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利用橄榄石衍生产品在低碳混凝土中进行碳捕获与封存。

Carbon capture and storage in low-carbon concrete using products derived from olivine.

作者信息

Shanks Barney, Howe Caitlin, Draper Sam, Wong Hong, Cheeseman Christopher

机构信息

Centre for Infrastructure Materials, Department of Civil and Environmental Engineering, Imperial College London, , London SW7 2AZ, UK.

出版信息

R Soc Open Sci. 2024 May 1;11(5):231645. doi: 10.1098/rsos.231645. eCollection 2024 May.

DOI:10.1098/rsos.231645
PMID:38699552
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11061639/
Abstract

A novel process is reported that produces amorphous silica and nesquehonite (MgCO·3HO) from the magnesium silicate mineral olivine ((Mg, Fe)·SiO). The amorphous silica forms a supplementary cementitious material for use in concrete. The formation of nesquehonite sequesters carbon making the overall process carbon negative. Nesquehonite can also be used to form low-carbon construction products such as bricks, blocks and boards. This article reports on key process optimization studies. The potential for amorphous precipitated silica derived from olivine to produce carbon-negative concrete is discussed.

摘要

据报道，一种新工艺可从硅酸镁矿物橄榄石（(Mg, Fe)₂SiO₄）中生产无定形二氧化硅和三水碳酸镁（MgCO₃·3H₂O）。无定形二氧化硅形成一种用于混凝土的辅助胶凝材料。三水碳酸镁的形成可封存碳，使整个过程成为负碳过程。三水碳酸镁还可用于制造低碳建筑产品，如砖、砌块和板材。本文报道了关键的工艺优化研究。讨论了由橄榄石衍生的无定形沉淀二氧化硅生产负碳混凝土的潜力。

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本文引用的文献

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