High waste-to-biomass conversion and efficient Salmonella spp. reduction using black soldier fly for waste recycling

By C. Lalander, J. Fidjeland, S. Diener, S. Eriksson, B. Vinnerås. Agronomy for Sustainable Development, 2014

343 citations recorded by the source corpus.

The recycling of organic waste worldwide is not effective, which leads to water pollution and loss of potential crop fertilizers. Available resources have to be used more efficiently as the world population increases. An innovative solution is to use insects for the management of organic waste. Here, we used black soldier fly to convert organic waste into animal feed protein, as fly larvae, and plant fertilizer, as compost residue. A continuous fly reactor was monitored for 9 weeks. We analyzed physicochemical and microbial parameters, and we evaluated the sanitary risk. Results show 55.1 % of material degradation and 11.8 % of biomass conversion based upon total solids. We observed higher levels of N and P in the treatment residue than in the inflow material. Results also show a lower concentration of Salmonella spp. and viruses. Compost treatment with black soldier fly is therefore an efficient system for nutrient recycling.

Subfields: Insect Science

View Paper: https://www.semanticscholar.org/paper/ae1fdbc3394755b68e0ce50d574efe6eb5434bcc

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In Insect Science

1. Yu-shiang Wang
2. Matan Shelomi
3. V. Varelas
4. C. Zurbrügg
5. S. Diener
6. B. Vinnerås
7. C. Lalander
8. I. D. de Boer

Citations in the corpus

• Food Wastes as a Potential new Source for Edible Insect Mass Production for Food and Feed: A review (2019, background): “On the other hand, this biomaterial comprises a huge nutrient stock [26] and could be valorized through biodegradation by various edible insect species in a mass production system [9,27,28].”
• Risk profile related to production and consumption of insects as food and feed (2015, methodology): “At various times after inoculation, the fermented manure/faeces was dried at 105 °C) for 14 h and stored at -70 °C until analysis (Lalander et al., 2015).”
• Review of Black Soldier Fly (Hermetia illucens) as Animal Feed and Human Food (2017, background): “BSFL have been noted to reduce the microbial load of substrates, with processed composts showing lower concentrations of bacteriophages and bacteria such as Salmonella enteritidis and Enterococcus coli [54,63,115].”
• Bioconversion efficiencies, greenhouse gas and ammonia emissions during black soldier fly rearing – A mass balance approach (2020, background): “…et al., 2018; Li le under the CC BY license (http://creativecommons.org/licenses/by/4.0/). et al., 2011; Myers et al., 2008; Xiao et al., 2018a), vegetable waste (Diener et al., 2011; Lalander et al., 2014; Parra Paz et al., 2015; Spranghers et al., 2016), and sludge (Lalander et al., 2019).”
• Effects of feedstock on larval development and process efficiency in waste treatment with black soldier fly (Hermetia illucens) (2019, methodology): “This varies with the nature of input materials and may range from as little as 3% for biogas digestate to 23% on awet-weight basis when working with fresh human excreta (Banks et al., 2014; Lalander et al., 2015; Newton et al., 2005; Spranghers et al., 2016).”