Page 222 - Lignocellulosic Biomass to Liquid Biofuels

is
operation

Remarks Large-scale unfeasible

cost, raw issues usage
high for content water input, of lignin carbohydrate
Disadvantages/ limitations softwood, efficient not lignin high material, environmental area and Abundant energy and incomplete destruction

Advantages decrystallization, lignin depolymerization, and efficiency high for selectivity lignin, with reaction surface increased absence cellulose, of inhibition of formed, substances reduce, to ability recycle and recover, needs ammonia, the moderate pH, temperature, high time, short for selectivit

action/ and (80°C 150° for psi) period followed soluble hot of use moderate

of 200 400 short min) instantaneous release of and hemicellulose to
Mechanism effects temperature pressure C; very a (5 30 by pressure Removal lignin hydrolysis, water

(Continued) method

5.2 Pretreatment
Table LHW