Preparation and Characteristics of Soda Lime for Carbon Dioxide Absorption

Young-Jin Kim; Seok-Je Kwon; Jun-Hyung Seo; Yang-Soo Kim; Kye-Hong Cho; Jin-Sang Cho

doi:10.7844/kirr.2023.32.2.52

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2023 Vol.32, Issue 2 Preview Page

Technical Research Paper

Preparation and Characteristics of Soda Lime for Carbon Dioxide Absorption 이산화탄소 흡수를 위한 소다라임 제조 및 특성

30 April 2023. pp. 52-58

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Abstract

In this study, soda lime was prepared from slaked lime to expand the scope of limestone use. To evaluate carbon dioxide absorption, an extruder-type and disc-type pelletizers were used to make the soda lime using bentonite as an additive. Regardless of the pelletizing process, the peak of CaCO₃ was confirmed in soda lime due to its reaction with carbon dioxide. Furthermore, it was confirmed that both calcite and aragonite were present together. The soda lime prepared using the disc-type pelletizer showed a larger specific surface area than that prepared using the extruder-type pelletizer did, and the specific surface area improved on adding bentonite. The carbon dioxide absorption rate increased under the sample condition with an enhanced specific surface area.

Keywords

Slaked lime

Soda lime

Carbon dioxide

Specific surface area

본 연구에서는 석회석 활용분야 확대를 위해 소석회를 이용한 소다라임 제조 기초 실험을 실시하였다. 소다라임 제조를 위해 압출식 방식과 디스크 방식의 펠렛타이져를 이용하였으며, 첨가제로 벤토나이트를 투입하여 제조한 소다라임의 이산화탄소 흡수 특성을 평가하였다. 실험결과, 제조 방식에 관계없이 이산화탄소와의 반응에 따라 소다라임에서 CaCO₃의 peak가 확인되었으며, 방해석과 아라고나이트가 함께 생성된 것을 확인하였다. 디스크 방식으로 제조한 소다라임이 압출방식에 비해 더 큰 비표면적을 나타내었고, 벤토나이트를 첨가한 조건에서도 비표면적이 향상되었다. 비표면적이 향상된 시료 조건에서 이산화탄소 흡수율이 증가되는 것으로 확인되었다.

키워드

소석회

소다라임

이산화탄소

비표면적

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 32
No :2
Pages :52-58
Received Date : 2023-03-14
Revised Date : 2023-03-22
Accepted Date : 2023-03-23
DOI :https://doi.org/10.7844/kirr.2023.32.2.52

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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