Arsenic & Phosphine Removal

Arsine and phosphine are undesirable contaminants in natural gas. Arsine gas is naturally produced in geothermal steam. As the oil and gas industry extracts gas from deeper, hotter geological formations, arsine may even become a bigger issue in the future. Phosphine is formed from putrefaction of organic matter. The presence of arsine or phosphine in light hydrocarbons such as propylene can lead to poisoning of catalyst in subsequent gas processing systems, or pass into downstream final products


Adsorbents for Arsine & Phosphine


Activated alumina (AA) is the most commonly used adsorbent for the removal of arsenic from aqueous solutions. However, conventional porous solids including AA have ill-defined pore structures and, typically, low adsorption capacities and actually in a kinetically slow manner. An ideal adsorbent should have uniformly accessible pores, and interlinked pore system, a high surface area, and physical and/or chemical stability. To meet this requirement, mesoprous alumina (MA) with a wide surface area and uniform pore size  was prepared, and a spongelike interlinked pore system was developed through a post-hydrolysis method




GSorb-810 is a Cu/ZnO  base adsorbent that widely used for removal of arsine, phosphine and reactive
sulfur from propylene containing streams. Due to its high surface area and ultra fine copper crystallite size, GSorb-810 is a ideal choice for the removal of AsH3, phosphine, H2S and COS from process and product streams