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大气中的二氧化碳在海水中的封存,由类贝粉末增强

Yuto Namikawa¹, Michio Suzuki¹

¹Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

Environmental science & technology

|January 22, 2024

概括

贝粉可以在海水中将大气中的二氧化碳 (CO2) 转化为碳酸 (CaCO3). 萨克西多莫斯·普普拉塔 (Saxidomus purpurata) 贝粉显示出最高的效率,提供了一个具有成本效益的气候变化缓解策略.

科学领域:

环境科学环境科学
地质化学地质化学
材料科学材料科学材料科学

背景情况:

碳捕获,利用和储存 (CCUS) 对减缓气候变化至关重要.
二氧化碳矿化是有效的,但在低度大气二氧化碳的情况下具有挑战性.
海水生物矿化利用有机物质进行碳酸 (CaCO3) 沉.

研究的目的:

通过使用海洋贝粉末,研究大气中的二氧化碳转化为CaCO3.
为了确定有效的贝物种来增强二氧化碳矿化.
评估有机物在贝辅助二氧化碳矿化中的作用.

主要方法:

测试六种类型的海洋贝粉末 (Pinctada fucata,Haliotis discus,Crassostrea gigas,Mizuhopecten yessoensis,Turbo sazae,Saxidomus purpurata) 在海水中的二氧化碳矿化.
分析CaCO3的形成和回收率.
进行NaClO处理,以评估有机物质的影响.

主要成果:

萨克西多莫斯·普尔普拉塔 (Saxidomus purpurata) 贝粉呈现出最高的CaCO3形成和回收率.
贝中存在的有机物质显著增强了CO2矿化.
所有经过测试的材料 (大气中的CO2,海水,贝) 对于大规模部署来说都是经济可行的.

结论:

海粉末,特别是Saxidomus purpurata,为海水中的大气二氧化碳矿化提供了一个有希望的,具有成本效益的方法.
贝内的有机成分在促进这一过程中发挥着至关重要的作用.
这种方法为缓解气候变化带来了创新的技术进步.

关键词:

在CCUS中,您可以使用CCUS.二氧化碳二氧化碳二氧化碳在CaCO3CO3中.经济技术技术经济技术矿物化的矿化.这是海水,海水.贝粉是什么?贝粉是什么?贝粉是什么?贝粉是什么?

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