Ohio State University Develops New Process for Green Hydrogen Production with Negative Emissions from CO2 and Industrial Waste

August 17, 2026

Ohio State News USA

Overview

Chemists at Ohio State University have developed a novel process to convert carbon dioxide (CO2) and industrial byproducts like steel slag and coal ash into green hydrogen, enabling negative emissions. This innovative method pioneers a more efficient way to produce clean fuel while transforming waste into valuable mineral products. The process is reported to reduce the energy required for water electrolysis and facilitate hydrogen production with negative emissions using widely available grid power.

In Depth

Key Findings

A team of chemical researchers at Ohio State University has developed a new process for generating green hydrogen with negative emissions, utilizing carbon dioxide (CO2) and industrial byproducts such as steel slag and coal ash. This groundbreaking technology holds the potential to simultaneously advance waste management and clean energy production.

Technical Details

This novel process leverages reactions between CO2 and specific metal oxides present in industrial waste to produce hydrogen. Compared to conventional water electrolysis, the energy input required is reduced, allowing for efficient operation even with systems connected to existing power grids. Particularly noteworthy is the potential for this process to achieve ‘negative emissions’ by consuming CO2 and utilizing waste. Specifically, by using CO2 as a feedstock for hydrogen production and simultaneously converting industrial byproducts into valuable mineral products, the process reduces environmental impact while creating economic added value. While specific efficiency or production volumes are not detailed, the reduction in energy required for water electrolysis directly translates to lower hydrogen production costs.

Background & Context

Global industries face the dual challenges of reducing CO2 emissions and managing waste. Green hydrogen is a critical component of decarbonization, but its production typically requires clean electricity. Ohio State University’s achievement offers a new, more sustainable pathway for hydrogen production by utilizing CO2 and industrial waste as raw materials. This could be a revolutionary solution, particularly for industries that emit large quantities of CO2 and slag, such as steel manufacturing and thermal power plants, enabling them to simultaneously reduce waste and environmental impact.

Strategic Significance & Outlook

This hydrogen production process with negative emissions holds significant potential to contribute to climate change mitigation and the establishment of a circular economy. The ability to reduce water electrolysis energy costs and leverage widely available grid power could accelerate the technology’s adoption. The research team is expected to further optimize and scale up this process, as well as conduct demonstrations for commercialization. In the future, hydrogen production from industrial byproducts may play a crucial role in the global energy mix.

Source: https://news.osu.edu/chemists-race-to-turn-industrial-waste-into-renewable-resource/

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