Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs of China, Henan Agricultural University, Zhengzhou 450002, PR China.
Changzhou University, Changzhou 213164, PR China.
Bioresour Technol. 2023 Jun;377:128904. doi: 10.1016/j.biortech.2023.128904. Epub 2023 Mar 16.
Combined pretreatment methods were assumed to further enhance photo-fermentative biohydrogen production (PFHP) from lignocellulosic biomass. For this purpose, an ultrasonication assisted ionic liquid pretreatment was applied to Arundo donax L. biomass for PFHP. The optimal condition for the combined pretreatment was 16 g/L of 1-Butyl-3-methylimidazolium Hydrogen Sulfate ([Bmim]HSO) combined with ultrasonication at a solid to liquid ratio (SLR) of 1:10 for 1.5 h under 60 °C. Under this condition, the maximum delignification of 22.9 % was obtained, in addition, the hydrogen yield (HY) and energy conversion efficiency (ECE) were enhanced by 1.5-fold and 46.4 % (p < 0.05) compared to untreated biomass, respectively. Moreover, heat map analysis was performed to evaluate the correlation between pretreatment conditions and corresponding results, suggesting pretreatment temperature had the strongest (absolute value of Pearson's r was 0.97) linear correlation with HY. Combined multiple energy production approaches might be useful for further improved ECE.
联合预处理方法被认为可以进一步提高木质纤维素生物质的光发酵生物制氢（PFHP）。为此，采用超声辅助离子液体预处理方法对芦竹生物质进行 PFHP。联合预处理的最佳条件为 16 g/L 1-丁基-3-甲基咪唑硫酸氢盐([Bmim]HSO)，在 60°C 下固液比（SLR）为 1:10，超声处理 1.5 h。在此条件下，木质素的最大脱除率达到 22.9%，此外，与未处理的生物质相比，氢气产量（HY）和能量转化效率（ECE）分别提高了 1.5 倍和 46.4%（p<0.05）。此外，还进行了热图分析以评估预处理条件与相应结果之间的相关性，表明预处理温度与 HY 具有最强的线性相关性（皮尔逊 r 的绝对值为 0.97）。结合多种能源生产方法可能有助于进一步提高 ECE。
