At the UH Tech Bridge, Zenith aims to accelerate its research and development of novel gas and liquid filters, according to UH, to help reduce the cost of clean hydrogen. Photo by Natalie Harms

A Houston-area startup that is purifying water and chemicals with a innovative technology has announced its new office on the University of Houston's campus.

Missouri city-based Zenith Purification develops sorbents and polymeric membranes that can be used for carbon dioxide removal, hydrogen and natural gas purification, and water purification. According to the company, its processes are cost effective and offer a more efficient way to remove contaminants from water.

At the UH Tech Bridge, Zenith also aims to accelerate its research and development of novel gas and liquid filters, according to UH, to help reduce the cost of clean hydrogen.

“We are excited to embark on a new journey with the latest addition to our vibrant community, Zenith Purification LLC,” Darayle Canada, program director, startup development operations at UH Technology Bridge, said in a statement. “With their visionary team and cutting-edge technologies, they are poised to make a significant impact in the market. Their membership at the UH Technology Bridge will provide them with a supportive ecosystem, mentorship, resources, and networking opportunities to accelerate their growth.”

Zenith was founded in 2021 by Jian J. Zou in 2021. Zou has been granted three patents for his work in polymeric membrane synthesis and process development, which are the bases of the company. In July, Zenith was awarded its first research grant from the Department of Energy.

The UH Tech Bridge focuses on providing research and development space to UH-affiliated startups and entrepreneurs. The 15-building complex and its 31,000 square feet of incubator space houses more than 20 small companies and startups that provide internship and learning opportunities for UH students, along with several federally funded research centers and institutes.

In August the Tech Bridge announced that it would be partnering up with the UH Texas Gulf Coast Small Business Development Center to launch a new, collaborative program that will help innovators and entrepreneurs develop a pitch or commercialization plan. And in March it received a $2.875 million grant from the U.S. Department of Housing and Urban Development. to establish The Deck Innovation & Coworking Center.

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Houston ranks No. 99 out of 100 on new report of greenest U.S. cities

Sustainability Slide

Houstonians may be feeling blue about a new ranking of the greenest cities in the U.S.

Among the country’s 100 largest cities based on population, Houston ranks 99th across 28 key indicators of “green” living in a new study from personal finance website WalletHub. The only city with a lower ranking is Glendale, Arizona. Last year, Houston landed at No. 98 on the WalletHub list.

“‘Green’ living means a choice to engage in cleaner, more sustainable habits in order to preserve the planet as much as possible,” WalletHub says.

Among the study’s ranking factors are the amount of greenhouse gas emissions per capita, the number of “smart energy” policies, and the presence of “green job” programs.

In the study, Houston received an overall score of 35.64 out of 100. WalletHub put its findings into four buckets, with Houston ranked 100th in the environment and transportation categories, 56th in the lifestyle and policy category, and 52nd in the energy sources category.

In the environment category, Houston has two big strikes against it. The metro area ranks among the 10 worst places for ozone pollution (No. 7) and year-round particle pollution (No. 8), according to the American Lung Association’s 2025 list of the most polluted cities.

In the WalletHub study, San Jose, California, earns the honor of being the country’s greenest city. It’s followed by Washington, D.C.; Oakland, California; Irvine, California; and San Francisco.

“There are plenty of things that individuals can do to adopt a green lifestyle, from recycling to sharing rides to installing solar panels on their homes,” WalletHub analyst Chip Lupo said in the report. “However, living in one of the greenest cities can make it even easier to care for the environment, due to sustainable laws and policies, access to locally grown produce, and infrastructure that allows residents to use vehicles less often. The greenest cities also are better for your health due to superior air and water quality.”

Greentown to add new Houston AI lab from latest Houston partner

AI partnership

Greentown Labs has partnered with Shoreless to launch an AI lab within its Houston climatetech incubator.

"Climatetech and energy startups are transforming industries, and AI is a critical tool in that journey," Lawson Gow, Greentown's Head of Houston, said in a news release. "We're excited to bring this new offering to our entrepreneurs and corporate partners to enhance the way they think about reducing costs and emissions across the value chain."

Shoreless, a Houston-based company that enables AI adoption for enterprise systems, will support startups developing solutions for supply-chain optimization and decarbonization. They will offer Greentown members climate sprint sessions that will deliver AI-driven insights to assist companies in reducing Scope 3 emissions, driving new revenue streams and lowering expenses. Additionally, the lab will help companies test their ideas before attempting to scale them globally.

"The future of climatetech is intertwined with the future of AI," Ken Myers, Founder and CEO of Shoreless, said in a news release."By launching this AI lab with Greentown Labs, we are creating a collaborative ecosystem where innovation can flourish. Our agentic AI is designed to help companies make a real difference, and we are excited to see the groundbreaking solutions that will emerge from this partnership."

Greentown and Shoreless will collaborate on workshops that address industry needs for technical teams, and Shoreless will also work to provide engagement opportunities and tailored workshops for Greentown’s startups and residents. Interested companies can inquire here.

Recently, Greentown Labs also partnered with Los Angeles-based software development firm Nominal to launch the new Industrial Center of Excellence at Greentown's Houston incubator. It also announced a partnership with Houston-based EnergyTech Nexus, which will also open an investor lounge on-site last month. Read more here.