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Houston researchers propose model to scale e-waste recycling

critical research

Jian Shi, Chuyue Wang and Kailai Wang have developed a model that aims to make recycling e-waste economically viable and help recover critical minerals needed for EVs. Photo courtesy UH.

The “missing link” in critical minerals may have been in our junk drawers all along, according to new research from the University of Houston.

Jian Shi, an associate professor in the UH Cullen College of Engineering, and his team have unveiled a new supply chain model that aims to make e-waste economically viable and could help make large-scale recycling possible.

Shi, along with professor Kailai Wang and graduate researcher Chuyue Wang, published the work in a recent issue of Nature. Their study outlines how gold, lithium and cobalt from discarded electronics can be kept circulating in the U.S. through the process of “urban mining.” It was supported by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) through the Vehicle Technologies Office.

The team’s research found that e-waste is the fastest-growing solid waste stream in the world. When waste from smartphones or tablets is left unmanaged, the devices can leak hazardous waste and pose significant fire risks due to aging batteries. Additionally, when they are shipped off to foreign landfills, the U.S. loses the potential to recycle or reuse the critical minerals left inside.

“A lot of people have iPads or old iPhones sitting in their drawers right now, and that’s a waste of a critical resource,” Shi said in a news release. “Urban mining allows us to extract the same high-value materials found in traditional mines without the environmental destruction. More importantly, it helps secure our domestic supply chain for the technologies of tomorrow.”

According to UH, recycling e-waste has not succeeded in the U.S. due to a fragmented recycling system, in which manufacturers, collectors and recyclers operate separately, driving up costs.

The UH team's research looks to change that.

In the study, the researchers modeled streamlined recycling efforts by mapping the interactions between manufacturers and independent recycling markets. Their dual-channel closed-loop supply chain (CLSC) model identified how these players can transition from competitors to partners, which can distribute profits more equitably and make recycling efforts more financially attractive.

According to UH, the research has particular significance due to the growing demand for electronic vehicles and their batteries.

“We can improve the performance of the entire recycling ecosystem and make the profit distribution more balanced,” Wang said in the release. “This ensures that the materials we need for EVs and advanced electronics stay right here in the U.S.”

“By making recycling work at scale, we aren’t just cleaning up waste,” Shi added. “We’re building a foundation that benefits both our national security and our economy.”

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ExxonMobil can bring a defamation lawsuit against California’s attorney general over comments about its recycling efforts. Getty Images

Texas federal judge allows lawsuit against California AG over ExxonMobil remarks

In the News

A federal judge in Texas ruled that ExxonMobil can bring a defamation lawsuit against California’s attorney general over comments about the company’s plastic recycling efforts.

U.S. District Judge Michael J. Truncale in the Eastern District of Texas said in a ruling in February that California Attorney General Rob Bonta cannot claim official immunity in regards to several statements he made, including one in a campaign email sent to Texas residents.

Bonta sued Exxon in September 2024, saying that the oil giant encouraged consumers to purchase plastics products with the promise that the products would be recycled. He said less than 5% of plastic is recycled into another plastic product, and that recycling processes touted by Exxon don't work. Exxon said the problem is with California's recycling system.

Exxon later sued Bonta in his individual capacity and environmental groups for defamation, saying that the comments harmed current and future business contracts. The lawsuit was filed in Texas, near its principal place of business.

Truncale dismissed the lawsuit against the environmental groups but allowed it to proceed against Bonta.

The judge pointed to a campaign email Bonta sent to Texas residents saying that only 5% is recycled and the rest ends up in the environment and in our bodies: “Exxon Mobil knew, and Exxon Mobil lied.” Bonta, a Democrat, argued he was simply updating email recipients on his office's activities.

But Truncale said a campaign contribution link on the email turned the communication into a campaign activity not protected by immunity in Bonta's official capacity as attorney general.

“Here, the contribution request betrays the email's true nature: a campaign promotion. Campaigning is not within Bonta's scope of employment,” the judge wrote.

