2025/9/10

Toward an era of “capturing and utilizing” CO₂. IJTT and two other companies take on the challenge of generating carbon credits using carbon-absorbing concrete.

IJTT Co., Ltd., in collaboration with ByWill Co., Ltd. and Santa Mineral Co., Ltd., has launched a demonstration project aimed at generating carbon credits by directly capturing CO₂ from the atmosphere and sequestering it in concrete.
Spanning multiple industries, including manufacturing and construction, the company is striving to create a new business model that “turns CO₂ into a resource.”

The three companies that have signed a partnership agreement (ByWill, Santa Mineral, and IJTT)

From “reducing” CO₂ to “capturing and utilizing” it

The manufacturing sector, particularly the foundry industry, serves as a vital foundation supporting Japan’s economy, yet it is also a sector with high CO₂ emissions.
In recent years, as efforts toward decarbonization have progressed, “DAC (Direct Air Capture)”—a technology that directly captures CO₂ from the atmosphere—has garnered attention as a solution to supplement areas where emissions reduction alone is insufficient.
This initiative utilizes DAC technology to take a new approach: rather than simply reducing CO₂, it aims to “capture and utilize it as a resource.”

Japan's First Demonstration of “Continuous Operation” in the Field

A key feature of this demonstration project is that the equipment is operated continuously in real-world settings rather than in a laboratory.
Bywill Headquarters
IJTT Kitakami Plant (casting facility)
The equipment has been installed in these different environments to capture and sequester CO₂ as part of daily operations.
This type of demonstration marks the first initiative in Japan to utilize Santa Mineral’s technology.

“SUKUU,” a CO₂ absorption and sequestration system installed in offices and factories

Capturing CO₂ in concrete and creating value

The captured CO₂ is not simply released into the atmosphere but is instead sequestered in concrete.
Furthermore, this initiative will utilize the new methodology under the J-Credit system,
“IN-006: CO₂ Absorbing Concrete,”
and is scheduled to be converted into credits representing monetized environmental value.
Aiming to generate credits by 2026, this project is designed with a view toward making environmental value “visible” and facilitating its circulation.

An initiative that combines the strengths of the three companies

This project was made possible through the collaboration of three companies, each with distinct strengths.
IJTT: Provision of manufacturing site and development of CO₂ sequestration materials utilizing waste sand
ByWillGeneration of carbon credits and design of the business model
Santa Mineral: Development and improvement of the CO₂ absorption and sequestration device “SUKUU”

By bridging the distinct fields of manufacturing, technology, and finance (carbon credits), we aim to build a “cross-industry collaboration model” that goes beyond mere technological demonstration.

The Meaning and Potential Behind “SUKUU”

The name of the CO₂ absorption and sequestration device, “SUKUU,”is a play on Japanese words
encompassing three meanings:
― to scoop up
― to save (protect the environment)
― to absorb (CO₂)

This device features
low-energy CO₂ capture,
a compact, easy-to-install design,
and the ability to operate even in harsh environments such as factories.
As a result, it is expected to be deployed in a wide variety of locations.

Connecting Industries, Creating New Environmental Value

This initiative represents a challenge to transform CO₂ from a “pollutant” into a “valuable resource.”
Looking ahead, we are also considering:

-Expansion into sectors beyond concrete
-CO₂ sequestration in the ocean
-Global-scale deployment

This initiative, which begins on the factory floor, holds the potential to transform the structure of the entire industry.

Click here for the full press release

For more details on this matter,
please refer to this press release.