2022/8/1/ · During the composting process, nitrogen loss may occur through the emission of NH 3, N 2 O, and N 2 and the leaking of NO x in the leachate (Nigussie et al., 2016; Wang and Zeng, 2018).For instance, Chen et al. (2015) indicated that N 2 O accounted for more than 80% of total nitrogen loss during dairy manure and straw composting under aerobic conditions.