Filter system for the removal of volatile organosulfur compounds (voscs) from indoor air

Abstract

The present disclosure relates a filter system for an air decontamination device for the removal of volatile organosulfur compounds (VOSCs) from indoor air at room temperature, comprising a filter cartridge, the filter cartridge containing granules and/or pellets made of two zinc compounds, the two zinc compounds being zinc hydroxide, Zn(OH)2, and zinc peroxide, ZnO2, and wherein the filter acts as an absorption filter, reacting irreversibly with the volatile organosulfur compounds that may contaminate the indoor air, either vapors of liquid organic thiols (RSH), of liquid dialkyl oligosulfides (RS—SR and RS—S—SR, including those present in Allium species), and of the solvent carbon disulfide (CS2). The disclosure also relates to a method for removing these groups of volatile organosulfur compounds from indoor air, wherein a controlled airflow of the indoor air is passed through a filter system comprising granules or pellets prepared from zinc hydroxide, Zn(OH)2, and zinc peroxide, ZnO2, and wherein the volatile organosulfur compounds irreversibly react with the hydroxide and peroxide ions of the aggregates (either pellets or granules) to yield solid and innocuous zinc salts, and are thereby captured in the filter system.

Dependencies are inferred from the claim text.