When NH 3 emission occurs, it is usually early during the composting process. Ammonia may be captured using a scrubber. The factors influencing N 2 O and NO emissions during composting are not well understood. Researchers are working toward a better understanding of N 2 O emissions during composting and strategies to minimize emissions. A well-designed compost facility should not negatively affect the health of our air.
Producers can reduce the intensity of odors from farms in several ways.
The most obvious, perhaps, is to plan the farm layout carefully, placing sources of odor, like barns and lagoons, downwind and far from dwellings. Finally, various chemicals and bacterial cultures have been proposed for odor control, but their cost is often high and their efficacy limited. One possible approach is to add calcium bentonite, a clay with high absorption capacity, to animal diets. This additive has even been found to enhance weight gain under some conditions.