AlpS-GmbH, Centre for Climate Change Adaptation Technologies, Grabenweg 68, A-6010 Innsbruck, Austria; University of Natural Resources and Life Sciences, Vienna, Department of Sustainable Agricultural Systems, Institute of Agricultural Engineering, Konrad-Lorenz-Strasse 24, A-3430 Tulln, Austria.
University of Natural Resources and Life Sciences, Vienna, Department of Sustainable Agricultural Systems, Institute of Agricultural Engineering, Konrad-Lorenz-Strasse 24, A-3430 Tulln, Austria.
Bioresour Technol. 2017 Nov;244(Pt 1):949-956. doi: 10.1016/j.biortech.2017.08.042. Epub 2017 Aug 12.
This study evaluated the effect of steam explosion on the chemical composition and biomethane potential of corn stover using temperatures ranging between 140 and 220°C and pretreatment times ranging between 2 and 15min. Biodegradation kinetics during the anaerobic digestion of untreated and corn stover, pretreated at two different intensities, 140°C for 5min and 180°C for 5min, were studied in tandem. Results showed that pretreatment at 160°C for 2min improved the methane yield by 22%. Harsher pretreatment conditions led to lower hemicellulose contents and methane yields, as well as higher lignin contents, which may be due to the formation of pseudo-lignin. The biodegradation kinetics trial demonstrated that steam explosion enhances the degradation of structural carbohydrates and acid insoluble lignin.
本研究采用 140 至 220°C 的温度范围和 2 至 15 分钟的预处理时间，评估了蒸汽爆破对玉米秸秆化学成分和生物甲烷潜力的影响。研究了未经处理的玉米秸秆和在两种不同强度下预处理的玉米秸秆（140°C 下 5 分钟和 180°C 下 5 分钟）在厌氧消化过程中的生物降解动力学。结果表明，在 160°C 下预处理 2 分钟可将甲烷产量提高 22%。更剧烈的预处理条件会导致较低的半纤维素含量和甲烷产量，以及较高的木质素含量，这可能是由于伪木质素的形成。生物降解动力学试验表明，蒸汽爆破可增强结构性碳水化合物和酸不溶性木质素的降解。
