Silica Gel

  • Removes siloxanes
  • Required to keep silica from plating onto hot surfaces during combustion as silicon dioxide (sand or glass)
  • Silica Gel
    • Good potential for removal of certain siloxanes from biogas
    • High adsorption capacity
    • Selectively retains organic silicon compounds
  • Cooling
    • Siloxanes can be removed from the cooled gas with condensation water
    • Highly dependent on temperature and pressure
  • Specialty Media (Al2O3, ZnO, etc.)