Aeration experiments have been done over 13 years in Norway in order to evaluate the treatment done to swine and dairy manure and the changes in the manure parameters. The motivation for this experimentation was to overcome the known disadvantages associated with liquid manure. Odour and viscosity reductions have been observed as a result to aeration. In order to kill pathogens, parasites and weed seeds, the aeration time as to be long (3 to 4 weeks before spreading) and insulation of the manure storage facility helps reach elevated process temperatures. The efficiency of the aeration treatment on the manure is increased when the temperature reaches 40 to 50 C. The heat produced when the aeration is done in an insulated system can be recovered. Aeration done under the slatted floor in the swine building is not recommended as excessive evaporation occur and some conditions can present a risk for H2S poisoning.

The emissions resulting of such treatment have not been evaluated. Losses in nitrogen can be important with such treatment and the value of the manure in the nutrient cycle is than lowered.