气候变化领域集成服务门户(CCPortal): Greenhouse gas emissions from digestate in soil

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DOI	10.30486/IJROWA.2020.1885341.1005
	Greenhouse gas emissions from digestate in soil
	Dietrich M.; Fongen M.; Foereid B.
发表日期	2020
ISSN	21953228
起始页码	1
结束页码	19
卷号	9 期号:1
英文摘要	Biogas residues, digestates, contain valuable nutrients and are therefore suitable as agricultural fertilizers. However, the application of fertilizers, including digestates, can enhance greenhouse gas (GHG) emissions. In this study different processes and post-treatments of digestates were analyzed with respect to triggered GHG emissions in soil. In an incubation experiment, GHG emissions from two contrasting soils (chernozem and sandy soil) were compared after the application of digestate products sampled from the process chain of a food waste biogas plant: raw substrate, digestate (with and without bentonite addition), digestates after separation of liquid and solid phase and composted solid digestate. In addition, the solid digestate was sampled at another plant. The plant, where the solid digestate originated from, and the soil type influenced nitrous oxide (N2O) emissions significantly over the 38-day experiment. Composting lowered N2O emissions after soil application, whereas bentonite addition did not have a significant effect. High peaks of N2O emissions were observed during the first days after application of acidified, liquid fraction of digestate. N2O emissions were strongly correlated to initial ammonium (NH4 +) content. Fertilization with dewatered digestate (both fractions) increased N2O emission, especially when applied to soils high in nutrients and organic matter. © 2020, Islamic Azad University. All rights reserved.
英文关键词	Digestate; Food waste; Greenhouse gas; Nitrous oxide; Organic fertilizer
scopus关键词	ammonium; carbon emission; greenhouse gas; nitrogen dioxide; organic matter; soil pollution; soil quality; solid waste
来源期刊	International Journal of Recycling of Organic Waste in Agriculture
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176731
作者单位	Norwegian Institute of Bioeconomy Research, NIBIO, As, 1431, Norway
推荐引用方式 GB/T 7714	Dietrich M.,Fongen M.,Foereid B.. Greenhouse gas emissions from digestate in soil[J],2020,9(1).
APA	Dietrich M.,Fongen M.,&Foereid B..(2020).Greenhouse gas emissions from digestate in soil.International Journal of Recycling of Organic Waste in Agriculture,9(1).
MLA	Dietrich M.,et al."Greenhouse gas emissions from digestate in soil".International Journal of Recycling of Organic Waste in Agriculture 9.1(2020).