SULFURTRAP® EX H2S Removal Adsorbent

Hydrogen Sulfide Removal from Biogas and Natural Gas

Hydrogen Sulfide Removal from Natural Gas and Biogas

H2S <1 ppm. EASY.

Choosing the best adsorbent for hydrogen sulfide (H2S) removal from natural gas is serious business. The intrinsic corrosivity and extreme health hazards that exist when processing gas streams contain hydrogen sulfide can negatively affect your profitability. Chemical Products Industries Inc. adsorbent, SULFURTRAP® EX, is a proven, cost-effective, environmentally friendly adsorbent for H2S removal that you can count on. 

SULFURTRAP® EX is an extended life H2S adsorbent media that removes hydrogen sulfide (H2S) and light mercaptans. Its high sulfur-loading capacity and free-flowing characteristics result in an increased bed life and reduced maintenance and replacement costs. So you get efficient, long-lasting hydrogen sulfide removal from natural gas and biogas processing applications!


Compared to other H2S adsorbents, SULFURTRAP® EX lasts longer.It provides hydrogen sulfide gas removal up to 2-3 times longer than the leading solid scavenger, significantly reducing treating costs. In fact, it is proven around the world to offer the lowest $/lb of sulfur removed and $/Mcf treating cost for low-temperature H2S removal applications. SULFURTRAP® EX operates efficiently in a broad range of conditions, including partial to fully water-saturated gas as well as gas streams with and without oxygen. So, regardless of your gas stream composition, you get consistent spec level H2S removal from biogas and natural gas.


SULFURTRAP® EX provides hydrogen sulfide gas removal at lower maintenance and replacement costs. Because of its free-flowing characteristics, SULFURTRAP® EX hydrogen sulfide adsorbent, can often be replaced in half the time it takes to replace other solid-based H2S scavenger media. Easy.


H2S removal from biogas can be easily achieved with SULFURTRAP® EX. Due to the nature of the raw materials used to produce biogas (ex. manure, agricultural and landfill waste) and the anaerobic environment, hydrogen sulfide is commonly found as a contaminant in biogas. During the digestion process, H2S can reach concentrations up to 5000 ppmv, and therefore needs to be removed before the biogas can be stored, transported or used. SULFURTRAP® EX H2S removal adsorbent can treat sour biogas prior to dehydration for bulk removal or as a polishing step.

Ask industry leaders about SULFURTRAP® EX

“We rely on SULFURTRAP® EX and Chemical Products Industries Inc.’s expertise for reliable, cost-effective H2S removal from natural gas. Any processor concerned with safety and economics should do the same.”

Jason, Senior Staff Engineer
Fortune 500 E&P Company

“SULFURTRAP® EX has been the best solid scavenger for our landfill gas sulfur removal operations. It removes H2S and mercaptans at the front-end of the plant which increases overall plant efficiency.”

Doug, Operations Manager
Landfill Gas Plant


Extended life, low pressure drop, easy changeout iron based pellets. Lasts 2-3 times longer than the leading hydrogen sulfide adsorbent. For gas phase applications. 

  • hydrogen sulfide (H2S) removal
  • hydrogen sulfide (H2S) removal
  • hydrogen sulfide (H2S) removal
  • hydrogen sulfide (H2S) removal



  • Lasts 2-3 times longer than leading competitor
  • Easy changeout, minimizes downtime and labor costs
  • Lowest $/lb of sulfur and $/MCF treating cost
  • Removes both H2S and light Mercaptans
  • Easily achieves outlet H2S <1 ppm
  • Reliable operation, low-pressure drop
  • Effective over a wide range of space velocities 
  • Effective in anaerobic conditions
  • Effective at different humidity levels
  • Removes oxygen (O2)


SULFURTRAP® EX sulfur removal adsorbent is effective across a wide variety of upstream, midstream and downstream applications

