Performance enhancement of hollow fiber membrane contactors for CO2 absorption using MEA-based functionalized nanofluids

IF 2.3 4区工程技术 Q2 INSTRUMENTS & INSTRUMENTATION Microfluidics and Nanofluidics Pub Date : 2024-08-23 DOI:10.1007/s10404-024-02760-w

Miad Ahmari, Seyed Mojtaba Mirfendereski

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Abstract

The performance of hollow fiber membrane contactor for CO₂ removal using MEA-based nanofluid was experimentally evaluated. Different types of nanoparticles, including Al₂O₃, Fe₃O₄, and functionalized MWCNT in this study. The influence of various operating conditions including gas and absorbent flow rates, absorbent concentration, and nanofluid characteristics on separation performance was thoroughly examined. The results showed that compared to conventional amine solvents, the nanofluid absorbents significantly enhance CO₂ absorption performance. In comparison to the base fluid, the mass transfer coefficient was raised by 320, 120, and 40% for 0.15 wt% MWCNT, Al₂O₃ and Fe₂O₃, respectively. The MWCNT showed much more compliance with amine solvents due to its carboxyl functional groups and higher surface area which make it more stable in a strong polar mixture. The study underscores the importance of stability, viscosity, and shear stress of nanofluids as key parameters affecting CO₂ absorption performance.

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利用基于 MEA 的功能化纳米流体提高中空纤维膜接触器吸收二氧化碳的性能

实验评估了利用基于 MEA 的纳米流体去除二氧化碳的中空纤维膜接触器的性能。本研究采用了不同类型的纳米颗粒，包括 Al2O3、Fe3O4 和功能化 MWCNT。研究深入考察了各种操作条件（包括气体和吸收剂流速、吸收剂浓度和纳米流体特性）对分离性能的影响。结果表明，与传统胺溶剂相比，纳米流体吸收剂能显著提高二氧化碳吸收性能。与基础流体相比，0.15 wt% 的 MWCNT、Al2O3 和 Fe2O3 的传质系数分别提高了 320%、120% 和 40%。由于 MWCNT 具有羧基官能团和较高的比表面积，使其在强极性混合物中更加稳定，因此在胺溶剂中表现出更高的顺应性。该研究强调了纳米流体的稳定性、粘度和剪切应力作为影响二氧化碳吸收性能的关键参数的重要性。

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来源期刊

Microfluidics and Nanofluidics 工程技术-纳米科技

CiteScore

4.80

自引率

3.60%

发文量

审稿时长

2 months

期刊介绍： Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include: 1.000 Fundamental principles of micro- and nanoscale phenomena like, flow, mass transport and reactions 3.000 Theoretical models and numerical simulation with experimental and/or analytical proof 4.000 Novel measurement & characterization technologies 5.000 Devices (actuators and sensors) 6.000 New unit-operations for dedicated microfluidic platforms 7.000 Lab-on-a-Chip applications 8.000 Microfabrication technologies and materials Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).