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Zinc

Zinc oxide is often used as an adsorbent to remove H₂S from various feedstocks, such as natural gas or biogas. The zinc oxide is typically in pellet form, is hard, and highly porous. It is used at elevated temperatures to maximize its adsorption capacity. When we talk about desulfurization with zinc oxide, we are referring to fine desulfurization, or purification down to just a few ppm of sulfur in the feedstock.