不同预处理方法对玉米秸秆结构特性、酶解糖化及光合发酵产氢性能的影响。
Effects of different pretreatment methods on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw.
机构信息
Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China.
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
出版信息
Bioresour Technol. 2020 May;304:122999. doi: 10.1016/j.biortech.2020.122999. Epub 2020 Feb 11.
In this study, the effects of different pretreatment methods, including hydrothermal, acid, alkali, acid-heat, and alkali-heat on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw were investigated. Results revealed that all the studied pretreatments effectively destroyed the corn straw structure and improved its enzymatic saccharification potential. The alkali-heat and alkali pretreatment showed significant advantage in reducing sugars release, and the highest total reducing sugar concentration of 23.07 g/L was obtained under the pretreatment condition of 2% NaOH-Heat. The maximum cumulative hydrogen yield of 137.76 mL/g TS was achieved from 2% NaOH pretreated corn straw, while corn straw pretreated with 4% NaOH-heat had the minimum cumulative hydrogen yield of 44.20 mL/g TS. These results suggest that appropriate pretreatment can effectively destroy the corn straw structure and enhance its enzymatic saccharification and hydrogen production performance.
本研究考察了不同预处理方法（包括水热处理、酸处理、碱处理、酸热处理和碱热处理）对玉米秸秆结构特性、酶解糖化和光发酵生物制氢性能的影响。结果表明，所有研究的预处理方法均能有效破坏玉米秸秆结构，提高其酶解糖化潜力。碱热处理和碱预处理在还原糖释放方面表现出显著优势，在 2% NaOH-Heat 的预处理条件下，获得了最高的总还原糖浓度 23.07 g/L。从 2% NaOH 预处理的玉米秸秆中获得了最大的累积产氢量 137.76 mL/g TS，而 4% NaOH-Heat 预处理的玉米秸秆的累积产氢量最低，为 44.20 mL/g TS。这些结果表明，适当的预处理可以有效破坏玉米秸秆结构，提高其酶解糖化和产氢性能。
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