Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, Henan Agricultural University, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, Henan Agricultural University, Zhengzhou 450002, China.
Bioresour Technol. 2021 Jun;329:124878. doi: 10.1016/j.biortech.2021.124878. Epub 2021 Feb 23.
This study proposed a strategy to maximize the hydrogen yield by reusing feedstock of Arundo donax L. For this purpose, a successive 4-batch photo-fermentative hydrogen production (PFHP) was carried out to test the strategy. About 50% of total hydrogen yield was additionally obtained by reusing the Arundo donax L for successive 4 times in comparison to single 1st batch (161.4 mL/U. cell dry weight). In addition to the highest hydrogen yield, the maximum hydrogen production rate (6.0 mL/U. cell dry weight /h), and the highest volatile fatty acids (VFAs) concentration (32 mM) were also obtained from the 1st batch, while the 2nd batch gave the maximum substrate conversion efficiency (96.5%). Moreover, a positive relationship between the sum of acetic and butyric acids with hydrogen yields was observed. This strategy would help in enhancing hydrogen yield that coupled with cost reduction for biohydrogen production.
本研究提出了一种通过再利用芦竹原料来最大化氢气产量的策略。为此，进行了连续 4 批的光发酵制氢（PFHP）实验来测试该策略。与单批 1 次（161.4 mL/U. 细胞干重）相比，通过连续 4 次再利用芦竹，额外获得了约 50%的总氢气产量。除了最高的氢气产量外，该策略还在第 1 批中获得了最高的氢气产率（6.0 mL/U. 细胞干重/h）和最高的挥发性脂肪酸（VFAs）浓度（32 mM），而第 2 批则获得了最高的底物转化率（96.5%）。此外，还观察到乙酸和丁酸的总和与氢气产量之间存在正相关关系。该策略有助于提高氢气产量，并降低生物制氢成本。
