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Houston researchers make breakthrough on electricity-generating bacteria

new findings

A team of Rice researchers, including Caroline Ajo-Franklin and Biki Bapi Kundu, has uncovered how certain bacteria breathe by generating electricity. Photo by Jeff Fitlow/Rice University.

New research from Rice University that merges biology with electrochemistry has uncovered new findings on how some bacteria generate electricity.

Led by Caroline Ajo-Franklin, a Rice professor of biosciences and the director of the Rice Synthetic Biology Institute, the team published its findings in the journal Cell in April. The report showed how some bacteria use compounds called naphthoquinones, rather than oxygen, to transfer electrons to external surfaces in a process known as extracellular respiration. In other words, the bacteria are exhale electricity as they breathe.

This process has been observed by scientists for years, but the Rice team's deeper understanding of its mechanism is a major breakthrough, with implications for the clean energy and industrial biotechnology sectors, according to the university.

“Our research not only solves a long-standing scientific mystery, but it also points to a new and potentially widespread survival strategy in nature,” Ajo-Franklin, said in a news release.

The Rice team worked with the University of California, San Diego's Palsson lab to simulate bacterial growth using advanced computer modeling. The simulations modeled oxygen-deprived environments that were rich in conductive surfaces, and found that bacteria could sustain themselves without oxygen. Next, they confirmed that the bacteria continued to grow and generate electricity when placed on conductive materials.

The team reports that the findings "lay the groundwork for future technologies that harness the unique capabilities" of these bacteria with "far-reaching practical implications." The team says the findings could lead to significant improvements in wastewater treatment and biomanufacturing. They could also allow for better bioelectronic sensors in oxygen-deprived environments, including deep-sea vents, the human gut and in deep space.

“Our work lays the foundation for harnessing carbon dioxide through renewable electricity, where bacteria function similarly to plants with sunlight in photosynthesis,” Ajo-Franklin added in the release. “It opens the door to building smarter, more sustainable technologies with biology at the core.”

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Dr. Nádia Skorupa Parachin has been named Cemvita’s new VP of Industrial Biotechnology. Photo via HETI

Meet Cemvita's new VP of industrial biotechnology

the view from heti

Houston-based biosolutions company Cemvita has announced a new addition to its leadership team that will further advance the company’s mission to transform the sustainable oil industry.

Dr. Nádia Skorupa Parachin has been named Cemvita’s new VP of Industrial Biotechnology. Joining Cemvita from Ginkgo Bioworks in Boston, where she held the role of Senior Director of Principal Organism Engineering, Parachin brings extensive expertise in synthetic biology, bioprocess development and strategic leadership.

Prior to her tenure at Ginkgo Bioworks, she spent nine years as a professor at the Universidade de Brasília and co-founded the Brazilian start-up Integra Bioprocessos, which is dedicated to developing biotechnological pathways that yield high-value products.

Parachin’s addition to the Cemvita team coincides with the company’s intensified focus on commercializing its capability to manufacture bio-oil from carbon waste. Cemvita has recently achieved a major milestone, now producing up to 500 barrels of sustainable oil per day—reaching the target years ahead of the original projection set for 2029. In her role, Parachin will continue their innovative work, advancing microbial productivity efficiency.

“Cemvita has built an incredible waste carbon to oil process by training microbes with peak efficiency,” said Cemvita CEO Moji Karimi in a statement. “Adding Nadia’s experience is the natural next step in commercializing this remarkable science. Her background prepared her to bring the best out of the scientists at the inflection point of commercialization – really bringing things to life.”

Echoing this enthusiasm, Parachin expressed her excitement about her new role at Cemvita.

“I’ve joined Cemvita to lead the team working on developing and improving the technologies for our bio-oil production,” she stated. “It’s a fantastic moment as we’re poised to take our prototyping to the next level, and all under the innovative direction of our co-founder, Tara Karimi. We will be bringing something truly remarkable to market and ensuring its cost effective.”

Parachin’s role comes at a strategic time, following Cemvita’s recent announcement of a significant partnership with United Airlines. Under this agreement, Cemvita will provide United with up to 50 million gallons of Sustainable Aviation Fuel (SAF) derived from CO2 annually over the next 20 years. The company’s energy transition subsidiary, Gold H2, has also recently formed a significant partnership with ChampionX. This collaboration aims to advance Gold H2’s technology designed to produce hydrogen from depleted or uneconomical oil reservoirs.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

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Houston scientists unveil faster, low-energy method to recycle lithium-ion batteries

Battery breakthrough

Rice University researchers have uncovered a more energy-efficient and faster way to recycle critical minerals from used lithium-ion batteries.

