Lemes Yolanda M, Nyord Tavs, Feilberg Anders, Hafner Sasha D, Pedersen Johanna
Department of Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10, 8000, Aarhus C, Denmark.
Department of Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10, 8000, Aarhus C, Denmark.
J Environ Manage. 2023 Jul 15;338:117815. doi: 10.1016/j.jenvman.2023.117815. Epub 2023 Apr 2.
High ammonia (NH) and odor emission can occur after land application of liquid animal manure. This study was aimed at evaluating NH loss and odor nuisance after field application of cattle manure and how it is affected by two anaerobic digestion strategies: i) digestion of cattle manure alone and ii) digestion with catch crops and dilution by water. A system of dynamic chambers with online measurements of NH and odorous compounds (summarized as odor activity value, OAV) was used. Two experiments were conducted under different temperature conditions. The results demonstrated that anaerobic digestion did not affect NH loss but did decrease OAV. Addition of catch crops and water to the digestion process reduced both NH loss and OAV. Cool temperature in one of the experiments had a large effect on both NH and odor emissions, and at high temperature the differences between treatments increased.
在液态动物粪便土地施用后，可能会出现高氨（NH）排放和气味散发。本研究旨在评估牛粪田间施用后的氨损失和气味滋扰情况，以及两种厌氧消化策略如何对其产生影响：i）单独消化牛粪，ii）与伴生作物一起消化并用水稀释。使用了一个带有氨和气味化合物在线测量功能的动态箱系统（以气味活性值，即OAV进行汇总）。在不同温度条件下进行了两项实验。结果表明，厌氧消化不影响氨损失，但确实降低了OAV。在消化过程中添加伴生作物和水可减少氨损失和OAV。其中一项实验中的低温对氨和气味排放均有很大影响，而在高温下各处理之间的差异增大。
