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Boosting manure biogas production with the application of pretreatments: A meta-analysis

Anacleto, Thuane Mendes (author)
Univ Fed Rio de Janeiro, Brazil
Oliveira, Helena Rodrigues (author)
Univ Fed Rio de Janeiro, Brazil
Diniz, Vinicius Lacerda (author)
Univ Fed Rio de Janeiro, Brazil
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de Oliveira, Vinicius Peruzzi (author)
Univ Fed Rio de Janeiro, Brazil
Abreu, Fernanda (author)
Univ Fed Rio de Janeiro, Brazil
Enrich-Prast, Alex (author)
Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten,Biogas Solutions Research Center,Univ Fed Rio de Janeiro, Brazil; Fed Univ Sao Paulo IMar UNIFESP, Brazil
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 (creator_code:org_t)
Amsterdam, Netherlands : Elsevier, 2022
2022
English.
In: Journal of Cleaner Production. - Amsterdam, Netherlands : Elsevier. - 0959-6526 .- 1879-1786. ; 362
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Anaerobic digestion (AD) is a versatile manure management approach that can combine waste treatment, energy generation and nutrient recovery, thus playing a central role in circular economy. The AD process is highly influenced by manure composition which, depending on the source, may contain high loads recalcitrant materials (e.g., lignocellulosic and fibers) or lead to the formation of toxic compounds (e.g., NH3), decreasing the energetic potential of the waste and requiring specific pretreatments to increase its degradability and biogas production. Although there are distinctions in the chemical composition of manure according to animal diets, different manure sources are usually grouped together, leading to a suboptimal performance of both the pretreatment and the AD process. Here, we performed a meta-analysis of 54 studies to evaluate the effects of different pretreatments on different manure types and their effect on methane (CH4) yield and we estimated the energy potential if the appropriate pretreatment is applied to largest manure producing countries. The results showed that chemical and/or biological pretreatments were more effective for omnivore manure (e.g., swine, chicken), while physical and a combination of chemical and physical pretreatments negatively affected CH4 production. Physical and/or chemical pretreatments had a positive effect on CH4 yield from herbivore manure (e. g., cattle, horses), while biological pretreatments had a negative effect. The application of the adequate pretreatment can more than double the energy recovered from manure, allowing for an important substitution of fossil fuels, while decreasing operational costs and environmental risks and ultimately improving profitability. The development of pretreatment technologies and their application are strongly related to public policies for sustainable manure management and biogas use and production.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Naturresursteknik -- Energisystem (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Environmental Engineering -- Energy Systems (hsv//eng)

Keyword

Anaerobic digestion; Pretreatment; Manure; Biogas; Methane; Meta-analysis

Publication and Content Type

ref (subject category)
art (subject category)

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