The effect of Chamaecyparis obtus extract on the concentrations of odorous compounds and odor activity value from air in swine feeding operation

This study aimed to survey the chemical change and germination effect of anaerobic digestate after pH adjustment and aerobic treatment. The amount of ammonia (NH 3 ) in swine slurry anaerobic digestates (SS AD) of pH 7.0 and pH 6.5 were lower than that of un-adjusted anaerobic digestate. Especially, the anaerobic digestate with pH 6.5 had the lowest NH 3 generation. The amount of NH 4 -N has been gradually decreasing in the untreated anaerobic digestate, however, the anaerobic digestates with pH 7.0 and pH 6.5 showed no significant changes. In the germination tests with different methods, the germination index (GI) of anaerobic digestates with pH 7.0 and pH 6.5 was higher than that of un-adjusted anaerobic digestate. Thus, the pH adjustment will be useful to decrease the gas generation such as NH 3 , which causes the odor generated from anaerobic digestate.

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Effect of pH adjustment on the liquefaction process of anaerobic digestate and seed germination

Byeon

Lee

Ryoo

et al. 2021

Journal of Animal Environmental Science

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Effects of pH modulation on the concentrations of odorous compounds from pit slurry of a pig operation building

Hwang¹,

Park²,

Jung³

et al. 2018

J. Odor Indoor Environ.

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The effect of Chamaecyparis obtus extract on the concentrations of odorous compounds and odor activity value from air in swine feeding operation

Cited by 2 publications

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Effect of pH adjustment on the liquefaction process of anaerobic digestate and seed germination

Effect of pH adjustment on the liquefaction process of anaerobic digestate and seed germination

Effects of pH modulation on the concentrations of odorous compounds from pit slurry of a pig operation building

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