A Review on the Anaerobic Co-Digestion of Livestock Manures in the Context of Sustainable Waste Management

Rahul Kadam, Sangyeol Jo, Jonghwa Lee, Kamonwan Khanthong, Heewon Jang and Jungyu Park ()
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Rahul Kadam: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea
Sangyeol Jo: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea
Jonghwa Lee: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea
Kamonwan Khanthong: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea
Heewon Jang: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea
Jungyu Park: Department of Advanced Energy Engineering, Chosun University, Gwangju 61452, Republic of Korea

Energies, 2024, vol. 17, issue 3, 1-27

Abstract: As the worldwide demand for meat per person is continuously increasing, there is a corresponding rise in the number of livestock animals, leading to an increase in livestock manure. Selecting appropriate treatment technologies for livestock manures is still a complex task and considerable debates over this issue persist. To develop a more comprehensive understanding of the manure treatment framework, this review was undertaken to assess the most utilized manure management technologies and underscore their respective challenges. Anaerobic digestion has become a commercial reality for treating livestock manures. However, the mono-digestion of single substrates comes with certain drawbacks associated with manure characteristics. Anaerobic co-digestion, involving the utilization of multiple feedstocks, holds the potential to overcome these limitations. Extensive research and development have underscored numerous intrinsic benefits of co-digestion. These include improved digestibility resulting from the synergistic effects of co-substrates and enhanced process stability. This review underscores the limitations associated with the mono-digestion of livestock manures and critically evaluates the advantages of their co-digestion with carbon-rich substrates. Additionally, this review delves into key livestock manure management practices globally, emphasizing the significance of co-digesting livestock manures while addressing the progress and challenges in this field.

Keywords: anaerobic co-digestion; livestock manures; sustainability; synergistic effects; biogas (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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