Bioconversion efficiencies, greenhouse gas and ammonia emissions during black soldier fly rearing – A mass balance approach
| Autor: | Walter J. J. Gerrits, Alejandro Parodi, J. Elizabeth Bolhuis, Joop J. A. van Loon, Jeroen van Schelt, Hannah H. E. van Zanten, M.J.W. Heetkamp, Imke J.M. de Boer |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Bioconversion
Hermetia illucens Animal Nutrition Nitrogen 020209 energy Strategy and Management Biomass chemistry.chemical_element 02 engineering and technology Industrial and Manufacturing Engineering Animal Production Systems Ammonia chemistry.chemical_compound Nutrient 0202 electrical engineering electronic engineering information engineering Laboratory of Entomology Adaptatiefysiologie 0505 law General Environmental Science Dierlijke Productiesystemen biology Renewable Energy Sustainability and the Environment 05 social sciences Pulp and paper industry biology.organism_classification Laboratorium voor Entomologie Diervoeding chemistry Biofuel Emissions Greenhouse gas 050501 criminology WIAS Environmental science Adaptation Physiology GHG EPS |
| Zdroj: | Journal of Cleaner Production 271 (2020) Journal of Cleaner Production, 271 |
| ISSN: | 0959-6526 |
| Popis: | Black soldier fly larvae (BSFL) are acknowledged for their potential to upcycle waste biomass into animal feed, human food or biofuels. To ensure sustainable BSFL rearing, insight into nutrient bioconversion efficiencies and nutrient losses via gaseous emissions is key. This study used a mass balance approach to quantify nutrient bioconversion efficiencies (i.e., carbon, energy, nitrogen, phosphorus and potassium) and gaseous emissions (i.e., greenhouse gasses and ammonia) of BSFL reared on a substrate used in industrial production. On this substrate, bioconversion efficiencies ranged from 14% (potassium) to 38% (nitrogen). The proportion of dietary inputs found in the residues ranged from 55% (energy) to 86% (potassium), while the proportion of dietary inputs lost via gaseous emissions ranged from 1% (nitrogen) to 24% (carbon). Direct emissions of methane and nitrous oxide during rearing were 16.8 ± 8.6 g CO2-equivalents per kg of dry BSFL biomass. Even though ammonia emissions were minimal, these could have been avoided if larvae would have been harvested before the CO2 peak was reached. Our results provide the first complete mass balance and comprehensive quantification of BSF larval metabolism and GHG emissions, required to assess and improve the environmental sustainability of BSFL production systems. |
| Databáze: | OpenAIRE |
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