Biogas containing hydrogen sulfide (H2S) is problematic for any form of gas utilization, whether for boiler steam generation, engine power generation, renewable natural gas (RNG) production, or even meeting emissions standards from a flare. H2S is also strictly regulated by gas utilities, making H2S removal from biogas a critical step before it hits the pipeline. Given its corrosive nature, H2S can be detrimental to pretreatment and upgrading equipment, requiring high-spec materials, specialized coatings, shortened maintenance intervals, and a higher probability of premature equipment failure. In the RNG market, H2S removal is often the highest operational expense in upgrading raw biogas to pipeline quality.
In our premier H2S absorbent, FerroSorp®, iron hydroxide is the crucial ingredient that attracts the H2S. It is then chemically changed into elemental sulfur, which attaches to the inside of the FerroSorp® pellets. Iron hydroxide-based media natively contains 25% more oxygen per iron atom than traditional iron oxide-based medias. This higher oxygen content within the media is responsible for effective H2S treatment without needing additional oxygen from the gas stream.
In conjunction with the VAV bulk media vessel, hydrogen sulfide removal with FerroSorp is easier and more cost-effective. FerroSorp absorbs more sulfur than competitors’ media, extends change-out intervals, and lowers the overall cost of operations. VAVs are designed for gas to flow through the entire bed, evenly utilizing the media while maintaining low-pressure drop. Another significant aspect of the VAV is its ease of installation and rapid deployment. VAVs are dispatched quickly and can easily be implemented in new or pre-existing sites.
Treat Your H2S First – Removal Solutions
Biogas containing H2S is problematic for pretreatment and upgrading equipment, requiring the use of high-spec materials, specialized coatings, shortened maintenance intervals, and a higher probability of premature failure. So why not take out the H2S first? With the VAV and FerroSorp, treating hydrogen sulfide at the source is easy and cost effective.
VAV 101 – The Vacuum Adsorption Vessel
The Interra Global Vacuum Adsorption Vessel, or VAV, is a mobile bulk media vessel designed for H2S removal with FerroSorp H2S removal media. Units are portable and can be placed directly on dirt or gravel at a site. Deployment is rapid, and using a VAV is as easy as plug-and-play. VAVs are designed for gas to flow evenly through the entire bed and fully utilize the media.
Removing H2S with Limited Oxygen from Dairy Digesters
The renewable natural gas (RNG) energy market is growing exponentially in the United States and Canada. As a result, numerous new dairy digesters are being built to extract methane from dairy manure and converting it into usable natural gas. This process helps capture methane from manure before it decomposes naturally and detrimentally enters the atmosphere. […]
How Do You Remove H2S From Biogas?
The gaseous compound, hydrogen sulfide (written as H2S), is a hazardous byproduct of many biological and industrial processes including the creation of biogas. It’s usually critical to separate the H2S gas from desirable or less hazardous gasses before they can be further refined. This is not, however, a simple matter. Fortunately, modern techniques are making […]
As VAVs require no pad or infrastructure to deploy, placing one right at the digester, lagoon, or wellhead is as easy as plug-and-play. Rated for full vacuum and serviceable by hydraulic truck, there isn’t a more convenient or flexible H2S scavenger system in the industry for making your biogas clean and safe.
Interra Global customizes comprehensive H2S scrubbing solutions for landfill gas, livestock/dairy sites, food waste digesters, & other applications. Our engineering and support teams are here to help you work through unique site specifications and ensure FerroSorp H2S removal media and the VAV are the right H2S removal technologies for your application.