Abstract In times of energy revolution, bioelectrochemistry is a growing field of research, either for the generation of electrical energy from organic substrates or the use of electrical energy to produce various products. By now, this technology is on the turning point from lab scale to industrial applications. Unfortunately, there is still a lack of well characterized, scalable reactor systems that are capable of hosting different bioelectrochemical processes, linking lab scale research to industrial application. In this paper, we introduce a two-chamber bioelectrochemical bubble-column reactor (one liter working volume), which can be used as microbial fuel cell as well as for microbial electrosynthesis and is especially advantageous for processes with gaseous substrates. It is designed flexible in terms of electrode material and area, membrane material and area, and capable of hosting continuous processes. It is a promising replacement of lab-scale H-cells for wider screening possibilities with regard to industrial applications. We characterized the reactor by giving key values such as k L a and gas hold up, and suggest scale-up parameters. These are, for example, dimensionless numbers like Reynolds and Wagner number and different ratios that should be kept constant during scale-up. Therefore, this paper can be a guideline for the development and scale-up of bioelectrochemical systems.

中文翻译：

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将生物电化学过程从 H 细胞转移到可扩展的泡罩塔反应器

摘要 在能源革命时代，生物电化学是一个不断发展的研究领域，无论是从有机基质中产生电能，还是利用电能生产各种产品。到目前为止，这项技术正处于从实验室规模到工业应用的转折点。不幸的是，仍然缺乏能够承载不同生物电化学过程、将实验室规模研究与工业应用联系起来的良好表征、可扩展的反应器系统。在本文中，我们介绍了一种双室生物电化学泡罩反应器（一升工作体积），它既可以用作微生物燃料电池，也可以用于微生物电合成，特别有利于气体底物的工艺。它在电极材料和面积方面设计灵活，膜材料和面积，并能够承载连续过程。它是实验室规模 H 细胞的有前途的替代品，可在工业应用方面提供更广泛的筛选可能性。我们通过给出关键值（例如 k L a 和气体滞留率）来表征反应器，并建议放大参数。例如，这些是无量纲数，如雷诺数和瓦格纳数，以及在放大过程中应保持恒定的不同比率。因此，本文可以作为生物电化学系统开发和放大的指南。并建议放大参数。例如，这些是无量纲数，如雷诺数和瓦格纳数，以及在放大过程中应保持恒定的不同比率。因此，本文可以作为生物电化学系统开发和放大的指南。并建议放大参数。例如，这些是无量纲数，如雷诺数和瓦格纳数，以及在放大过程中应保持恒定的不同比率。因此，本文可以作为生物电化学系统开发和放大的指南。