Traditional methods rely on high heat, long processing times and harsh chemicals to recover a small fraction of critical materials from batteries used in everything from smartphones to electric vehicles. However, the team from Rice's Department of Materials Science and Nanoengineering developed a process that uses a water-based solution containing amino chlorides to extract more metals in less time

The team published the findings in a recent edition of the scientific journal Small.

Simon King, a sophomore studying chemical and biomolecular engineering who completed this work as a summer research fellow at the Rice Advanced Materials Institute, served as first author of the study. He worked with corresponding authors Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering, and Sohini Bhattacharyya, a research scientist in Ajayan’s lab.

By using a hydroxylammonium chloride (HACI) solution, the team achieved roughly 65 percent extraction of key battery metals in just one minute at room temperature, according to the study. The efficiencies grew to roughly 75 percent for several metals under longer processing times.

“We were surprised by just how fast the reaction occurs, especially without the involvement of high temperatures,” King said in a news release. “Within the first minute, we’re already seeing the majority of the metal extraction take place.”

By not requiring high temperatures or long reaction times, Rice predicts the process could have a major impact on cost and the environmental impact of lithium battery recycling. Additionally, the water-based HACI solution makes waste handling easier and lowers certain environmental risks.

In addition to extracting the materials, the team went on to demonstrate that the recovered metals could be recycled and reprocessed into new battery materials.

“A big advantage of this system is that it works under relatively mild conditions,” Ajayan added in the release. “That opens the door to more sustainable and scalable recycling technologies.”

Fervo IPO leads Houston energy transition headlines for April

Hot Topics

Editor's note: The top Houston energy transition news of the month includes Fervo's official steps towards an IPO and Houston universities teaming up for recycling innovation. Below are the five most-read EnergyCapital stories published April 16-30, 2026:

Fervo Energy officially files for initial public offering

Fervo Energy has officially filed for IPO. The Houston-based geothermal unicorn filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission on April 17 to list its Class A common stock on the Nasdaq exchange. Fervo intends to be listed under the ticker symbol "FRVO." Continue reading.

Fervo Energy adds former eBay CEO Meg Whitman, other leaders to board

As it prepares for a highly anticipated IPO, Houston-based geothermal power provider Fervo Energy has added four heavyweights to its board of directors. The most notable new board member is Meg Whitman, former CEO of eBay, Hewlett-Packard, and Spring-based HPE, and former U.S. ambassador to Kenya. She joined the Fervo board as lead independent director. Continue reading.

Tesla's EV Robotaxis officially launch in Texas' largest metros

Tesla’s Robotaxi service has taken to the streets of Houston. In a brief statement Saturday, April 18 on its X social media account, Tesla Robotaxi says the autonomous rideshare service just launched in Texas’ two biggest metro areas — Houston and Dallas. Continue reading.

Halliburton Labs names 4 new clean energy startups to incubator

Four new companies have joined Halliburton Labs, the incubator for early-stage energy and climate startups run by Houston energy giant Halliburton. Halliburton Labs provides the emerging companies with mentorship, industry connections, laboratory access and other resources as they work toward commercialization. Continue reading.

Rice, UH launch joint effort to accelerate plastics recycling solutions

Institutes at two Houston universities are joining forces to help position the city as a global leader in plastics recycling innovation. The Center for Energy Studies (CES) at Rice University’s Baker Institute for Public Policy and the University of Houston’s Energy Transition Institute (UH-ETI) have announced a strategic partnership that aims to develop real-world solutions for plastic recycling. Continue reading.

Houston-area plastics company debuts state-of-the-art headquarters

new hq

Ultra-high-performance plastics company Drake Plastics officially opened its new state-of-the-art, 140,000-square-foot manufacturing center and corporate office in Cypress last month.

Dubbed “Drake HQ, ” the new facility was built to align with Harris County’s clean energy goals and features a 1.3-megawatt solar generation plant designed to offset 50 percent of the plant’s power consumption.

The facility is designed as a “factory ranch,” and is intended to blend in with its natural surroundings. With the expanded campus, Drake says it looks to serve existing and new customers in the semiconductor, aerospace, energy and defense industries.

The new headquarters is designed as a "factory ranch" and features a solar generation plant to offset half of its power consumption. Photo via LinkedIn

“We are thrilled to open the doors of our new headquarters in the area where it all began,” Drake Plastics President Steven Quance said in a news release. “We are honored to have reinvested in the community that has supported our growth and success over the past three decades.”

Drake Plastics cut the ribbon on March 26 at the new facility, which also marked the company’s 30th anniversary in the Cypress area. The company launched in 1996 with four employees and has grown to employ more than 100 staff members, according to a LinkedIn post.

Drake Plastics is a globally recognized leader in ultra-high-performance polymer manufacturing and specializes in extrusion, injection molding, precision machining, machine building, engineering and distribution. According to the company, its new Cypress facilty is one of the largest in the world that processes these high-performance polymers.

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