Pig manure treatment with housefly (Musca domestica) rearing – an environmental life cycle assessment

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Title: Pig manure treatment with housefly (Musca domestica) rearing – an environmental life cycle assessment
Authors: Roffeis, M. | Muys, B. | Almeida, J. | Mathijs, E. | Achten, W.M.J. | Pastor Monllor, Berta | Velásquez Zambrano, Yelitza | Martínez-Sánchez, Anabel | Rojo, Santos
Research Group/s: Bionomía, Sistemática e Investigación Aplicada de Insectos Dípteros e Himenópteros
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales | Universidad de Alicante. Centro Iberoamericano de la Biodiversidad
Keywords: Life cycle design | Insect rearing | Pig production | Recycling | Sustainability
Knowledge Area: Zoología
Issue Date: 17-Aug-2015
Publisher: Wageningen Academic Publishers
Citation: Journal of Insects as Food and Feed. 2015, 1(3): 195-214. doi:10.3920/JIFF2014.0021
Abstract: The largest portion of a product’s environmental impacts and costs of manufacturing and use results from decisions taken in the conceptual design phase long before its market entry. To foster sustainable production patterns, applying life cycle assessment in the early product development stage is gaining importance. Following recent scientific studies on using dipteran fly species for waste management, this paper presents an assessment of two insect-based manure treatment systems. Considering the necessity of manure treatment in regions with concentrated animal operations, reducing excess manure volumes with the means of insects presents a potentially convenient method to combine waste reduction and nutrient recovery. An analytical comparison of rearing houseflies on fresh and pre-treated pig manure is reported with reference to agricultural land occupation, water and fossil depletion potential. Based on ex-ante modelled industrial scale rearing systems, the driving factors of performance and environmentally sensitive aspects of the rearing process have been assessed. Expressed per kg manure dry matter reduction, the estimated agricultural land occupation varied between 1.4 and 2.7 m2yr, fossil depletion potential ranged from 1.9 to 3.4 kgoil eq and the obtained water depletion potential was calculated from 36.4 to 65.6 m3. System improvement potential was identified for heating related energy usage and water consumption. The geographical context and the utility of the co-products, i.e. residue substrates and insect products, were determined as influential variables to the application potential of this novel manure treatment concept. The results of this study, applied at the earliest stages of the design of the process, assist evaluation of the feasibility of such a system and provide guidance for future research and development activities.
Sponsor: The research leading to these results has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 312084 (PROteINSECT).
URI: http://hdl.handle.net/10045/53087
ISSN: 2352-4588
DOI: 10.3920/JIFF2014.0021
Language: eng
Type: info:eu-repo/semantics/article
Rights: Creative Commons Attribution-NonCommercial-ShareAlike License 4.0
Peer Review: si
Publisher version: http://dx.doi.org/10.3920/JIFF2014.0021
Appears in Collections:INV - IBAI-DH - Artículos Científicos / Scientific Papers
Research funded by the EU

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