Bonta has filed a notice of appeal.

“The Attorney General looks forward to vigorously litigating this case, and is proud to advance his lawsuit against ExxonMobil,” his press office said.

ExxonMobil said in a statement that the “campaign of lies designed to derail our advanced recycling business must stop.”

The Houston projects involve the innovative reuse of oil rig platforms and wind turbines. Courtesy rendering

UH projects propose innovative reuse of wind turbines and more on Gulf Coast

Forward-thinking

Two University of Houston science projects have been selected as finalists for the Gulf Futures Challenge, which will award a total of $50 million to develop ideas that help benefit the Gulf Coast.

Sponsored by the National Academies of Science, Engineering and Medicine’s Gulf Coast Research Program and Lever for Change, the competition is designed to spark innovation around problems in the Gulf Coast, such as rising sea levels, pollution, energy security, and community resiliency. The two UH projects beat out 162 entries from organizations based in Alabama, Florida, Louisiana, Mississippi, and Texas.

“Being named a finalist for this highly competitive grant underscores the University of Houston’s role as a leading research institution committed to addressing the most pressing challenges facing our region,” said Claudia Neuhauser, vice president for research at UH.

“This opportunity affirms the strength of our faculty and researchers and highlights UH’s capacity to deliver innovative solutions that will ensure the long-term stability and resilience of the Gulf Coast.”

One project, spearheaded by the UH Repurposing Offshore Infrastructure for Continued Energy (ROICE) program, is studying ways to use decommissioned oil rig platforms in the Gulf of Mexico as both clean energy hydrogen power generators as well a marine habitats. There are currently thousands of such platforms in the Gulf.

The other project involves the innovative recycling of wind turbines into seawall and coastal habitats. Broken and abandoned wind turbine blades have traditionally been thought to be non-recyclable and end up taking up incredible space in landfills. Headed by a partnership between UH, Tulane University, the University of Texas Health Science Center at Houston, the city of Galveston and other organizations, this initiative could vastly reduce the waste associated with wind farm technology.

wind turbine recycled for Gulf Coast seawall.Wind turbines would be repurposed into seawalls and more. Courtesy rendering

"Coastal communities face escalating threats from climate change — land erosion, structural corrosion, property damage and negative health impacts,” said Gangbing Song, Moores Professor of Mechanical and Aerospace Engineering at UH and the lead investigator for both projects.

“Leveraging the durability and anti-corrosive properties of these of decommissioned wind turbine blades, we will build coastal structures, improve green spaces and advance the resilience and health of Gulf Coast communities through integrated research, education and outreach.”

The two projects have received a development grant of $300,000 as a prize for making it to the finals. When the winner are announced in early 2026, two of the projects will net $20 million each to bring their vision to life, with the rest earning a consolation prize of $875,000, in additional project support.

In the event that UH doesn't grab the grand prize, the school's scientific innovation will earn a guaranteed $1.75 million for the betterment of the Gulf Coast.

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This article originally appeared on CultureMap.com.

Chambers County has helped fund a new recycling support center in Mont Belvieu that will process post-consumer plastic materials. Photo via Getty Images.

Houston-area logistics co. breaks ground on recycling center tied to circularity hub

coming soon

TALKE USA Inc., a Houston-area arm of German logistics company TALKE, broke ground on its new Recycling Support Center in Mont Belvieu Aug. 1.

The facility will process post-consumer plastic materials, which will then be further processed at Cyclyx's new Houston-based Circularity Center, a first-of-its-kind plastic waste sorting and processing facility that was developed through a joint venture between Cyclix, ExxonMobil and LyondellBasell.

The materials will ultimately be converted into recycling feedstock.

“We’re proud to break ground on a facility that reflects our long-term vision for sustainable growth,” Richard Heath, CEO and president of TALKE USA Inc., said in a news release. “This groundbreaking marks an important milestone for our team, our customers, and the Mont Belvieu community.”

