Production of partially refined waste glycerol

Abstract

The disclosure relates to a novel glycerol purification process that produces partially refined waste glycerol for a variety of industrial applications. The disclosure encompasses a salt-containing partially refined glycerol composition that is suitable as a fermentation grade glycerol.

1 .- 28 . (canceled) 
     
     
         29 . A partially refined waste glycerol produced by a process comprising: subjecting crude glycerol to a hydrophobic solvent to produce a mixture of crude glycerol and hydrophobic solvent, and separating the mixture of crude glycerol and hydrophobic solvent to produce a deoiled (DO) glycerol and a phase containing hydrophobic solvent and organic impurities. 
     
     
         30 .- 31 . (canceled) 
     
     
         32 . The partially refined waste glycerol of  claim 29 , wherein said partially refined waste glycerol comprises reduced salt and organic impurities as compared to a crude glycerol. 
     
     
         33 . The partially refined waste glycerol of  claim 32 , wherein said partially refined waste glycerol comprises a sodium chloride content from between about 0.05 percent to about 8.2 percent. 
     
     
         34 . The partially refined waste glycerol of  claim 32 , wherein said partially refined waste glycerol comprises a sodium chloride content from between about 0.05 percent to about 3.5 percent. 
     
     
         35 . The partially refined waste glycerol of  claim 32 , wherein said partially refined waste glycerol comprises a sodium chloride content from between about 0.05 percent to about 2.0 percent. 
     
     
         36 . The partially refined waste glycerol of  claim 32 , wherein said partially refined waste glycerol comprises a sodium chloride content from between about 0.05 percent to about 1.0 percent. 
     
     
         37 . The partially refined waste glycerol of  claim 32 , wherein said partially refined waste glycerol is a fermentation grade glycerol. 
     
     
         38 .- 55 . (canceled)