Anaerobic digestion coupled with digestate injection reduced odour emissions from soil during manure distribution.

摘要: This work aimed to measure the odour impact of untreated cow and pig slurries treated (digestate liquid fraction digestate) manures when they were used on soil at a field scale, while also testing different spreading methods, i.e. surface vs. injection. Five experiments performed in 2012-2016 farms. Odours quantitatively (specific emission rate - SOER) (OUEm-2h-1) measured by using dynamic olfactometry qualitatively, obtain an "odour fingerprint", electronic nose (EN). Anaerobic digestion was effective allowing reduction potential from digestates, so that dosed soil, odours emitted much lower than those soils which used. Slurries/digestate injection reduced more SOER tended become similar control (untreated soil) although slightly greater. Odour fingerprint data indicated there direct correlation between fingerprints. due ability EN detect ammonia, S-compounds methane (the first two mainly), also, responsible for odours. Very good regression found Log Partial Least Square (PLS) approach (R2=0.73; R2cv=0.66; P<0.01) matrices fertilize lab tests. Unfortunately, not used, cannot be proposed replace olfactometry. fingerprints (Blank) injected organic virtually identical, creation cavities during decreased surface. subsequent digestate allowed us reduce impact, avoiding annoyance local inhabitants.