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H2S Removal for Biogas, Landfill Gas, and Odor Control

SULFATREAT adsorbents that improve adsorbent capacity over that of activated carbon

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SULFATREAT granular iron oxide–based hydrogen sulfide adsorbents are a highly effective means of hydrogen sulfide (H2S) removal for biogas, landfill gas, and odor control applications. These cost-effective, easy-to-operate purification adsorbents are used in fixed-bed processes and require minimal operator attention.

Advantages

  • Full service availability—system design, product supply, media changeouts, and disposal
  • Effective operation in the presence or absence of oxygen
  • Tailored system designs that align with individual operating conditions
  • Reliable and predictable performance that enables remote operation
  • Technical support throughout the operation
SULFATREAT 2242 Plus is far more effective than activated carbon at adsorbing.
Field data verifies the performance improvement using SULFATREAT adsorbents compared with activated carbon. SULFATREAT 2242 Plus reduced-pressure-drop iron oxide–based hydrogen sulfide adsorbent has a relative bed life of 200 days per vessel; SULFATREAT 410CHP reduced-pressure-drop iron oxide–based hydrogen sulfide adsorbent lasts 100 days; activated carbon lasts 60 days.
SULFATREAT 2242 Plus is far more effective than activated carbon at adsorbing.

SULFATREAT adsorbent vs. carbon

Hundreds of biogas and odor control applications worldwide use the SULFATREAT adsorbent. The proprietary iron oxide chemistry is robust and provides numerous benefits, making it a cost-efficient alternative to activated carbon.

  SULFATREAT Adsorbent
 Carbon
Overview
Highly selective in removal of H2S.
Adsorbent selected based on conditions and parameters specified by customer.
Systems are designed using proprietary software modeling. 		Universal adsorbent used for removing many contaminants from gas or vapor streams.
Removes volatile organic compounds (VOCs), heavy metals, and other components, which lead to disposal issues and also impact capacity.
System designs are typically based on conventional wisdom.
Economics
 Consistent performance and predictable unit cost of removal.
Product consumption directly relates to H2S loading (lb/d).
High density, maximizing removal capacity per cubic foot.
 Unpredictable operating costs where feedstock is variable.
Product consumption relates to quantity of all species absorbed by the bed.
Low density, minimizing removal capacity of the media per cubic foot.
Environmental
 Nonpyrophoric in both the initial and ready-for-disposal forms.
Commonly disposed at a nonhazardous landfill.
 Hazard classification of spent media is unpredictable.
Commonly disposed via incineration.
Heat of adsorption can present a fire hazard†‡.
Process
 H2S removed by chemical reaction.
Functions optimally in high-humidity gas.
Works effectively both with and without oxygen.
 Limited by high linear gas velocity to enable absorption to take place.
Negatively impacted by high humidity.
Typically requires oxygen.
Monitoring
 Highly predictable bed life is a function of the gas flow rate and inlet H2S.
 Bed life can be unpredictable and complicated depending on variable contaminants in treated gas.
Performance warranty
 Comprehensive warranty from single-source manufacturer and supplier.
 Typically no warranty is provided.
Typically sold via third parties as a commodity chemical.
† OSHA, 1997
‡ UK Environment Agency, 2017

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