Ammonia emission during frequent mixing of slurry with air: research on dairy campus.


Four experiments have been conducted between 2016 and 2018 at Dairy Campus in Leeuwarden, The Netherlands with the aim to measure the effect of daily mixing of dairy slurry on the emission of ammonia. Daily mixing of slurry either with air pumped into the slurry or with an electrical mixer did not result in reduction of ammonia emission. The assumption that preventing a crust to be formed on top of the slurry by frequent mixing would reduce ammonia emission was not supported by the results found the emission measurements units at Dairy Campus (The Netherlands) in four experiments.

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