单乙醇胺基深共晶溶剂对生物氢中二氧化碳的溶解和分离

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-09-12 DOI:10.1002/jctb.70059

Xiaokai Zhou, Yanyan Jing, Cunjie Li, Quanguo Zhang, Yameng Li, Tian Zhang, Kai Zhang

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引用次数: 0

摘要

生物氢中二氧化碳的存在降低了氢的纯度，从而限制了其在燃料电池、富氢水和其他先进能源领域的应用。为了提高生物氢的纯度，研究了纯CO2在不同摩尔比、温度和水深共晶溶剂（DESs）浓度下的溶解度，并进行了响应面优化实验。随后，利用水相DESs研究了不同温度和不同氢流量下生物氢的脱碳和纯化。结果由乙酰胺和单乙醇胺（A-MEA）组成的DESs在65℃下具有良好的CO2溶解度。加入水后，A-MEA的粘度明显降低，流动性提高。值得注意的是，A-MEA的最佳CO2溶解温度降至40℃。当生物氢以100 mL min - 1的流速通过40%的a - mea时，纯化效果最佳。在此条件下，氢的纯度从60.00%提高到99.00%以上，并持续21 min。同时，该溶剂的CO2溶出量达到0.311 g CO2 g−1 A-MEA。结论A-MEA是一种高效的CO2吸收剂，为推进生物氢净化提供了重要见解，为其未来的工业规模应用奠定了基础。©2025化学工业学会（SCI）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Dissolution and separation of carbon dioxide in biohydrogen by monoethanolamine-based deep eutectic solvents

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Dissolution and separation of carbon dioxide in biohydrogen by monoethanolamine-based deep eutectic solvents

Background

The presence of CO₂ in biohydrogen reduces hydrogen purity, thereby limiting its application in fuel cells, hydrogen-enriched water and other advanced energy sectors. To improve biohydrogen purity, the solubility of pure CO₂ under different molar ratios, temperatures and aqueous deep eutectic solvents (DESs) concentrations were studied, and a response surface optimization experiment was carried out. Subsequently, aqueous DESs were utilized to investigate the decarbonization and purification of biohydrogen at varying temperatures and biohydrogen flow rates.

Results

The results demonstrated that the DESs composed of acetamide and monoethanolamine (A-MEA) exhibited effective CO₂ solubility properties at 65 °C. Upon the addition of water, the viscosity of A-MEA was significantly reduced, improving its fluidity. Notably, the optimum CO₂ dissolution temperature of aqueous A-MEA decreased to 40 °C. Optimal purification performance was achieved when biohydrogen was passed through 40% aqueous A-MEA at a flow rate of 100 mL min⁻¹. Under these conditions, hydrogen purity increased from 60.00% to over 99.00% and was sustained for 21 min. Simultaneously, the CO₂-dissolving capacity of the solvent reached 0.311 g CO₂ g⁻¹ A-MEA.

Conclusion

Aqueous A-MEA is an efficient CO₂ absorbent that provides important insights for advancing biohydrogen purification and laying the foundation for its future industrial-scale application. © 2025 Society of Chemical Industry (SCI).

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.