SulfaTrap™ Offers Many Products to Treat Biogas

from Anaerobic Digestion, Bio-Waste Gasification, and Landfill Gas Recovery

Effective utilization of biogas as bio-methane or a feedstock to chemical conversion and power generation applications requires the removal of impurities such as sulfur (e.g., hydrogen sulfide, mercaptans, and disulfides) and siloxanes.

SulfaTrapTM-R7Q and SulfaTrapTM-R7J sorbents for treating the raw (wet) or dry biogas for H2S removal.  SulfaTrap™-R8 sorbents are formulated as a moisture tolerant sorbent for removing mercaptans, COS, organic di-sulfides and tri-sulfides. SulfaTrap™-R8 can reduce the sulfur concentration in the biogas to low ppbv levels in one step.

Siloxanes are man-made organic compounds that contain silicon, oxygen and methyl groups used in personal hygiene and health-care products. At the wastewater treatment plants and landfills the low molecular weight siloxane species volatilize and contaminate the digester gas. SulfaTrap™-Si and SulfaTrap™-R8 sorbents remove the siloxanes from biogas without requiring refrigeration/chilling of the biogas.

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  • Moisture Tolerant

    SulfaTrap™-R8 is formulated as a moisture tolerant sorbent; it can achieve high sulfur capacity not only for hydrogen sulfide (H2S) but also for all mercaptans, organic di-sulfides and tri-sulfides, reducing the sulfur concentration in the biogas to low ppbv levels

  • Sulfur Concentration

    SulfaTrap™-R8 can reduce the sulfur concentration in the biogas to low ppbv levels in one step - Siloxanes are man-made organic compounds that contain silicon, oxygen and methyl groups used in personal hygiene, health-care and industrial products - At wastewater treatment plants and landfills, the low molecular weight siloxane species volatilize and contaminate the digester gas

  • VOCs, Tars and Heavy Hydrocarbons

    SulfaTrapTM-R8HB sorbent also removes VOCs, tars and heavy hydrocarbons that may be present in landfill gases

  • Siloxane Removal

    SulfaTrap™-Si and modified SulfaTrap™-R8 sorbents remove siloxanes from biogas without applying any refrigeration or other complicated gas treatment processes

  • Bulk Removal of H2S

    SulfaTrap™-R7Q / R7J sorbents are offered for bulk removal of H2S - The sulfur concentration in biogas can be very high (200 - 15,000 ppmv) and saturated with water (~5-8%-v H2O)

  • Halides and Cyanides

    SulfaTrapTM-R2 series sorbents are highly effective for removing organic sulfur compounds, halides and cyanides, allowing the conversion of biogas to value-added biochemicals through biological processes

SulfaTrap offers full service engineering, design and construction services including modular fabrication, field services and material and process support.

SORBENTS FOR BIOGAS UPGRADING

Bulk H2S removal from wet or dry biogas"
Mercaptan, COS removal, food grade purification of CO2 "
Removal of heavy sulfur compounds, VOCs and siloxanes"
Removal of halides, HCN and sulfur polishing"
Molecule for SulfaTrap Desulfurization Sorbent Research
  • Features
    • High selectivity
    • High removal efficiency to all sulfur species, reducing total sulfur concentration to less than 5 ppbv (if desired)
    • High capacity for all sulfur species (e.g., 35% wt. S uptake for H2S removal)
    • Effective for removing organic sulfur compounds (e.g. mercaptans & disulfides)
    • Effective for removing siloxanes
    • Easy disposal
    • Expendable or regenerable operation
Molecule for SulfaTrap Desulfurization Sorbent Research