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H2 production by photofermentation in an innovative plate‐type photobioreactor with meandering channels
Biotechnology and Bioengineering ( IF 3.5 ) Pub Date : 2020-12-15 , DOI: 10.1002/bit.27656
Violette Turon 1 , Stéphane Ollivier 1 , Gregory Cwicklinski 1 , John C Willison 2 , Zoé Anxionnaz-Minvielle 1
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Hydrogen production by Rhodobacter capsulatus is an anaerobic, photobiological process requiring specific mixing conditions. In this study, an innovative design of a photobioreactor is proposed. The design is based on a plate‐type photobioreactor with an interconnected meandering channel to allow culture mixing and H2 degassing. The culture flow was characterized as a quasi‐plug‐flow with radial mixing caused by a turbulent‐like regime achieved at a low Reynolds number. The dissipated volumetric power was decreased 10‐fold while maintaining PBR performances (production and yields) when compared with a magnetically stirred tank reactor. To increase hydrogen production flow rate, several bacterial concentrations were tested by increasing the glutamate concentration using fed‐batch cultures. The maximum hydrogen production flow rate (157.7 ± 9.3 ml H2/L/h) achieved is one of the highest values so far reported for H2 production by R. capsulatus. These first results are encouraging for future scale‐up of the plate‐type reactor.

中文翻译:

在具有曲折通道的创新板式光生物反应器中通过光发酵生产氢气

荚膜红杆菌产氢是一种厌氧光生物学过程,需要特定的混合条件。在这项研究中,提出了一种光生物反应器的创新设计。该设计基于板式光生物反应器,具有相互连接的曲折通道,以允许培养物混合和 H 2脱气。培养流被表征为具有径向混合的准活塞流,由在低雷诺数下实现的类湍流状态引起。与磁力搅拌釜式反应器相比,耗散的体积功率降低了 10 倍,同时保持了 PBR 性能(产量和产量)。为了提高产氢流速,通过使用分批补料培养增加谷氨酸浓度来测试几种细菌浓度。达到的最大氢气生产流速(157.7 ± 9.3 ml H 2 /L/h)是迄今为止报道的R. capsulatus生产H 2的最高值之​​一。这些初步结果对于板式反应器的未来放大是令人鼓舞的。
更新日期:2021-02-18
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