H2S is typically present in biogas. Waste streams that are high in proteins containing sulfur-based amino acids like methionine and cysteine, and construction waste can influence biogas H2S levels.
Our activated carbon effectively removes H2S and:
- Mitigates risk of poisons and foul odors
- Protects plant equipment from corrosion
- Ensures compliance with air permits, and
- Makes RNG profitable by meeting pipeline specifications or enabling use as vehicle fuel
Purifying biogas and concentrating the methane also requires the separation of carbon dioxide, water, nitrogen and the removal of other contaminants (siloxanes and VOCs) before it can be called RNG and used interchangeably with pipeline natural gas.
Our DARCO® BG 1, DARCO BG 1P, and NORIT® ROZ 3 are high performance activated carbons developed specifically for removing H2S from biogas streams.
Industry Leading
DARCO BG 1
- 4 x 10 GAC
- 65-100+%* Loading capacity
- Lower density / less fill cost
- Long life / Less changeouts
- Safe! Non-self heating
- Non-reversible reaction
- Easy and effective: No bricking
- Lowest $/lb of sulfur removed
Granular activated carbon
(*per operating conditions)
Pelletized Version
DARCO BG 1P
- 4mm pellet
- 55-85%* Loading capacity
- Low pressure drop
- Low dust
- Safe! Non-self heating
- Non-reversible reaction
- Easy and effective: No bricking
Extruded activated carbon
(*per operating conditions)
For Low Relative Humidity
NORIT ROZ 3
- 3mm KI Impregnated pellet
- 35-65%* Loading capacity
- Effective for low RH gas
- Easy and effective: No bricking
- Non-reversible reaction