The new facility was partially funded by Chambers County, according to the release. The Baytown Sun reports that the county put $1 million towards the construction of the project, which brings advanced recycling and mechanical recycling to the area.

TALKE USA said it plans to share more about the new facility and its impact in the future.

Meanwhile, the Houston-based Cyclyx Circularity Center (CCC1) is slated to open this year and is expected to produce 300 million pounds of custom-formulated feedstock annually. A second circularity center, CCC2, is expected to start up in the Dallas-Fort Worth area in the second half of 2026. Read more here.

Birol Dindoruk is known for his research in carbon capture and storage, fluid-rock interactions and hydrogen storage. Courtesy photo

4 Houston inventors named to prestigious national organization

Top Honor

Houston is home to four new senior members of the National Academy of Inventors.

To be eligible to be an NAI Senior Member, candidates must be active faculty, scientists and administrators from NAI member institutions that have demonstrated innovation and produced technologies that have “brought, or aspire to bring, real impact on the welfare of society,” according to the NAI. The members have also succeeded in patents, licensing and commercialization, and educating and mentoring.

The University of Houston announced that three professors were selected to join the prestigious NAI list of senior members. UH now has 39 faculty members on the NAI list.

“We congratulate these three esteemed colleagues on being named NAI Senior Members,” Ramanan Krishnamoorti, vice president for energy and innovation at UH, said in a news release. “This recognition is a testament to their dedication, research excellence and pursuit of real-world impact by knowledge and technologies. Their achievements continue to elevate the University as a leader in innovation and entrepreneurship.”

UH’s new senior members include:

  • Birol Dindoruk, the American Association of Drilling Engineers Endowed Professor of Petroleum Engineering and Chemical and Biomolecular Engineering at the Cullen College of Engineering. He is known for his research in carbon capture and storage, fluid-rock interactions and hydrogen storage. He holds three patents.
  • Megan Robertson, the Neal R. Amundson professor of chemical and biomolecular engineering at UH’s Cullen College of Engineering. She is developing new polymers and groundbreaking strategies for recycling and reusing plastics. Robertson currently has three patents and two more patent applications pending.
  • Francisco Robles Hernandez, a professor of mechanical engineering technology at the UH College of Technology. He holds four patents, and several others are under review. His work focuses on carbon materials, including pioneering work with graphene and designs with steel and aluminum used in automotives and railroads.

“Being named a senior member is both an honor and a responsibility, and I appreciate UH for nurturing an environment where creativity and innovation are not just encouraged but expected,” Dindoruk said. “Ultimately, this milestone is not just about past achievements. It is about future opportunities to innovate, collaborate and make a meaningful impact on both industry and society.”

Allison Post, associate director of electrophysiology research and innovations and manager of innovation partnerships at the Texas Heart Institute at Baylor College of Medicine, also made the list. Post was recognized for her work in biomedical engineering and commitment to advancing cardiovascular care through innovations. Post is the youngest member to be inducted this year.

Other notable Texas honorees include Emma Fan from the University of Texas, Arum Han from Texas A&M and Panos Shiakolas at UT Arlington.

In 2024, Edward Ratner, a computer information systems lecturer in the Department of Information Science Technology at the University of Houston’s Cullen College of Engineering, and Omid Veiseh, a bioengineer at Rice University and director of the Biotech Launch Pad, were named NAI fellows.

The Senior Member Induction Ceremony will honor the 2025 class at NAI’s Annual Conference June 23-26 in Atlanta, Georgia.

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A version of this story first appeared on our sister site, InnovationMap.com.

Now that it's less merry and bright, do the right thing and recycle your tree with the city of Houston. Photo by Daeun Kim on Unsplash

City of Houston provides recycle stations for Christmas tree drop off

seeing evergreen

As the holiday season comes to a close, you might be wondering what's the most sustainable way to say goodbye to your beloved Christmas tree. A city program has your solution.

