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Pilot composite tubular bioreactor for outdoor photo-fermentation hydrogen production: From batch to continuous operation
Bioresource Technology ( IF 9.7 ) Pub Date : 2024-04-15 , DOI: 10.1016/j.biortech.2024.130705 Changpeng Ren 1 , Sihu Zhang 1 , Qing Li 1 , Qiushi Jiang 1 , Yongbing Li 1 , Zixuan Gao 1 , Wen Cao 1 , Liejin Guo 1
Bioresource Technology ( IF 9.7 ) Pub Date : 2024-04-15 , DOI: 10.1016/j.biortech.2024.130705 Changpeng Ren 1 , Sihu Zhang 1 , Qing Li 1 , Qiushi Jiang 1 , Yongbing Li 1 , Zixuan Gao 1 , Wen Cao 1 , Liejin Guo 1
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A novel 70 L composite tubular photo-bioreactor was constructed, and its photo-fermentation hydrogen production characteristics of batch and continuous modes were investigated with glucose as the substrate in an outdoor environment. In the batch fermentation stage, the hydrogen production rate peaked at 37.6 mL H/(L·h) accompanied by a high hydrogen yield of 7 mol H/mol glucose. The daytime light conversion efficiency is 4 %, with 37 % of light energy from the sun. An optimal hydraulic retention time of 5 d was identified during continuous photo-fermentation. Under this condition, the stability of the cell concentration is maintained and more electrons can be driven to the hydrogen generation pathway while attaining a hydrogen production rate of 20.7 ± 0.9 mL H/(L·h). The changes of biomass, volatile fatty acids concentration and ion concentration during fermentation were analyzed. Continuous hydrogen production by composite tubular photo-bioreactor offers new ideas for the large-scale deployment of photobiological hydrogen production.
中文翻译：
用于室外光发酵制氢的中试复合管式生物反应器：从间歇操作到连续操作
构建了一种新型70 L复合管式光生物反应器，并在室外环境下研究了其以葡萄糖为底物的间歇式和连续式光发酵产氢特性。在分批发酵阶段，氢气产率峰值为37.6 mL H/(L·h)，同时氢气产率为7 mol H/mol葡萄糖。白天光转换效率为4%，其中37%的光能来自太阳。在连续光发酵过程中确定了 5 天的最佳水力保留时间。在此条件下，细胞浓度保持稳定，更多的电子可以被驱动到产氢途径，同时获得20.7±0.9 mL H/(L·h)的产氢速率。分析发酵过程中生物量、挥发性脂肪酸浓度和离子浓度的变化。复合管式光生物反应器连续制氢为光生物制氢的大规模部署提供了新思路。
更新日期：2024-04-15
中文翻译：
用于室外光发酵制氢的中试复合管式生物反应器：从间歇操作到连续操作
构建了一种新型70 L复合管式光生物反应器，并在室外环境下研究了其以葡萄糖为底物的间歇式和连续式光发酵产氢特性。在分批发酵阶段，氢气产率峰值为37.6 mL H/(L·h)，同时氢气产率为7 mol H/mol葡萄糖。白天光转换效率为4%，其中37%的光能来自太阳。在连续光发酵过程中确定了 5 天的最佳水力保留时间。在此条件下，细胞浓度保持稳定，更多的电子可以被驱动到产氢途径，同时获得20.7±0.9 mL H/(L·h)的产氢速率。分析发酵过程中生物量、挥发性脂肪酸浓度和离子浓度的变化。复合管式光生物反应器连续制氢为光生物制氢的大规模部署提供了新思路。
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