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Home NEWS Science News Chemistry

Chung-Ang University researchers use carbon capture and utilization technology to recycle industrial carbon dioxide

Bioengineer by Bioengineer
September 14, 2023
in Chemistry
Reading Time: 5 mins read
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Climate change is a serious concern that needs to be prioritized globally. Nations across the globe are drafting policies to reduce the impact of global warming and climate change. For instance, the European Union has recommended a comprehensive set of guidelines to achieve climate neutrality by 2050. Likewise, the European Green Deal puts heavy emphasis on reducing greenhouse gas emissions.

Fighting climate change needs urgent global prioritization.

Credit: Public Domain Photos from Openverse
https://openverse.org/image/60ed779d-0afa-4564-a979-a448f167db81?q=chimney

Climate change is a serious concern that needs to be prioritized globally. Nations across the globe are drafting policies to reduce the impact of global warming and climate change. For instance, the European Union has recommended a comprehensive set of guidelines to achieve climate neutrality by 2050. Likewise, the European Green Deal puts heavy emphasis on reducing greenhouse gas emissions.

The capture of emitted carbon dioxide (CO2) and its chemical conversion into useful commercial products is one way to limit global warming and mitigate its effects. Scientists are now looking into carbon capture and utilization (CCU) technology as a promising approach to expanding CO2 storage and conversion at a low cost. Global CCU research, however, is largely limited to only about 20 conversion compounds. Given the variety of CO2 emission sources, it is critical to have a wider range of chemical compounds, which necessitates delving deeper into processes that can convert CO2 even at low concentrations.

A team of researchers from Chung-Ang University in Korea are conducting research on CCU processes that use waste materials or abundant natural resources as raw materials to ensure their economic feasibility. The team, led by Professor Sungho Yoon and Associate Professor Chul-Jin Lee, recently published a study where they discuss the utilization of industrial CO2 and dolomite—a common and abundant sedimentary rock that is a rich source of calcium and magnesium—for the production of two commercially viable products: calcium formate and magnesium oxide. The study was made available online on May 22, 2023 and was published in Volume 469 of the Chemical Engineering Journal on August 1, 2023.

“There is a growing interest in utilizing CO2 to produce valuable products that can help mitigate climate change while creating economic benefits. By combining CO2 hydrogenation and cation exchange reaction, a process for simultaneous metal oxide purification and high-value formate production has been developed,” remarks Prof. Yoon.

In their study, the researchers used a catalyst (Ru/bpyTN-30-CTF) to add hydrogen to CO2, which resulted in the production of two value-added products, calcium formate and magnesium oxide. Calcium formate, a cement additive, de-icing agent, and animal feed additive, is also used in leather tanning. Magnesium oxide, in contrast, is extensively used in the construction and pharmaceutical industries. The process was not only viable but also extremely rapid, yielding the products in just 5 minutes at room temperature. Moreover, the researchers estimated that this process could reduce global warming potential by 20% when compared to traditional calcium formate production methods.

The team also evaluated if their method could potentially replace the current production approaches by checking its environmental impact and economic feasibility. “Based on the results, we can say that our method offers an eco-friendly CO2 conversion alternative that could replace the conventional approaches, potentially contributing to the reduction of industrial CO2 emissions,” Prof. Yoon explains.

Although converting CO2 into meaningful products sounds promising, these processes are not always easy to scale up. Most of the CCU technologies have not been commercialized owing to their low economic feasibility compared to the prevailing commercial processes. “We need to combine CCU processes with waste material recycling to make them both environmentally and economically beneficial. This may contribute to achieving a net-zero emissions goal in the future,” concludes a hopeful Dr. Lee.

***

Reference

DOI: https://doi.org/10.1016/j.cej.2023.143684

Authors: Hayoung Yoona, Taeksang Yoonb, Chul-Jin Leeb,c, Sungho Yoona

Affiliations:

aDepartment of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea

bSchool of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea

cDepartment of Intelligent Energy and Industry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea

 

About Chung-Ang University

Chung-Ang University is a private comprehensive research university located in Seoul, South Korea. It was started as a kindergarten in 1916 and attained university status in 1953. It is fully accredited by the Ministry of Education of Korea. Chung-Ang University conducts research activities under the slogan of “Justice and Truth.” Its new vision for completing 100 years is “The Global Creative Leader.” Chung-Ang University offers undergraduate, postgraduate, and doctoral programs, which encompass a law school, management program, and medical school; it has 16 undergraduate and graduate schools each. Chung-Ang University’s culture and arts programs are considered the best in Korea.

Website: https://neweng.cau.ac.kr/index.do

 

About Professor Sungho Yoon

Sungho Yoon is a Professor in the Department of Chemistry at Chung-Ang University. His group is researching inorganic catalysts for reactions like hydrogenation and carbonylation, aiming to create diverse spin-off applications with significant societal benefits.

Read more about Prof. Yoon here: https://scholarworks.bwise.kr/cau/researcher-profile?ep=1238

 

About Associate Professor Chul-Jin Lee

Chul-Jin Lee is an Associate Professor of Chemical Engineering and Materials Science at Chung-Ang University. His group is actively involved in sustainable process design, optimization, and the application of machine learning to process systems.

Read more about Prof. Lee here: https://scholarworks.bwise.kr/cau/researcher-profile?ep=993



Journal

Chemical Engineering Journal

DOI

10.1016/j.cej.2023.143684

Method of Research

Experimental study

Subject of Research

Not applicable

Article Title

Kinetic conversion of magnesium and calcium ions of dolomite into useful value-added products using CO2

Article Publication Date

1-Aug-2023

COI Statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper

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