Page 191 - Lignocellulosic Biomass to Liquid Biofuels
P. 191

found                           use  the
                     of                                     to  to      (Continued)
                     volumes  been  extracting  without  occurring  due  polar



                     high  Carcinogenicity  have  lipids  phase  Time-consuming  in  layer  contamination  Energy-intensive  pressure  enough  not

               Limitations  Requires  •  solvents  •  Polar  •  aqueous  in  •  Difficulty  •  organic  •  high  of  CO 2  •  separation







                              cell   of  polar  do  strong  system  and  values  volumes
                     “golden  lipid  combination  disrupts  solvents  interference  compounds  extracts  compounds  to  due  used  salt  effects  nontoxic



                     as  for      polar         interfere,  solvents  solvent  ionic  analysis  is  critical  low  solvent
               Advantages  Regarded  •  standard”  extraction  Solvent  •  successfully  membranes  of  Use  •  decrease  nonlipid  Efficiently  •  lipids  Nonlipid  •  not  polar  Buffered  •  prevents  adsorption  Rapid  •  gas  CO 2  •  have  Reduced  •  required






           methods.  of  use  the  help  may



           extraction  involved  to  due  Reuse  costs  some



           lipid  Cost  cost  High  solvents.  save         cost  High
           microbial



           different  Efficiency  Moderate


           of    rating                                     High
           Comparison                                       CO 2




           4.6       organic  of  solvents                  Supercritical
           Table  Method  Use
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