基于水的SiO2纳米流体与基准MEA氨基溶液的CFD比较,用于通过多孔膜接触器捕获CO2
Hadil Faris Alotaibi1, Ahmed Mohsen2,3, Bhavesh Kanabar4
1Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint AbdulRahman University, Riyadh, 11671, Saudi Arabia. hfalotaibi@pnu.edu.sa.
Scientific reports
|April 17, 2025
概括
研究人员开发了一种基于SiO2的新型纳米流体用于二氧化碳 (CO2) 捕获,为传统的氨基溶液提供了一个环保的替代方案. 这种绿色吸收剂在减少温室气体排放方面显示了与膜接触器相比较的性能.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 温室气体排放,特别是二氧化碳 (CO2) 带来了重大环境风险,推动了对有效捕获技术的研究.
- 传统的二氧化碳捕获氨基基吸收剂存在诸如腐蚀,环境损害和操作复杂性等缺点.
- 纳米流体为分离过程提供了有前途的优势,包括高表面积,稳定性和与不同膜类型的多功能性.
研究的目的:
- 为了比较基于SiO2的新型纳米流体与基准单甲胺 (MEA) 溶液的二氧化碳捕获效率.
- 评估基于SiO2的纳米流体作为一种更绿色,更可持续的二氧化碳分离吸收剂的潜力.
- 研究膜和模块参数对气液膜接触器中二氧化碳捕获性能的影响.
主要方法:
- 利用计算流体动力学 (CFD) 方法来建模和分析二氧化碳分离过程.
- 在捕获实验中使用气液膜接触器 (MC) 系统.
- 在特定条件下,基于SiO2的纳米流体与单乙醇胺 (MEA) 的性能进行了比较.
主要成果:
- 基于SiO2的纳米流体的二氧化碳分离效率为98.8%,接近MEA溶液的99.5%.
- 该研究全面分析了膜/模块参数 (包括纤维数量,模块长度和气体速度) 对二氧化碳分离的影响.
- 结果表明,基于SiO2的纳米流体是一种可行的,环保的替代MEA用于二氧化碳捕获.
结论:
- 基于SiO2的纳米流体在二氧化碳捕获应用中为MEA提供了可比且环境优越的替代品.
- 开发的纳米流体解决了与传统氨酸吸收剂相关的环境和运行问题.
- 在膜接触器中进一步优化和应用纳米流体可以为更可持续的二氧化碳减排策略做出贡献.
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