Conference article

Model selection for waste conversion efficiency and energy demands in a pilot for large-scale larvae treatment

Evgheni Ermolaev
Department of Energy and Technology, Swedish University of Agricultural Sciences (SLU), Sweden

Erik Dahlquist
Department of Energy, Building and Environment, Mälardalen University, Sweden

Cecilia Lalander
Department of Energy and Technology, Swedish University of Agricultural Sciences (SLU), Sweden

Björn Vinnerås
Department of Energy and Technology, Swedish University of Agricultural Sciences (SLU), Sweden

Eva Thorin
Department of Energy, Building and Environment, Mälardalen University, Sweden

Download articlehttps://doi.org/10.3384/ecp20170118

Published in: Proceedings of The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden

Linköping Electronic Conference Proceedings 170:18, s. 118-124

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Published: 2020-01-24

ISBN: 978-91-7929-897-5

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Implementations of conversion systems for segregated food waste into larval biomass are reliant on stability of production environment and predictable outcomes. However, the knowledge is currently lacking for large scale implementation modelling allowing to adjust the process for reaching a stable production quality and predicting the treatment capacity and output product quantity. This study contributed to the development of such knowledge and investigated models for prediction of larvae mass gain in the conversion process, food waste degradation due to larval and microbial activity, heat production based on metabolic activity in the conversion process. These models were used to evaluate the amount of heat produced and compared to the demand for water removal for achieving a minimal total solids content (50%) in the treatment residue for easy larvae separation by sieving. Based on these models’ predictions and measurements of the conversion efficiency it was established that, assuming no heat loss from the system, the heat generated by the process was sufficient to achieve a desirable total solids content in the residue after 14 days of treatment. An exponential heat production from waste degradation can be expected, and thus, for wetter food waste, the treatment period can be expanded to achieve the desired residue total solids content.

Keywords

black soldier fly, degradation, conversion, sieving, food waste, high water content

References

P.D. Bach, K. Nakasaki, M. Shoda, and H. Kubota. Thermal balance in composting operations. Journal of Fermentation Technology, 65(2): 199-209, 1987. doi: 10.1016/0385-6380 (87)90165-8.

J.Y.K. Cheng, S.L.H. Chiu, and I.M.C. Lo. Effects of moisture content of food waste on residue separation, larval growth and larval survival in black soldier fly bioconversion. Waste Management, 67: 315-323, 2017. doi: 10.1016/j.wasman.2017.05.046.

H. Cicková, G.L. Newton, R.C. Lacy, and M. Kozánek. The use of fly larvae for organic waste treatment. Waste Management, 35: 68-80, 2015. doi: 10.1016/j.wasman.2014.09.026.

S. Diener, N.M.S. Solano, F.R. Gutierrez, C. Zurbrugg, and K. Tockner. Biological Treatment of Municipal Organic Waste using Black Soldier Fly Larvae. Waste and Biomass Valorization, 2(4): 357-363, 2011. doi: 10.1007/s12649-011-9079-1.

B. Dortmans, S. Diener, B. Verstappen, and C. Zurbrügg. Black soldier fly biowaste processing: a step-by-step guide. Eawag, Sandec, Dübendorf, Switzerland, 2017.

N. Ewald. Fatty acid composition of black soldier fly larvae - impact of the rearing substrate. Master Thesis. Department of Energy and Technology, Swedish University of Agricultural Sciences, Uppsla, 2019.

H.V.M. Hamelers. Modeling composting kinetics: A review of approaches. Reviews in Environmental Science and Bio/ Technology, 3(4): 331-342, 2004. doi: 10.1007/s11157-004-2335-0

R.T. Haug. The Practical handbook of compost engineering. Lewis Publishers, Boca Raton, Florida, FL, USA, 1993. doi: 10.1201/9780203736234

P.J. He, L. Zhao, W. Zheng, D. Wu, and L.M. Shao. Energy Balance of a Biodrying Process for Organic Wastes of High Moisture Content: A Review. Drying Technology, 31(2): 132-145, 2013. doi: 10.1080/07373937.2012.693143.

IPIFF. The European Insect Sector Today: Challenges, Opportunities and Regulatory Landscape. IPIFF vision paper on the future of the insect sector towards 2030, IPIFF, 2018.

S. Johannesdottir. Uppskalning av fluglarvskompostering: Luftningsbehov och ventilation. Master Thesis. Department of Energy and Technology, Swedish University of Agricultural Sciences, Uppsla, 2017.

