Anaerobic digestibility and fiber composition of bulrush in response to steam explosion.
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.
Wang
Jin
J
School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230092, China.
Yue
Zheng-Bo
ZB
Chen
Tian-Hu
TH
Peng
Shu-Chuan
SC
Yu
Han-Qing
HQ
Chen
Hong-Zhang
HZ
D000693:Anaerobiosis; D008031:Lignin / Q000378:metabolism*; D008697:Methane / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D013056:Spectrophotometry, Ultraviolet; D013227:Steam
D013227:Steam; D008031:Lignin; D008697:Methane