School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230092, China.
Bioresour Technol. 2010 Sep;101(17):6610-4. doi: 10.1016/j.biortech.2010.03.086. Epub 2010 Apr 9.
Steam explosion, one potential commercial pretreatment method for lignocellulosic wastes, was used to improve methane production of bulrush. Steam exploded bulrush showed a higher methane yield than the raw sample. The effects of steam pressure, moisture content and residence time on the concentration of neutral detergent fiber (NDF) and methane yield were described using a second order polynomial equation. A minimum NDF content of 30.6% was achieved under pretreatment condition with moisture content of 16.55%, steam pressure of 1.52 MPa and residence time of 5.17 min. A maximum methane yield of 205.3 ml per degradable volatile solid was obtained at 11.0% moisture, 1.72 MPa steam pressure, and 8.14 min residence time. The breakage and disruption of rigid lignin structure by steam explosion was confirmed by thermogravimetric analysis.
蒸汽爆炸是一种潜在的用于木质纤维素废物的商业预处理方法，被用于提高香蒲的甲烷产量。与原始样品相比，蒸汽爆炸后的香蒲具有更高的甲烷产量。采用二次多项式方程描述了蒸汽压力、水分含量和停留时间对中性洗涤剂纤维（NDF）浓度和甲烷产量的影响。在预处理条件下，当水分含量为 16.55%、蒸汽压力为 1.52 MPa 和停留时间为 5.17 min 时，NDF 含量达到最小值 30.6%。在 11.0%的水分、1.72 MPa 的蒸汽压力和 8.14 min 的停留时间下，可获得最大的甲烷产量 205.3 ml/可降解挥发性固体。热重分析证实了蒸汽爆炸对刚性木质素结构的破坏和解体。
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