Air cleaning in livestock buildings by applying the granular filtration layer

The assumptions and results of laboratory research on efficiency of ammonia removal from air by use of the cassette filter in the mechanical ventilation system were presented. A filtration layer consisted of polypropylene (PP) granulate of 5 mm grain diameter, enhanced during production process with NanoSilver concentrated preparation in concentration of 2 000 silver p.p.m. (nanoAg). Reduction factors came to: 45.1 and 51.4 at 16 l min-1 flow rate and 53.2 and 58.9% at 8 l min-1 flow rate for 0.5 and 1 l of granulate content in the layer respectively.