Research Progress and Analysis on Comprehensive Utilization of Livestock and Poultry Biogas Slurry as Agricultural Resources

Yue Jiang (), Yue Zhang and Hong Li
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Yue Jiang: Research Centre of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
Yue Zhang: Research Centre of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
Hong Li: Research Centre of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2023, vol. 13, issue 12, 1-17

Abstract: Anaerobic fermentation of organic waste, such as livestock manure, in biogas projects is an environmentally friendly and effective treatment method. The resulting biogas, mainly composed of methane, is a combustible gas with energy properties, while the digestate, containing nutrients such as nitrogen (N), phosphorus (P), potassium (K), and other organic matter, can be used for agricultural irrigation. This article analyzes the current situation of resource utilization of livestock manure in various countries and the progress of biogas projects. It introduces the process, composition, and commonly used filtration methods before applying the digestate to farmland. The summary focuses on the improvement of crop quality, enhancement of soil fertility and the risks of pollution, and environmental hazards associated with the utilization of biogas slurry. The limitations and corresponding solutions for the agricultural utilization of livestock digestate are discussed, and recommendations are made for the technology of digestate irrigation and application to farmland.

Keywords: agricultural application; anaerobic fermentation; biogas slurry; irrigation; poultry and livestock manure (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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