Ammonia Scrubbing Filter
Ammonia emissions are one of the major air quality concerns at the global, national and regional levels (NRC 2003). Ammonia (NH3) emissions from poultry farms account for 27% of the U.S. total atmospheric ammonia emissions. High NH3 levels are a concern both inside and outside the poultry house; it is a precursor of acid rain and significantly compromises poultry welfare (Dawkins et al., 2004). It is not just malodorous, but has a significant hazardous effect on the health of caretakers. Ammonia levels are particularly important during winter in cooler climates where ventilation may be reduced to conserve heat (Carlile 1984). Therefore, there is a great need to reduce NH3 emissions from poultry farms to reduce the harm to animal and human health and the environment.
TDA Research, Inc. (TDA) has developed a bi-functional sorbent and catalytic ammonia conversion system that integrates a high-capacity ammonia sorbent and an ammonia oxidation catalyst (together called SorboCATTM) in a single system to remove ammonia from poultry house air down from 20 parts per million (ppm) or more to the parts per billion (ppb) levels and then convert the adsorbed ammonia into benign gaseous N2 and water vapor, eliminating the need for disposal. TDA’s ammonia removal system, here on referred as SorboCATTM, is a drop in solution that can be integrated into existing poultry (and other animal) farm air handling systems. SorboCATTM will control the NH3 emissions from poultry farms, keeping them to less than 1 part per million (ppm) in the exit air. The process is continuous and simple, providing uninterrupted ammonia removal. The rotating wheel provides valve-free switching of the sorbent bed between the ammonia removal (adsorption – sorbent function) and the ammonia regeneration (desorption – sorbent function) and the ammonia laden air from the desorption section is selectively oxidized into N2 and H2O (catalyst function) in a downstream (integrated) catalyst subsystem. This system could also be used to maintain low ammonia levels (less than 20 ppm, the recommended maximum ammonia level for chicken health is 25 ppm) in poultry houses (and other indoor animal housing facilities).
Enhances the capability of the First-Response Respirator Cartridge (FRRC) used in the personal respirator mask for NH3 and hydrazine removal.
Protects against potential leaks in a spacecraft's cooling system.
Capability to deal with a 30,000 ppmv (3% vol.) NH3 challenge.
Removes airborne particulates and all harmful by-products of a small fire.
Effective in both dry and humid conditions (from 0 to 100% RH).
Full protection against volatile organic compounds (VOCs), carbon monoxide (CO), acid gases etc.
