| Title: | "Pre-treatment of banana peel to improve composting by black soldier fly (Hermetia illucens (L.), Diptera: Stratiomyidae) larvae" |
| Author(s): | Isibika A; Vinneras B; Kibazohi O; Zurbrugg C; Lalander C; |
| Address: | "Department of Energy and Technology, Swedish University of Agricultural Sciences, Box 7032, 75007 Uppsala, Sweden; Department of Chemical and Mining Engineering, College of Engineering and Technology, University of Dar es Salaam, P.O. Box 35131, Dar es Salaam, Tanzania. Electronic address: alice.isibika@slu.se. Department of Energy and Technology, Swedish University of Agricultural Sciences, Box 7032, 75007 Uppsala, Sweden. Department of Chemical and Mining Engineering, College of Engineering and Technology, University of Dar es Salaam, P.O. Box 35131, Dar es Salaam, Tanzania. Eawag: Swiss Federal Institute of Aquatic Science and Technology, Uberlandstrasse 133, 8600 Dubendorf, Switzerland" |
| DOI: | 10.1016/j.wasman.2019.09.017 |
| ISSN/ISBN: | 1879-2456 (Electronic) 0956-053X (Linking) |
| Abstract: | "Use of black soldier fly (Hermetia illucens (L.), Diptera: Stratiomyidae) larvae (BSFL) is among the solutions being explored to shift the value chain in organic waste management by producing valuable products. Although BSFL consume a range of substrates, nutrient-imbalanced materials with high hemicellulose and lignin content, e.g. manure and banana peel, yield low conversion into larval biomass. This study explored pre-treatment methods to improve the nutrient composition and digestibility of banana peel to achieve higher substrate conversion into BSFL biomass. The pre-treatment methods evaluated were microbial, chemical (non-protein nitrogen), heat-based, and combinations of these. All pre-treatments tested except heating resulted in more efficient BSFL conversion in terms of final larvae weight. The low BSFL responses in pre-treatments were caused by the observed high amounts of tannins and phenolic compounds mainly from the heating pre-treatment. Waste to biomass conversion ratio correlated negatively with substrate volatile solids (VS) and positively with the decrease in VS in pre-treatment. Microbial - 14?ª+days pre-treatments provided the optimum pre-treatment time for the microorganisms to achieve maximum degradation of the substrates, facilitating larval assimilation of the released nutrients. Rhizopus oligosporus-14?ª+days and ammonia?ª++?ª+Rhizopus resulted in the most efficient BSFL treatment, measured as protein produced per kg incoming material" |
| Keywords: | Animals *Composting *Diptera Larva Manure *Musa *Simuliidae Eco-technologies Food industry waste Fruit peel Organic waste management Rhizopus oligosporus Trichoderma reesei; |
| Notes: | "MedlineIsibika, A Vinneras, B Kibazohi, O Zurbrugg, C Lalander, C eng 2019/09/21 Waste Manag. 2019 Dec; 100:151-160. doi: 10.1016/j.wasman.2019.09.017. Epub 2019 Sep 17" |