The city of Houston's Solid Waste Management Department has opened 22 residential tree drop-off recycling locations throughout the area. Locals can take their live trees to one of these centers across the city, where they will be repurposed for mulch or other landscape materials.

This tree recycling program, which runs Thursday, December 26, 2024, through Friday, January 24, 2025, is part of the city of Houston for the 34rd annual tree mulching event.

Before depositing the tree or trees, be sure to remove all lights, wire, tinsel, ornaments, nails, stands, and other non-organic decorative materials. Importantly, artificial, flocked, or painted trees will not be accepted.

Below is a list of Christmas tree recycling locations, according to the city:

Open Tuesday to Sunday, 9 am to 6 pm (closed on Wednesday, January 1)

Open daily, 9 am to 6 pm

Open Monday to Saturday, 8 am to 5 pm (closed Wednesday, January 1)

Open Monday to Friday, 7 am to 5 pm, and Saturday 7 am to noon (closed Wednesday, January 1, and Monday, January 20)

  • Living Earth - 5802 Crawford Rd.
  • Living Earth - 1503 Industrial Dr, Missouri City
  • Living Earth - 1700 Highway 90A East, Richmond
  • Living Earth - 12200 Cutten Road
  • Living Earth - 16138 Highway 6, Iowa Colony
  • Living Earth - 5210 S. Sam Houston Pkwy E
  • Living Earth - 10310 Beaumont Highway
  • Living Earth - 17555 I-45 South, Conroe TX
  • Living Earth -20611 US Hwy 59, New Caney TX
  • Living Earth – 9306 FM 523, Freeport TX
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SLB teams with Liberty Energy on modular power for AI data centers

ai alliance

Houston-headquartered SLB and Denver-based Liberty Energy Inc. announced a strategic agreement this month to support the rapid growth of new data center capacity.

Under the agreement, SLB will supply modular data center infrastructure and oversee large-scale execution, while Liberty will provide modular power generation systems and behind-the-meter power management technology for developers looking to add capacity. According to Reuters, the power will come from natural gas generation.

“The bottleneck in AI infrastructure is no longer just compute. It is the ability to deliver infrastructure and power on the timelines the market now demands,” Gavin Rennick, president of SLB’s New Energy and Industrial business, said in a news release. “By bringing together complementary infrastructure and power capabilities, we will help developers accelerate deployment of new data center capacity.”

The companies seek to specifically offer the modular technologies in areas without traditional grid connections or where grid capacity is limited.

They also aim to improve the "efficiency, flexibility and environmental performance of future data center energy systems," potentially through solutions like hybrid power systems and digital energy management, according to the news release.

Goldman Sachs estimates that U.S. data center capacity will more than double from 31 gigawatts in 2025 to 66 gigawatts in 2027. Other reports predict that Houston and Texas will be home to a significant portion of the data center boom, with capacity in the city and the state also expected to double in the next few years.

“The scale and complexity of AI energy infrastructure is fundamentally changing how power systems are built and deployed,” Ron Gusek, CEO of Liberty Energy, added in the release. “Liberty’s comprehensive power service platform is engineered to meet this transition, as customers increasingly prioritize tailored, integrated solutions. Building on our long-standing relationship with SLB, we are excited to bring power solutions that address immediate capacity constraints while supporting the next generation of energy systems.”

SLB sold its onshore hydraulic fracturing business in the United States and Canada to Liberty Energy in December 2020 in exchange for a 37 percent equity interest in the company.

New Rice study details how carbon capture could reduce AI data center emissions

by the numbers

A new study out of Rice University points to carbon capture and storage methods as pivotal solutions to addressing emissions from AI-driven data centers.

The study was authored by Hon Chung Lau, an adjunct professor in the Department of Chemical and Biomolecular Engineering at Rice University and founder of Low Carbon Energies LLC, and Steve C. Tsai, an energy transition consultant at Low Carbon Energies LLC, and published in the journal Energy & Fuels.

