Manure as a Resource for Energy and Nutrients

Sigurnjak, Ivona; Poucke, Reinhart Van; Vaneeckhaute, Céline; Michels, Evi; Meers, Erik

doi:10.1002/9781118921487.ch3-1

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…Based on 10 performance criteria, they concluded that struvite precipitation performs as the second best (after gas permeable membrane technology) in terms of recovery performance, operating conditions, and the amount of chemical and energy requirements (Munasinghe‐Arachchige and Nirmalakhandan 2020). Several other researchers recommended the implementation of struvite precipitation technology for both nutrient recovery and waste management practices due to its relatively low cost and high performance (Vaneeckhaute et al 2017; Macura et al 2019; Sigurnjak et al 2020; Zangarini et al 2020).…”

Section: Resultsmentioning

confidence: 99%

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Temizel-Sekeryan

Hicks

2020

Integr Envir Assess & Manag

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Recovering valuable nutrients (e.g., P and N) from waste materials has been extensively investigated at the laboratory scale. Although it has been shown that struvite precipitation from several manure sources contributes to nutrient management practices by recovering valuable nutrients and preventing them from reaching water bodies, it has not been widely applied in commercial (i.e., farm) scales. The purpose of this study is to evaluate the potential environmental impacts of the struvite recovery process from the liquid portion of the anaerobically digested dairy cow manure generated in Wisconsin, USA, dairy farms using life cycle assessment methodology for both bench-and farm-scale scenarios. The struvite precipitation process involves the use of additional chemicals and energy; therefore, investigating upstream impacts is crucial to evaluate the environmental costs and benefits of this additional treatment process. Results indicate that up to a 78% impact decrease in eutrophication potential can be achieved when P and N are recovered in the form of struvite and are applied in lieu of conventional fertilizers, rather than using the liquid portion of the anaerobically digested dairy manure as a fertilizer. Additionally, significant differences are identified in the majority of environmental impact categories when the struvite precipitation process is modeled and evaluated in a farm-scale setting. Future work should expand to evaluate the overall environmental impacts and trade-offs of struvite recovery application, including the anaerobic digestion system itself at the farm scale.

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Section: Resultsmentioning

confidence: 99%

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Temizel-Sekeryan

Hicks

2020

Integr Envir Assess & Manag

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“…However, during digestion, dry matter is reduced, resulting in increased P and heavy metal concentrations in the digestate. Only easily degradable organic matter is decomposed, while complex substances such as lignin, remain in the digestate [145]. The high content of organic substances resistant to rapid degradation, which are found in the products of anaerobic digestion, promotes the formation of caries.…”

Section: Ecological Potential Of Digestatementioning

confidence: 99%

Possibilities and Limitations of Anaerobic Co-Digestion of Animal Manure—A Critical Review

2023

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Anaerobic digestion is a well-known and long-used biological method for stabilizing organic materials. Among the benefits of this process in waste management are the reduction of greenhouse gases, the production of alternative energy, and the acquisition of valuable digestate that can be used in the form of biogas, thereby closing the cycle of elements in nature. For some materials, such as manure, which is heterogeneous in terms of morphology and chemical composition, digestion of a single substrate may not be very efficient. Therefore, more and more studies on the co-digestion process are appearing in the literature. This solution allows higher biogas production and the possibility of processing several wastes simultaneously. The prospect of the future effective application of anaerobic co-digestion depends on regulations, work regime, and access to raw materials. Therefore, there is a need to systematize the available knowledge and results, as well as to identify the possibilities and limitations of the discussed process, which is undertaken in this paper.

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“…What about the use of manure as feed? Ammonia and nitrate loss from animal excretion leads in several countries of Europe to detrimental effects on the environment (Sigurnjak et al 2020). This can be mediated by using manure to produce energy or by recovering the nutrients (IPIFF 2022).…”

Section: Food Safety and Legislationmentioning

confidence: 99%

Edible insects: Challenges and prospects

Huis

2022

Entomological Research

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An overview is given on recent developments in insects as food and food by reviewing the literature which has appeared during the last few years on edible insects. An outlook to the future is provided. About a decade ago, the attention shifted from harvesting insects in the tropics to farming insects all over the world for food and feed applications. Most production is targeted towards pet food, but it will turn to aquafeed in the next two decades. More than 80% of all publications dealing with edible insects appeared during the last five years. Crickets and mealworms are used for human food while the black soldier fly is the main species used as animal feed. The criteria to choose insect species are automation, cheap substrates, disease avoidance, and market potential. Genetics are increasingly explored to improve production. The environmental impact of producing insects compares well to other alternative proteins, in particular their capacity to degrade organic waste streams. Edible insects are not only a good source of nutrients but also seem to provide health benefits not only for humans and animals, but also for plants (left over substrate). The challenge of convincing Western consumers is reviewed and whether sustainability is an issue. Processing techniques are being developed. The sector of insects as food and feed is developing fast thanks to an increasingly conducive legislative framework. It will progress further, provided that the insect industry, academia, governmental organizations, and public society closely cooperate.

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Manure as a Resource for Energy and Nutrients

Cited by 7 publications

References 35 publications

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Life Cycle Assessment of Struvite Precipitation from Anaerobically Digested Dairy Manure: A Wisconsin Perspective

Possibilities and Limitations of Anaerobic Co-Digestion of Animal Manure—A Critical Review

Edible insects: Challenges and prospects

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