College of Engineering, Northeast Agriculture University, Harbin 150030, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China; Key Laboratory of Agricultural Renewable Resources Utilization Technology and Equipment in Cold Areas of Heilongjiang Province, Harbin 150030, PR China.
College of Engineering, Northeast Agriculture University, Harbin 150030, PR China; Key Laboratory of Agricultural Renewable Resources Utilization Technology and Equipment in Cold Areas of Heilongjiang Province, Harbin 150030, PR China.
Bioresour Technol. 2021 Jan;320(Pt A):124332. doi: 10.1016/j.biortech.2020.124332. Epub 2020 Oct 29.
Aerobic hydrolysis of stover before anaerobic digestion is beneficial to improve the biodegradability of corn stover. Aerobic hydrolysis of corn stover at 43 °C was conducted to investigate the effects of hydrolysis time (0 h, 8 h, 16 h, and 24 h) on the degradation of lignocellulose from corn stover and material conversion. Further anaerobic digestion and energy consumption analysis with the digestion temperature of 36 °C were carried out. The accumulation rate of volatile fatty acids began to slow down after 16 h of hydrolysis, and the concentration of acetic acid reached 221.85 mmol/L at 24 h of hydrolysis. The degradation rate of lignocellulose was obviously increased after hydrolysis. When the hydrolysis time was 16 h, it reached the maximum cumulative methane production with 268.75 ml/g VS. In terms of biogas production and energy conversion efficiency, it is more appropriate to choose 16 h as hydrolysis time in biogas engineering.
在进行厌氧消化之前对秸秆进行好氧水解有利于提高玉米秸秆的生物降解性。在 43°C 下进行玉米秸秆的好氧水解，以研究水解时间（0 h、8 h、16 h 和 24 h）对玉米秸秆中木质纤维素降解和物料转化的影响。进一步在 36°C 的消化温度下进行厌氧消化和能量消耗分析。水解 16 h 后，挥发性脂肪酸的积累率开始放缓，24 h 时水解液中乙酸浓度达到 221.85 mmol/L。水解后木质纤维素的降解率明显提高。当水解时间为 16 h 时，最大累积甲烷产率达到 268.75 ml/g VS。就沼气产量和能量转换效率而言，在沼气工程中选择 16 h 的水解时间更为合适。