  • Refinery plants
  • Wellhead processing 
  • Offshore production
  • Petrochemical plants
  • Gas processing plants such as: 
    • Natural gas
    • Biogas
    • Syngas
    • CO2
    • Amine unit acid gas
    • LNG, LPG, NGL
  • Gas storage
  • Gas transportation
  • Wastewater treatment
  • Odor control
  • StainGuard-50 Applications
  • StainGuard-50 Applications
  • StainGuard-50 Applications


In typical configurations, SULFURTRAP® EX is loaded into a single vertical vessel, a lead-lag vessel configuration or a parallel vessel configuration where gas or vapor flows through the bed. The sulfur compounds chemically react with SULFURTRAP® EX pellets to form a safe, stable, non-hazardous and free-flowing byproduct. Depletion of the SULFURTRAP® EX H2S removal adsorbent occurs gradually from inlet to outlet and is dependent only upon the concentration of hydrogen sulfide and flow rate through the bed. SULFURTRAP® EX works in partially saturated to fully water saturated and aerobic or non-aerobic environments.



SULFURTRAP® EX is an iron based scavenger. It is also referred to as a fixed-bed or solid type scavenger. It is not a liquid scavenger such as triazine, but often can be used in place of liquid scavenger systems.

Yes. SULFURTRAP® EX physical properties such as surface area, pore structure, and shape have been designed specifically for use in gas phase sulfur removal applications.

Yes. SULFURTRAP® EX is a solid pellet type material with high sulfur adsorption capacity.

Yes. SULFURTRAP® EX is based upon patented, concentrated iron oxide based chemistry.

No. SULFURTRAP® EX works across a broad range of process conditions from aerobic to anaerobic and from fully saturated to partial saturation to dry conditions.

No. SULFURTRAP® EX prior to use is classified as non-hazardous. The spent reagent is also generally considered non-hazardous. More details can be found in the SULFURTRAP® EX PDS and SDS.

Due to its general non-hazardous characteristic, SULFURTRAP® EX can be disposed of in landfills following local and state regulations and should be qualified appropriately before final disposal. More details can be found in the SULFURTRAP® EX PDS and SDS.

SULFURTRAP® EX is unique in its category not only due to the high purity and non-hazardous nature of the raw materials used in its production, but also due to its high flexibility or broad range of usage.

Biogas produced by anaerobic digestion of organic raw material can be obtained using various feedstocks (dairy manure, food waste and municipal solid waste). Therefore the gas composition can vary depending on the source, leading to different sulfur contaminants such as hydrogen sulfide, mercaptans and sulfur dioxide.

Hydrogen sulfide and water vapor will react during combustion forming corrosive sulfuric acid. Therefore, since a primary application of biogas is for use as a fuel that can be burned like natural gas, corrosive contaminants like H2S must be removed.

There are different adsorption methods to remove H2S from biogas: solid media, biological scrubbing or chemical scrubbing. Selecting the appropriate one depends on parameters such as flowrate and H2S concentration. In general terms, fixed iron bed solid media, such as SULFURTRAP® , are used for low flow rates and low H2S levels.

H2S and water are produced during anaerobic digestion, therefore, the gas leaving the digester would be water saturated and this would be the ideal location for an adsorbent such as SULFURTRAP® EX. If the gas is treated downstream of the digester, after the water vapor is removed, then a dry gas adsorbent such as SULFURTRAP® ST1 would be more appropriate.



  • Technical support staff
  • Equipment design and process optimization for new or existing fixed-bed applications
  • Operational advice (start-up, unloading, disposal)
  • Monitoring
  • Bed-life follow-up
  • Warranty

For guidance on finding the right solution for your specific H2S and Mercaptan removal needs, please contact our team of industry experts.

Advanced. Effective. Proven.

Related Products:

SULFURTRAP® ST1 – H2S Adsorbent For Dry Gas 
SULFURTRAP® LH – H2S And Mercaptan Adsorbent for Liquid Hydrocarbons
PERCO® – Catalyst For Mercaptan Removal In Liquid Hydrocarbons
ACCESSORIES – Bed Support Material, Felt Pad, Screen


Have a question? Need a quote? Our technical staff is here to help you identify the right solution for your project requirements.