Page 213 - Lignocellulosic Biomass to Liquid Biofuels

disadvantages/limitations processes. pretreatment various of Remarks Disadvantages/ Advantages limitations other for step Processing lignin remove Cannot final the Reduces methods pretreatment hemicelluloses, and heat, and size particle large-scale and energy high transfer mass unfeasible is operation

and action/ size DP, the of partial of of cleavage
advantages of Mechanism particle of hydrolysis hemicellulose, depolymerization lignin, β-1,4-glycosidic bonds

major effects Reduces Decrease

the process
of field, radiation) pyrolysis
Summary method pretreatment pretreatment grinding, electron (g-rays, electron irradiation, electrical microwave or

5.2 Pretreatment Physical (chipping, milling) energy radiation ultrasound, pulsed rays, heating, High-temperature
Table I. Mechanical and High beam UV