基于石灰的矿物碳化反应和CO2封存的特征的实验研究
1Department of Civil and Environmental Engineering, University of Maine, Orono, ME, USA. zeki.karaca@maine.edu.
Environmental science and pollution research international
|October 24, 2023
概括
这项研究引入了一种新的流量计技术,用于测量在土壤稳定中通过矿物质碳化对二氧化碳的封存. 观察到最优的二氧化碳捕获率为5%的非精细土壤中的石灰和1%的精细土壤中的石灰.
科学领域:
- 地质技术工程 地质技术工程
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 土壤稳定对于基础设施发展至关重要.
- 矿物碳化为二氧化碳 (CO2) 封存提供了一条途径.
- 在土壤稳定中对二氧化碳捕获的特征需要精确的测量技术.
研究的目的:
- 报告流量计在土壤稳定中的新型应用,用于描述矿物质碳化和二氧化碳封存.
- 调查石灰含量和土壤罚款对二氧化碳捕获效率的影响.
- 确定最佳的含水量,以最大限度地提高二氧化碳的捕获和效率.
主要方法:
- 利用一种新的流量计技术,在矿物质碳化过程中监测二氧化碳流量,总体体积,温度和压力.
- 测试的SiO2基土壤具有不同的颗粒大小和 (Ca(OH) 2) 度 (1-5%).
- 分析的二氧化碳捕获基于石灰含量,细含量和含水量 (重量6-7%).
主要成果:
- 矿物碳化反应在几秒钟内开始,在5分钟内结束,表明短期的,不依赖时间的过程.
- 最高的二氧化碳捕获率是5%的石灰在没有细菌的土壤中.
- 在含有细的土壤中,1%的石灰导致的二氧化碳捕获率高于5%的石灰.
- 最佳的二氧化碳捕获和效率是在6-7%重量的含水量下观察到的.
结论:
- 新的流量计技术有效地描述了矿物质碳化和二氧化碳封存在土壤稳定中的特点.
- 石灰含量和土壤细显著影响二氧化碳捕获效率.
- 在土壤碳化研究中,建议含有1-5%的石灰和6-7%的水分.
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