According to the study, U.S. data center power capacity could more than quadruple in five years, growing from 40 gigawatts in 2025 to 169 gigawatts by 2030. Without proper regulation of emissions, the report estimates that carbon dioxide produced by fossil-fuel power plants supplying electricity to data centers could grow at the same scale, increasing from 90 million metric tons to more than 404 million metric tons over the same time period.

The researchers analyzed publicly available data on announced U.S. data centers, which included energy sources, locations, and projected power capacity before estimating data center-related carbon emissions based on each state’s electricity mix. From there, they examined whether those emissions could be captured and stored underground in saline aquifers.

The team estimates that 34 states have enough saline aquifer storage capacity to store more than 100 years of projected data center-related carbon dioxide emissions beyond 2030. Aquifers could store an estimated 59 million metric tons of data center-related carbon dioxide, or about 66 percent of the sector’s emissions in 2025. However, that calculation could grow to 299 million metric tons, or about 74 percent of projected data center-related emissions by 2030.

The researchers found that more than 90 percent of data center-related carbon dioxide emissions could potentially be mitigated through carbon capture and storage when out-of-state storage options are included, even though they note that carbon capture isn’t the only solution.

“It does show that the geology exists to make a meaningful impact, especially in states where data center growth is strongest,” Lau said in a news release.

Rapid growth in states including Texas, Virginia, Pennsylvania, Ohio, Arizona, Colorado, Utah and Illinois was considered in the study. According to the findings, Texas would need to add 25 gigawatts of power capacity by 2030 to meet projected data center demand, as data centers require reliable electricity 24/7.

“Data centers are becoming one of the defining energy challenges of the AI era,” Lau added in the news release. “The question is not only whether we can build enough computing infrastructure, but whether we can power it in a way that is reliable, affordable and compatible with decarbonization goals.”

Shell strikes $1.8B deal to offload solar and wind assets in India

Renewable Exit

Reflecting its ongoing de-emphasis of renewable energy, oil and gas giant Shell has agreed to sell its solar and wind power business in India for $1.8 billion.

Aditya Birla Renewables Ltd. (ABRen) is the pending buyer of Solenergi Power Private Ltd., including the Sprng Energy group of companies. Sprng Energy develops, owns and operates utility-scale solar and wind power facilities in India.

Shell, whose U.S. headquarters is in Houston, acquired Solenergi in 2022 for $1.55 billion.

ABRen is Aditya Birla Group’s renewable energy platform. Global Infrastructure Partners, part of asset manager BlackRock, is a strategic investor in ABRen. ABRen develops and operates solar, wind, hybrid and battery storage projects in India.

“This agreement reflects Shell’s continued focus on adjusting the portfolio in our power business,” Machteld de Haan, Shell’s president of downstream, renewables and energy solutions, said in a news release. “We are high-grading our power portfolio and recycling capital in service of our asset-backed trading strategy … This is another step in building a more focused, competitive, and resilient business while improving returns year on year towards 2030.”

Under Wael Sawan, who was named CEO of Shell in 2023, the company has moved away from large-scale, low-yield green energy projects to concentrate on high-margin sectors. Those sectors include natural gas, LNG, deep-water drilling and global energy trading.

The Solenergi deal, expected to close by the end of this year, signals yet another move in Shell’s reassessment of its renewables business. The company has said it will no longer invest in offshore wind projects, but it remains committed to becoming a net-zero emissions business by 2050.

Shell said India remains an important market. In India, Shell offers LNG supply and regasification for downstream users, and also operates Shell Mobility and Shell Lubricants.

The proposed sale of the Indian renewables business continues Shell’s decreasing focus on renewables. In October, Shell exited Atlantic Shores Offshore Wind, a 50-50 joint venture created to offshore wind projects off the coast of New Jersey and New York.

Shell has declared it will not make new investments in offshore wind generation, favoring existing ventures and the expansion of EV charging infrastructure.

The company also announced plans to shut down its Volta C electric vehicle charging business in August 2025.

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