Page 74 - Lignocellulosic Biomass to Liquid Biofuels
P. 74

consumption,
                    energy
                    high
           Disadvantages
                    Relatively
                    medium
                    reaction
                    of
           Advantages
                    cost
                    Low
                      high  of concentration  low  of formation  little  a  Only  (water).  the  in  sugar hemicellulosic  sugar Hemicellulosic inhibitors.  as  well  as hydrolyzate pretreatment Cellulose  high.  is recovery  in  water  waste  of  amount  large  a improved  well  is digestibility  high  processing downstream  must  Acid inhib
           to       pretreat  and  biomass.  at  hemicelluloses  cellulose  lignin  biomass  porosity  linkages  and  Cell  with  and
           mechanisms  digestibility  to  temperature  external  any  pretreat  acid  acidic  a hydrolyze  and  hydrolyze  modify  reduce  increase  lignin  the  the  carbohydrate  delignification  deconstructed  porosity
           and      water  hot  high  without  to  added  an  as  to  of  part  lignin  the  to  acid  and  as  well  and  digest  break  and  lignin  hemicelluloses.  is  in
           action  cellulose  liquid  at  plays  disrupt  mineral  hemicelluloses  as  size  to  alkalis  and  in  of  thus  increase

           of         biomass  pressure  chemicals  Water  temperature  considerable  structures  structure  particle  structure  between  resulting  removal  structure  great  area.
           Mode  improve  Using    and  Using                 Using

        (Continued)  pretreatment  water




        2.2  Pretreatment  hot  (hydrothermal)  pretreatment  acid  prehydrolysis  pretreatment
        Table  methods  Chemical  Liquid  Dilute              Alkaline
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