Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affaires, Henan Agricultural University, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affaires, Henan Agricultural University, Zhengzhou 450002, China; Quasar Energy Group, 2705 Selby Rd., Wooster, OH 44691, United States.
Bioresour Technol. 2021 Feb;321:124467. doi: 10.1016/j.biortech.2020.124467. Epub 2020 Dec 1.
This study aimed to explore the correlation between hydrogen yield improvement of photo-fermentation of Arundo donax L. and glycerol addition. Different glycerol concentrations (g/L) (0, 10, 15, 20, and 30) were replenished to establish co-substrate system. And statistical analysis was introduced to evaluate the correlation. The maximum hydrogen yield improvement (294%) was obtained from glycerol addition of 15 g/L in comparison with mono-substrate system of Arundo donax L. Under the optimal glycerol addition (15 g/L), the glycerol/Arundo donax L. ratio, C/N ratio, initial medium redox potential (E), and solid/liquid ratio were 1:1, 25.1, 57 mV, and 1/68, respectively. In addition, canonical correlation analysis (CCA) indicated that initial and final medium redox potential (E) had the strongest relationship with yield improvement of photo-fermentation. Moreover, Pearson's correlation analysis claimed that Arundo donax L./glycerol ratio played a key role during the photo-fermentative hydrogen production (PFHP) process.
本研究旨在探讨添加甘油对芦竹光发酵产氢性能提升的相关性。建立共基质体系，分别补加不同浓度（g/L）甘油（0、10、15、20、30）。采用统计学分析评估相关性。与芦竹单基质体系相比，15 g/L 甘油添加可使最大产氢量提高 294%。在最优甘油添加量（15 g/L）下，甘油/芦竹比、C/N 比、初始介质氧化还原电位（E）和固液比分别为 1:1、25.1、57 mV 和 1/68。此外，典型相关分析（CCA）表明初始和最终介质氧化还原电位（E）与光发酵产氢性能提升具有最强的相关性。此外，Pearson 相关分析表明，在光发酵产氢（PFHP）过程中，芦竹/甘油比起着关键作用。
