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Research article - Peer-reviewed, 2015

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

Lalander, Cecilia; Fidjeland, Jörgen; Diener, Stefan; Eriksson, Sara; Vinnerås, Björn

Abstract

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.

Keywords

Black soldier fly; Hygiene; Nutrient recycling; Protein production; Waste management

Published in

Agronomy for Sustainable Development
2015, volume: 35, number: 1, pages: 261-271

Authors' information

Swedish University of Agricultural Sciences, Department of Energy and Technology
Fidjeland, Jörgen
Swedish University of Agricultural Sciences, Department of Energy and Technology
Diener, Stefan
Eawag, Swiss Federal Institute of Aquatic Science and Technology
Eriksson, Sara
Swedish University of Agricultural Sciences, Department of Energy and Technology
Swedish University of Agricultural Sciences, Department of Energy and Technology

Sustainable Development Goals

SDG12 Ensure sustainable consumption and production patterns

UKÄ Subject classification

Other Environmental Engineering

Publication Identifiers

DOI: https://doi.org/10.1007/s13593-014-0235-4

URI (permanent link to this page)

https://res.slu.se/id/publ/66375