Key Laboratory of New Materials and Facilities for Rural Renewable Energy, MOA of China, Henan Agricultural University, Zhengzhou 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy, MOA of China, Henan Agricultural University, Zhengzhou 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou 450002, China.
Bioresour Technol. 2021 Mar;324:124680. doi: 10.1016/j.biortech.2021.124680. Epub 2021 Jan 8.
The aim of this work was to study the characteristics, kinetics and electronic distribution of photo-fermentation hydrogen production (PFHP) with Zn addition then gave the main results that the addition of Zn can effectively improve hydrogen production with an increasing of 1-5 mg/L Zn concentration. The maximum hydrogen yield of 592 ± 13 mL and shortest lag time of 4.67 h were obtained at 2 mg/L Zn. 26.42% of the substrate energy was diverted to H. Modified Gompertz and Hane-Levenspiel models were applied to evaluate the effect of Zn on PFHP by mixed bacteria HAU-M1, the constants n and m obtained by fitting models were 14.97 and 58.79, respectively, indicating the fermentation system was noncompetitive inhibition, the predicted critical Zn concentration was 40.83 mg/L.
本工作旨在研究 Zn 添加剂对光发酵产氢（PFHP）的特性、动力学和电子分布的影响，并给出了主要结果，即添加 Zn 可以有效提高产氢量，当 Zn 浓度增加 1-5mg/L 时，产氢量增加。在 2mg/L Zn 时，获得了最大产氢量 592±13mL 和最短的迟滞时间 4.67h。Zn 的添加将底物能量的 26.42%转移到 H 上。采用修正的 Gompertz 和 Hane-Levenspiel 模型来评估 Zn 对混合菌 HAU-M1 光发酵产氢的影响，通过拟合模型得到的常数 n 和 m 分别为 14.97 和 58.79，表明发酵体系是非竞争性抑制，预测的临界 Zn 浓度为 40.83mg/L。
