Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, China.
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Bioresour Technol. 2023 Oct;385:129378. doi: 10.1016/j.biortech.2023.129378. Epub 2023 Jun 21.
The triggering effects of nickel ferrite (NiFeO) photo nanocatalysts on photo fermentative hydrogen production (PFHP), and metabolic pathways under various excitation sources (incandescent lamp, Xenon lamp, and 532 laser) have been investigated. Compare to the control group (CG) highest cumulative hydrogen volume (CHV) and the maximum hydrogen production rate (HPR) of 568.8 mL and 9.17 mL/h, respectively were achieved at a loading centration of 150 mg/L excited with an incandescent lamp. The change in metabolites with NiFeO incorporation suggests that bacterial activity is significantly affected by photo nanocatalysts. Triggering of NiFeO by laser excitation showed the highest HPR of 7.83 mL /h within 24 h, which greatly reduces the lag time. The microbial community investigation showed that the addition of NiFeO photo nanocatalysts and the change of light source effectively improved the microbial community structure and increased the abundance of hydrogen-producing bacteria (HPB) which leads to enhanced hydrogen production.
镍铁氧体（NiFeO）光纳米催化剂对光发酵产氢（PFHP）的触发效应，以及在各种激发源（白炽灯、氙灯和 532 激光）下的代谢途径已经过研究。与对照组（CG）相比，在 150mg/L 的负载浓度下，用白炽灯激发时，最大累积产氢量（CHV）和最大产氢速率（HPR）分别达到 568.8 mL 和 9.17 mL/h。NiFeO 的加入引起的代谢物变化表明，细菌活性受到光纳米催化剂的显著影响。激光激发触发 NiFeO 在 24 小时内表现出最高的 7.83 mL/h 的 HPR，大大缩短了滞后时间。微生物群落调查显示，添加 NiFeO 光纳米催化剂和改变光源有效改善了微生物群落结构，增加了产氢菌（HPB）的丰度，从而提高了产氢量。
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