, thanks to its robust solar resource, ease of development, and an efficient ERCOT grid connection process for projects of this size," Prashanth Prakash, Aggreko ETS chief commercial officer, says in a news release. "This project serves as another example of how we help commercial and industrial customers meet their decarbonization goals.” Read more.

New hire: Houston sustainable biotech company names new CFO

Lisa Bromiley has joined Cemvita as CFO. Bromiley will work on spearheading capital markets, strategic positioning, and financial management of the company.

"We are thrilled to welcome Lisa Bromiley to Cemvita as our CFO,” Moji Karimi, CEO of Cemvita, says in a news release. “She joins us at an inflection point in our growth trajectory and I’m confident that Lisa's strategic financial acumen will play a pivotal role in driving Cemvita's continued success." Read more.

Events not to miss

Put these Houston-area energy-related events on your calendar.

  • Hydrogen networking at Greentown Labs is Tuesday, February 20, at 4:30 pm at Greentown Houston. Register.
  • The Future of Energy Across the Americas: Helping Lawyers Predict and Adapt — the 2024 Houston Energy Conference — is February 27 to March 1. Register.
  • CERAWeek 2024 is Monday, March 18, to Friday, March 22, in the George R. Brown Convention Center. Register.

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A View From HETI

Ahmad Elgazzar, Haotian Wang and Shaoyun Hao were members of a Rice University team that recently published findings on how acid bubbling can improve CO2 reduction systems. Photo courtesy Rice.

In a new study published in the journal Science, a team of Rice University researchers shared findings on how acid bubbles can improve the stability of electrochemical devices that convert carbon dioxide into useful fuels and chemicals.

The team led by Rice associate professor Hoatian Wang addressed an issue in the performance and stability of CO2 reduction systems. The gas flow channels in the systems often clog due to salt buildup, reducing efficiency and causing the devices to fail prematurely after about 80 hours of operation.

“Salt precipitation blocks CO2 transport and floods the gas diffusion electrode, which leads to performance failure,” Wang said in a news release. “This typically happens within a few hundred hours, which is far from commercial viability.”

By using an acid-humidified CO2 technique, the team was able to extend the operational life of a CO2 reduction system more than 50-fold, demonstrating more than 4,500 hours of stable operation in a scaled-up reactor.

The Rice team made a simple swap with a significant impact. Instead of using water to humidify the CO2 gas input into the reactor, the team bubbled the gas through an acid solution such as hydrochloric, formic or acetic acid. This process made more soluble salt formations that did not crystallize or block the channels.

The process has major implications for an emerging green technology known as electrochemical CO2 reduction, or CO2RR, that transforms climate-warming CO2 into products like carbon monoxide, ethylene, or alcohols. The products can be further refined into fuels or feedstocks.

“Using the traditional method of water-humidified CO2 could lead to salt formation in the cathode gas flow channels,” Shaoyun Hao, postdoctoral research associate in chemical and biomolecular engineering at Rice and co-first author, explained in the news release. “We hypothesized — and confirmed — that acid vapor could dissolve the salt and convert the low solubility KHCO3 into salt with higher solubility, thus shifting the solubility balance just enough to avoid clogging without affecting catalyst performance.”

The Rice team believes the work can lead to more scalable CO2 electrolyzers, which is vital if the technology is to be deployed at industrial scales as part of carbon capture and utilization strategies. Since the approach itself is relatively simple, it could lead to a more cost-effective and efficient solution. It also worked well with multiple catalyst types, including zinc oxide, copper oxide and bismuth oxide, which are allo used to target different CO2RR products.

“Our method addresses a long-standing obstacle with a low-cost, easily implementable solution,” Ahmad Elgazzar, co-first author and graduate student in chemical and biomolecular engineering at Rice, added in the release. “It’s a step toward making carbon utilization technologies more commercially viable and more sustainable.”

A team led by Wang and in collaboration with researchers from the University of Houston also shared findings on salt precipitation buildup and CO2RR in a recent edition of the journal Nature Energy. Read more here.

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