气候变化领域集成服务门户(CCPortal): Biochar-composting substantially reduces methane and air pollutant emissions from dairy manure

CCPortal

DOI	10.1088/1748-9326/ad1ad2
	Biochar-composting substantially reduces methane and air pollutant emissions from dairy manure
	Harrison, Brendan P.; Moo, Zeyi; Perez-Agredano, Evelyn; Gao, Si; Zhang, Xuan; Ryals, Rebecca
发表日期	2024
ISSN	1748-9326
起始页码	19
结束页码	1
卷号	19 期号:1
英文摘要	Dairy manure is one of the largest sources of methane (CH4) emissions and air pollution from agriculture. In a previous study, we showed that composting dairy manure with biochar substantially reduces CH4 emissions and could help the dairy industry meet climate goals. However, it remained unclear whether biochar could also mitigate the emission of air pollutants and odor during composting. Here, we conducted a full-scale composting study at a dairy farm and monitored the emission of greenhouse gases (CO2, CH4, N2O) and air pollutants (H2S, VOCs, NO x , NH3) from compost piles amended with or without biochar. We found that amending compost with biochar significantly reduced total CH4 emissions by 58% (+/- 22%) and cut H2S, VOCs, and NO x emissions by 67% (+/- 24%), 61% (+/- 19%) and 70% (+/- 22%), respectively. We attribute this reduction in emissions to improved oxygen diffusion from the porous biochar and the adsorption of gas precursors to the biochar surface. Interestingly, NO x fluxes from the composting dairy manure were much higher than the few values reported in the literature, suggesting that dairy manure could also be a significant source of NO x emissions. We estimate that biochar-composting of dairy manure would reduce the social cost of manure emissions from this farm by over $66 000 annually. Results from this study suggest that composting dairy manure with biochar, in addition to reducing CH4 emissions, may help to improve air quality and the health and wellbeing of rural communities, but further studies are needed to test the quantitative impacts.
英文关键词	compost; biochar; methane mitigation; air pollution; manure management; dairy
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001140252700001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299802
作者单位	University of California System; University of California Merced; University of California System; University of California Merced; California State University System; California State University Sacramento
推荐引用方式 GB/T 7714	Harrison, Brendan P.,Moo, Zeyi,Perez-Agredano, Evelyn,et al. Biochar-composting substantially reduces methane and air pollutant emissions from dairy manure[J],2024,19(1).
APA	Harrison, Brendan P.,Moo, Zeyi,Perez-Agredano, Evelyn,Gao, Si,Zhang, Xuan,&Ryals, Rebecca.(2024).Biochar-composting substantially reduces methane and air pollutant emissions from dairy manure.ENVIRONMENTAL RESEARCH LETTERS,19(1).
MLA	Harrison, Brendan P.,et al."Biochar-composting substantially reduces methane and air pollutant emissions from dairy manure".ENVIRONMENTAL RESEARCH LETTERS 19.1(2024).