Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China.
Bioresour Technol. 2020 Sep;312:123570. doi: 10.1016/j.biortech.2020.123570. Epub 2020 May 23.
To better clarify the effect of lighting and mixing on the hydrogen production from agricultural waste, experiments under diverse constant and dynamic light intensities and mixing speeds were conducted. Cumulative hydrogen yield, hydrogen production rate, OD, pH, reducing sugar concentration were monitored. Results showed that mixing had positive effects on high substrate concentration. The interaction between lighting and mixing was drawn. Higher light intensity (7000 Lux) was suitable for hydrogen production under mixing. Higher light intensity with higher mixing speed (150 RPM) showed the highest cumulative hydrogen yield of 78.1 mL/g TS. Different periods of hydrogen production process required distinct lighting and mixing. Combined with Gompertz model, dynamic lighting and mixing strategies were discussed. Dynamic light intensity (4000-7000-4000 Lux) accompanied with dynamic mixing speed (50-150-50 RPM) was the optimal condition for PFHP. Highest hydrogen yield of 84.7 mL/g TS and highest light conversion efficiency of 36.32% were obtained.
为了更好地阐明光照和混合对农业废弃物产氢的影响，在不同的恒定和动态光照强度和混合速度下进行了实验。监测了累积产氢量、产氢率、OD、pH 值、还原糖浓度。结果表明，混合对高底物浓度有积极影响。得出了光照和混合之间的相互作用。较高的光强（7000Lux）适合在混合条件下产氢。较高的光强和较高的混合速度（150RPM）显示出最高的累积产氢量为 78.1mL/gTS。不同的产氢阶段需要不同的光照和混合。结合 Gompertz 模型，讨论了动态光照和混合策略。动态光强（4000-7000-4000Lux）伴随着动态混合速度（50-150-50RPM）是 PFHP 的最佳条件。获得了 84.7mL/gTS 的最高产氢量和 36.32%的最高光转化率。