H. Keener, R. Hansen, and C. Marugg. Optimizing the efficiency of the composting process. In Proceedings of the International Composting Research Symposium. Renaissance Publications, Columbus, OH, 1992.

S.W. Kim, J.F. Less, L. Wang, T.H. Yan, et al. Meeting Global Feed Protein Demand: Challenge, Opportunity, and Strategy. Annual Review of Animal Biosciences, 7: 221-243, 2019. doi: 10.1146/annurev-animal-030117-014838.

K. Kubilay and K. Kucska. Energi och ventilation vid biomassaproduktion av larver: Optimering av ett ventilationssystem med hjälp av beräkningsmodell i Excel för containern i demoanläggningen, i Lilla Nyby. Master Thesis. School of Business, Society and Engineering, Mälardalen University, Västerås, 2018.

C. Lalander, S. Diener, C. Zurbrügg, and B. Vinnerås. Effects of feedstock on larval development and process efficiency in waste treatment with black soldier fly (Hermetia illucens). Journal of Cleaner Production, 208: 211-219, 2019. doi: 10.1016/j.jclepro.2018.10.017.

S.Y. Leong, S.R.M. Kutty, A. Malakahmad, and C.K. Tan. Feasibility study of biodiesel production using lipids of Hermetia illucens larva fed with organic waste. Waste Management, 47: 84-90, 2016. doi: 10.1016/j.wasman.2015.03.030.

Q. Li, L.Y. Zheng, H. Cai, E. Garza, et al. From organic waste to biodiesel: Black soldier fly, Hermetia illucens, makes it feasible. Fuel, 90(4): 1545-1548, 2011. doi: 10.1016/j.fuel.2010.11.016.

L. Lindberg. Utsläpp av växthusgaser och ammoniak under fluglarvskompostering. Master Thesis. Department of Earth Sciences, Uppsala University, Uppsala, 2018.

X. Liu, X. Chen, H. Wang, Q.Q. Yang, et al. Dynamic changes of nutrient composition throughout the entire life cycle of black soldier fly. PLoS One, 12(8), 2017. doi: 10.1371/journal.pone.0182601.

H.P.S. Makkar. Review: Feed demand landscape and implications of food-not feed strategy for food security and climate change. animal, 1-11, 2017. doi: 10.1017/S175173111700324X.

I.G. Mason. Predicting biodegradable volatile solids degradation profiles in the composting process. Waste Management, 29(2): 559-569, 2009. doi: 10.1016/j.wasman.2008.05.001,

A. Mertenat, S. Diener, and C. Zurbrügg. Black Soldier Fly biowaste treatment – Assessment of global warming potential. Waste Management, 84: 173-181, 2019. doi: 10.1016/j.wasman.2018.11.040.

S.-E. Mörtstedt and G. Hellsten. Data och diagram: energi- och kemitekniska tabeller. Esselte Studium, Stockholm, 1976.

B. Pastor, Y. Velasquez, P. Gobbi, and S. Rojo. Conversion of organic wastes into fly larval biomass: bottlenecks and challenges. Journal of Insects as Food and Feed, 1(3): 179-193, 2015. doi: 10.3920/ JIFF2014.0024. 

A.S.P. Paz, N.S. Carrejo, and C.H.G. Rodriguez. Effects of Larval Density and Feeding Rates on the Bioconversion of Vegetable Waste Using Black Soldier Fly Larvae Hermetia illucens (L.), (Diptera: Stratiomyidae). Waste and Biomass Valorization, 6(6): 1059-1065, 2015. doi: 10.1007/s12649-015-9418-8.

T. Spranghers, M. Ottoboni, C. Klootwijk, A. Ovyn, et al. Nutritional composition of black soldier fly (Hermetia illucens) prepupae reared on different organic waste substrates. Journal of the Science of Food and Agriculture, 97(8): 2594-2600, 2017. doi: 10.1002/jsfa.8081.

J.K. Tomberlin, P.H. Adler, and H.M. Myers. Development of the Black Soldier Fly (Diptera: Stratiomyidae) in Relation to Temperature. Environmental Entomology, 38(3): 930-934, 2009. doi: 10.1603/022.038.0347. 

A. Van Huis, J. Van Itterbeeck, H. Klunder, E. Mertens, et al. Edible insects: future prospects for food and feed security. Food and Agriculture Organization of the United Nations, 2013.

R.S. Wotton. Growth, Respiration, and Assimilation of Blackfly Larvae (Diptera Simuliidae) in a Lake-Outlet in Finland. Oecologia, 33(3): 279-290, 1978. doi: 10.1007/Bf00348114.

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