Carbon Capture Potential in Waste Modified Soils: A Review

Amos Yala Iorliam; Alfred Wilson Opukumo; Benedict Anum

doi:10.52589/IJMCE-X4J0ETUU

Carbon Capture Potential in Waste Modified Soils: A Review | AB Journals

Carbon Capture Potential in Waste Modified Soils: A Review

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International Journal of Mechanical and Civil Engineering

Vol. 5Issue 12022pp. 25–38Published 23 August 2022

DOI 10.52589/IJMCE-X4J0ETUU

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Abstract:

Carbonation of lime modified soil could capture carbon dioxide (CO_2) alongside strength improvement for road pavement materials. Due to large amounts of 〖CO〗_2 emissions and increasing cost of primary soil stabilizers such as lime and cement, the use of lime-based wastes have been encouraged. This paper reviews waste materials based on separate potential for 〖CO〗_2 capture and strength improvement of soils. Such wastes include cement kiln dust (CKD), saw dust ash (SDA), steel slag, basic oxygen steel (BOS) slag, ground granulated blast furnace slag (GGBS), coal fly ash (CFA) and cattle bone powder (CBP). Based on separated considerations of 〖CO〗_2 capture and strength improvement, CKD, SDA, BOS and GGBS have shown to have both high 〖CO〗_2 capture and strength improvement potential for weak soil. Future laboratory studies on lime-based waste (such as CKD and SDA) treated soil for combined 〖CO〗_2 capture and strength improvement need to be conducted.

Keywords:Carbon dioxide capture Lime-based waste Strength improvement Weak soil.

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