State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Bioresour Technol. 2020 Nov;316:123905. doi: 10.1016/j.biortech.2020.123905. Epub 2020 Jul 28.
Emission of nitrous oxide (NO) during animal manure composting is of great concern, and its emission factor (EF) is important for greenhouse gas emission inventory, while the EF is still uncertain due to limited on-site full-scale observations worldwide. In this study, NO emissions were monitored during different seasons in a full-scale swine manure windrow composting with pile volume of about 76.5 m. The results showed that the maximum NO flux during the cold season (CS) was 23 times higher than during the warm season (WS), significant differences in the contribution to direct NO emissions were observed in three composting stages, and shaded-side NO emission was higher than sunny-side emission. The direct NO emission factors of animal manure composting were 0.0046, 0.0002 kg NO-N/kgTN (dry weight) in the CS and WS, respectively. Scenario analysis results showed that windrow composting is a suitable manure management that emits less NO than solid storage.
在动物粪便堆肥过程中会排放氧化亚氮（NO），这引起了人们的高度关注，其排放因子（EF）对于温室气体排放清单非常重要，然而，由于全球范围内现场全尺度观测的有限性，EF 仍然不确定。在本研究中，对一个约 76.5 立方米猪粪条垛堆肥在不同季节的 NO 排放进行了监测。结果表明，在寒冷季节（CS）的最大 NO 通量比温暖季节（WS）高 23 倍，在三个堆肥阶段观察到对直接 NO 排放的贡献有显著差异，并且遮荫面的 NO 排放高于阳光面。动物粪便堆肥的直接 NO 排放因子分别为 CS 和 WS 中的 0.0046、0.0002 kg NO-N/kgTN（干重）。情景分析结果表明，条垛堆肥是一种合适的粪便管理方式，其 NO 排放量低于固体储存。
