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Christopher L Aikens

Slawomir Winecki

Martin Keller

Olga B Koper

Amy Elizabeth Quiring

Maciej Stanislaw Matyjaszczyk

Brandon Walker

An improved air purification adsorbent is disclosed. The air purification adsorbent comprises titanium dioxide (TiO) impregnated with zinc chloride (ZnCl2). The adsorbent may be used in air purification systems for removing ammonia from air streams. The nanocrystalline (amorphous) structure of the adsorbent results in a higher density of surface defects, higher surface area, and higher reactivity which, when combined with the synergistic effect of ZnCland the nanocrystalline TiO, provides a significantly longer breakthrough time of ammonia as compared with breakthrough time from unimpregnated nanocrystalline TiO, the commercial (crystalline) TiOimpregnated with ZnCl, pure ZnCL, and other commercially available adsorbents of ammonia. Other embodiments are described and claimed.

Adsorbent for removal of ammonia from air streams

To achieve the removal of a broad spectrum of chemical hazards, multiple layers of impregnated activated carbon and nanocrystalline materials are incorporated into the adsorbent bed. For optimum performance using the least amount of material, a two-layer configuration is used. The top layer consists of a homogeneous mixture of an MgO/CaO based nanocrystalline material (e.g., Mg/Ca) and Kureha or other petroleum pitch-based bead shaped activated carbon impregnated treated with phosphoric acid. The bottom layer is comprised of a single layer of Calgon URC carbon. The volume ratios of the components are 9:5:11 Mg/Ca, phosphoric acid treated Kureha carbon, and URC, respectively. The new configuration leads to a 30% reduction in size of the existing NIOSH CBRN CAP 1 cartridge. Other embodiments are disclosed and claimed.

Multilayered mixed bed filter for the removal of toxic gases from air streams and methods thereof

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Manhattan, KS, United States of America

Christopher L Aikens