Pretreatment of Animal Manure Biomass to Improve Biogas Production: A Review

Meneses-Quelal Orlando and Velázquez-Martí Borja
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Meneses-Quelal Orlando: Departamento de Ingeniería Rural y Agroalimentaria, Universitat Politècnica de València, 46022 Valencia, Spain
Velázquez-Martí Borja: Departamento de Ingeniería Rural y Agroalimentaria, Universitat Politècnica de València, 46022 Valencia, Spain

Energies, 2020, vol. 13, issue 14, 1-28

Abstract: The objective of this research is to present a review of the current technologies and pretreatments used in the fermentation of cow, pig and poultry manure. Pretreatment techniques were classified into physical, chemical, physicochemical, and biological groups. Various aspects of these different pretreatment approaches are discussed in this review. The advantages and disadvantages of its applicability are highlighted since the effects of pretreatments are complex and generally depend on the characteristics of the animal manure and the operational parameters. Biological pretreatments were shown to improve methane production from animal manure by 74%, chemical pretreatments by 45%, heat pretreatments by 41% and physical pretreatments by 30%. In general, pretreatments improve anaerobic digestion of the lignocellulosic content of animal manure and, therefore, increase methane yield.

Keywords: anaerobic digestion; biogas; degradation; lignocellulose; manure; pretreatments (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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