Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary.
Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary.
Bioresour Technol. 2020 Apr;302:122828. doi: 10.1016/j.biortech.2020.122828. Epub 2020 Jan 21.
Biohydrogen production via dark fermentation is currently the most developed method considering its practical readiness for scale-up. However, technological issues to be resolved are still identifiable and should be of concern, particularly in terms of internal mass transfer. If sufficient liquid-to-gas H mass transfer rates are not ensured, serious problems associated with the recovery of biohydrogen and consequent inhibition of the process can occur. Therefore, the continuous and effective removal of H gas is required, which can be performed using gas separation membranes. In this review, we aim to analyze the literature experiences and knowledge regarding mass transfer enhancement approaches and show how membranes may contribute to this task by simultaneously processing the internal (headspace) gas, consisting mainly of H and CO. Promising strategies related to biogas recirculation and integrated schemes using membranes will be presented and discussed to detect potential future research directions for improving biohydrogen technology.
生物氢气通过暗发酵生产是目前最发达的方法，因为它在规模化方面具有实际可行性。然而，仍存在需要解决的技术问题，特别是在内部传质方面。如果不能确保足够的液-气氢传质速率，就会出现与生物氢气回收相关的严重问题，从而对工艺产生抑制。因此，需要连续有效地去除 H 气体，这可以使用气体分离膜来完成。在本综述中，我们旨在分析关于传质增强方法的文献经验和知识，并展示膜如何通过同时处理主要由 H 和 CO 组成的内部（顶部空间）气体来为此任务做出贡献。将介绍和讨论与沼气再循环相关的有前途的策略和使用膜的综合方案，以发现改善生物制氢技术的潜在未来研究方向。
