H2S Removal

Hydrogen Sulfide (H2S) is a gas commonly found during the drilling and production of crude oil and natural gas, plus in wastewater treatment and utility facilities and sewers. The gas is produced as a result of the microbial breakdown of organic materials in the absence of oxygen. Colorless, flammable, poisonous and corrosive, H2S gas is noticeable by its rotten egg smell. With toxicity similar to carbon monoxide, which prevents cellular respiration, monitoring and early detection of H2S could mean the difference between life and death.

Heavier than air, H2S gas accumulates in low lying areas of poorly ventilated spaces. In oil and gas applications, sour gas (products containing H2S gas) in the presence of air and moisture may form sulfuric acid, capable of corroding metals. Facility equipment, including the internal surfaces of various components, faces reduced durability and impact strength, potentially leading to premature failure.

HAWK ENERGY is the regional leader in providing cost-effective solutions for the removal of contaminants from gaseous and light liquid hydrocarbon streams using fixed-bed technology. We offer two primary product lines for removal of H2S from gas; Granular Iron-Oxide based H2S adsorbents for saturated gas streams and High capacity Mixed-Metal Oxide based adsorbent for both dry and saturated gas streams.

We design treatment systems that address specific process conditions. Gas or vapor moves through the bed in a downflow design, and liquids are treated in an up-flow configuration. The H2S contaminants then chemically react with the adsorbent, forming a stable by-product. The flexibility of the treatment process enables the system to adapt to changes in operating conditions, often without additional equipment or retrofitting. Tailored support ranges from basic media provision through to a fully engineered technical solution comprising basic system design, media supply, detailed engineering, fabrication packages, equipment supply, and spent-media handling.

Almost all of our systems are designed as LEAD/LAG Configuration. A lead-lag vessel configuration provides the greatest operating flexibility and enables full utilization of the media, improving overall removal efficiency by as much as 20%. Gas flows through the lead bed then through the lag bed. When the lead bed becomes spent, it is taken offline and changed. During the short time that this takes, the online bed is treating the full gas flow. When the new media has been installed, the vessels are switched. The lag bed now becomes the lead bed, and the lead bed is put into the lag position. Operators are able to maximize the capacity of the beds to remove the H2S, ensuring optimal use of the absorbent. Product consumption depends only on the amount of H2S that passes through the bed, economically matching the need for H2S removal with variations in system flow conditions. A single vessel can be used but a lead or lag configuration provides the greatest operating flexibility, enabling continuous production while media is replaced.

All products are manufactured to stringent quality specifications. Customized software modeling and performance predictability enable the development of best-fit system design and operation for each application supported by highly trained personnel at every stage.


  • Reliable, predictable performance

  • Customized, flexible purification system

  • Wide range of adsorbents providing optimized solutions

  • Responsive and Respectful

  • Cost-effective hydrogen sulfide removal

  • Straightforward vessel changeouts

  • Mobile removal units

  • Highly qualified, trained, and experienced support network

Hawk Energy offers dedicated adsorbent for the removal of H2S from water and liquid hydrocarbon streams.