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Biogas Purification

Image by Milad Fakurian

What is Biogas?

The breakdown of organic matter produces biogas, which is 50-70 % methane by volume. Methane is a greenhouse gas over 25 times more potent than CO2 at trapping heat, and humans release millions of metric tons of it into the atmosphere each year.

Landfills, agricultural waste, and wastewater account for approximately half of these emissions, but that need not be the case. Biogas released by these sources can be upgraded into a potent energy source called Renewable Natural Gas (RNG).

Overhead View of Large Biogas producing Digesters at Biogas Plant

Producing Renewable Natural Gas

Raw biogas is contaminated with a slew of deleterious compounds that must be removed to protect downstream equipment and meet RNG purity standards. Although the specifics of the purification depend on the source of the biogas and the pipeline specifications for the final product, some of the commonly targeted contaminants are H2S, Mercaptans, Siloxanes, VOCs, Moisture, and Oxygen.

Research catalysts has been active in biogas purification for over a decade. We are an industry leader at designing Oxygen Removal Reactors for the upgrading of biogas to RNG. Within the last decade, over 30 such reactors we designed entered operation with more scheduled to start up soon.

Research Catalysts is also a prominent supplier of adsorbents utilized in biogas membrane pretreatment. These adsorbents are used to remove water, VOCs, and siloxanes to protect the sensitive membranes.

Workers Next to Large Pipes at Gas Plant
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