Modified lignite and black coal reduce ammonia volatilization from cattle manure

肥料 氨氮 化学 尿素氨挥发 挥发 环境化学 吸附 废物管理 动物科学 氮气 粪便管理 农学 制浆造纸工业 有机化学 工程类 生物
作者
Wei Zhang,Clayton R. Butterly,Bing Han,Ji‐Zheng He,Deli Chen
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:301: 113807-113807 被引量:13
标识
DOI:10.1016/j.jenvman.2021.113807
摘要

Modified lignite and black coal (BC) are potential amendments for animal bedding to abate ammonia (NH3) emissions due to their large adsorption capacities for ammoniacal nitrogen (N). However, the ability of modified lignite and BC in reducing NH3 volatilization from livestock manure and the underlying mechanisms remain unknown. The present study has investigated the effect of lignite, modified lignite, BC and modified BC on NH3 volatilization from cattle manure, biological immobilization of manure ammoniacal N and manure properties. Modified lignite and BC reduced the NH3 volatilization from manure by 44 and 36%, respectively, which were comparable with original lignite (43%). The biological immobilization of applied stable isotope labelled 15N in lignite, modified lignite, BC and modified BC amended manures was 15, 18, 11 and 16%, respectively, which were significantly higher than that in unamended manure (4%, P < 0.001). In addition, NH4+-N concentrations of lignite, modified lignite and modified BC amended manures (7.0-7.3 mg g-1) were significantly higher than that of the unamended and original BC amended manures (3.3 and 4.8 mg g-1, respectively, P  8.2). Our results highlight that the adsorption and immobilization of manure ammoniacal N induced by amendments are the key drivers in reducing NH3 loss from manure, outweighing the pH effect. The findings of this study provide new insights into the mechanisms of coal amendments reducing NH3 loss from animal manure and their potential applications in intensive livestock systems.
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