Download RAW file:
Zinc oxide (ZnO) nanoparticles were evaluated in this study as a possible measure to mitigate the level of gases in swine buildings. Two deployment techniques were used: direct mixing of ZnO nanoparticles into the slurry and gas filtration with nanoparticles as filtering media. The objective of this work was to determine the impact of the treatment on reducing ammonia, hydrogen sulphide and odour emissions from swine manure. Experiments were carried out in two identical and fully instrumented experimental chambers at the Prairie Swine Centre barn facility in Saskatoon, Saskatchewan. For mixing method, the manure slurry in one chamber was treated with ZnO nanoparticles (Treatment) while the other one was configured as a normal swine room (Control) with no treatment applied. For filtration method, a ventilation air recirculation system was installed in both rooms, one had a blank filter (Control) and the other chamber had a fluidized bed filter with ZnO nanoparticles (Treatment). Three replicate trials were conducted for each treatment approach. Results showed that the addition of ZnO nanoparticles into the manure achieved more than 95% reduction in H2S level, no significant effect on NH3 concentration was observed. Effectiveness of ZnO nanoparticles was persistent in maintaining low H2S level up to 15 days after treatment application. On the other hand, the ventilation air recirculation system with ZnO filter achieved significant reduction in both H2S and NH3 concentrations at the animal- and human-occupied zones.
nanoparticles, gas emission, manure, swine, zinc oxide
A. Alvarado and B. Predicala. 2013. Controlling gas and odour emissions from swine facilities using zinc oxide nanoparticles. CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
Canadian Society for Bioengineering