Page 216 - Lignocellulosic Biomass to Liquid Biofuels
P. 216

biomass  lignin  high  and  nature,  leaks  avoided  (Continued)

                                                  for               easily  are  in  digester  be
                                                  Unsuitable  containing  content  Solvents  volatile  hence,  should







                      toxic  expense  reactor  high  high  and  formation  biomass  to  due  consuming,  high  considerable  the  due  solvent  certain
                    and  of  high  nature,  easily  the  at  loss  lignin,  alkaline  to  generation  of
                    toxic  formation  compounds,  acids,  corrosive  can  equipment,  occurs  temperature  pressure,  inhibitors,  degradation  time  of  challenge  neutralization  inhibitors  expensive  cleaning  reactor,  on
                    Highly  of  hence,  corrode  cost,  of  material  More  destroys  cost  catalyst,  process,  of  Highly  to  from  effects





                    of  to  sugar  and            as  of   low      and  easy  low
                    hydrolysis  hemicellulose  lignin  and  high  with  fast  yield,  need  not  acid,  of  lignin  the  well  as  removal  acetyl  and  of  hemicellulose,  formation  lignin  to  hemicellulose,  organic  with



                    Effective  xylose  alteration,  conversion  good  does  recycling  alters  structure  Effective  efficient  lignin  groups  inhibitor  Hydrolysis  recover  to  solvent








                    the  materials,  of  and      both  easily        lignin carbohydrate
                    solubilize  lignocellulosic  biomass  fractionation  hemicellulose  lignin  solubilize  and  lignin  hemicellulose  break  bonds



                    To                            To                To
                process

                pretreatment  (using  acids  conc.  H 2 SO 4 )  HCl,  [using hydrolysis  Ca  KOH,  lime]  pretreatment  organic  EtOH-  say




                Chemical  pretreatment  or  dilute  as  such  Alkaline  NaOH,  (OH) 2 ,  Organosolvent  (using  solvents,


                II.  Acid
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