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Press Release

Fuel Tech Releases White Paper Validating Oxygen Transfer Efficiency of Its Dissolved Gas Infusion Technology

Published by Todd Bush on October 27, 2022

Fuel Tech Releases White Paper Validating DGI™ Dissolved Gas Infusion Technology

WARRENVILLE, Ill., Oct. 26, 2022 - Fuel Tech, Inc. (NASDAQ: FTEK), a technology company providing advanced engineering solutions for the optimization of combustion systems, emissions control, and water treatment in utility and industrial applications, today released a white paper validating the oxygen transfer efficiency of its DGI™ Dissolved Gas Infusion technology. The paper, entitled 'Validation Testing of the Fuel Tech, Inc. Dissolved Gas Infusion Technology for Oxygen Transfer Efficiency in Clean Water,' is available at Fuel Tech's website at https://www.ftek.com, or directly via our DGI product page at https://www.dissolvedgasinfusion.com.

Fuel Tech's DGI technology was tested using modified validation methodologies published by the American Society of Civil Engineers (ASCE) and its Environmental & Waters Research Institute (EWRI), with the results being both peer-reviewed and endorsed by two industry experts. Through this testing, Fuel Tech determined:

  • 99+% of the oxygen supplied to the DGI system was delivered to the treatment reservoir as dissolved oxygen with no loss to the atmosphere, within described measurement uncertainties;

  • the DGI channel injector was completely effective in transferring the oxygen-infused water stream to the reservoir water while located only twenty-four inches below the water surface; and

  • there was no measurable loss of oxygen to the environment, no visible bubbles, and no delay in the availability of the supplied oxygen to react in the aqueous phase.

Fuel Tech's DGI technology is an innovative alternative to current aeration technologies. DGI utilizes two patent-pending technologies to ensure optimal gas delivery to target water and wastewater process applications: a next generation pressurized saturator for gas transfer to a slipstream of water; and an innovative delivery system to distribute an oxygenated slipstream of water that virtually eliminates gas loss from the targeted reservoir.

DGI addresses a variety of issues, including regulatory compliance, water preservation, as a replacement for chemicals to treat wastewater, odor reduction, and improving overall water quality for humans and wildlife. DGI's addressable markets include water and wastewater treatment, agriculture and irrigation, reservoirs and natural waters, industrial process water conditioning, pulp and paper, food and beverage facilities, upstream oil & gas, and landfill leachate.

Vincent J. Arnone, President and Chief Executive Officer, commented, "This validation study is a foundational component of our ongoing DGI business development strategy. We are continuing to evaluate our resource requirements to achieve our goal of product commercialization by year end 2022 and as noted on our recent conference call we have begun our search for an experienced water and wastewater treatment executive to assist in our efforts."

About Fuel Tech

Fuel Tech develops and commercializes state-of-the-art proprietary technologies for air pollution control, process optimization, water treatment, and advanced engineering services. These technologies enable customers to operate in a cost-effective and environmentally sustainable manner. Fuel Tech is a leader in nitrogen oxide (NOx) reduction and particulate control technologies and its solutions have been in installed on over 1,200 utility, industrial and municipal units worldwide. The Company's FUEL CHEM® technology improves the efficiency, reliability, fuel flexibility, boiler heat rate, and environmental status of combustion units by controlling slagging, fouling, corrosion and opacity. Water treatment technologies include DGI™ Dissolved Gas Infusion Systems which utilize a patented nozzle to deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues. This infusion process has a variety of applications in the water and wastewater industries, including remediation, aeration, biological treatment and wastewater odor management. Many of Fuel Tech's products and services rely heavily on the Company's exceptional Computational Fluid Dynamics modeling capabilities, which are enhanced by internally developed, high-end visualization software. For more information, visit Fuel Tech's web site at www.ftek.com.

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