Hi, our names are Ava & Evelina. We are two 17 year old girls in our final year studying Natural science (Naturvetenskap) at Rosendalsgymnasiet. For nearly three years we’ve been studying topics based around scientific subjects. Part of our studies consists of a scientific rapport, called a Gymnasiearbete (highschool diploma work), a requirement needed to graduate next summer. Throughout the next couple of weeks we’ll be doing laboratory work in the Department of Energy and Technology at SLU. We intend on focusing on the link between larvae and algae infected mussels from the Baltic Sea. We’ll be guided by Viktoria Wiklicky and Dr Cecilia Lalander who will help us in carrying out our studies.
Keeping a viable and productive Black Soldier Fly colony up and running can be hard sometimes, this is why it is great to have international relationships and colleagues to help you out when your colony needs to be replaced. Our Black Soldier Fly colleagues from Estonia picked up their new stock of larvae from SLU last week and finally also visited SLU facilities. The newest developments on both sides were discussed over lunch and after a tour through the (new) container based fly lab, larvae were sent off to their new home at the Estonian University of Life Sciences in Tartu.
Viktoria just returned from Benin which she visited in October to work together with colleagues from IITA at completing the goals of workpackage I + III in our VR funded project ‘Insect farming for feed production and organic waste management in Benin‘. Together they investigated and sampled waste streams from the south and the north of Benin and worked on improving the Black Soldier Fly colony at IITA, to secure a stable and high production of Black Soldier Fly larvae for future waste treatments. The visit was ended with a fruitful final discussion, where the gained knowledge and experience was shared with the rest of the work groups, both at SLU and IITA.
IITA, the International Institute of Tropical Agriculture, is a non-profit institution that generates agricultural innovations to meet Africa’s most pressing challenges of hunger, malnutrition, poverty, and natural resource degradation. Working with various partners across sub-Saharan Africa, they aim to improve livelihoods, enhance food and nutrition security while increasing employment, and preserve natural resources.
About the project:
The project is funded by VR (Vetenskapsrådet) and the objective is for Black Soldier Fly Farming to contribute to solving socio-economic and environmental issues in Benin by reducing the adverse impact of inadequate waste management, while at the same time improving agricultural productivity with locally sourced products.
Jennifer R. McConvillea, Elisabeth Kvarnströmb, Abdulhamid Aliahmada & Maria Lennartssonc
a Department of Energy and Technology, Swedish University of Agricultural Sciences, Uppsala, Sweden; firstname.lastname@example.org, Abdulhamid.email@example.com
b Ecoloop, Stockholm Sweden; firstname.lastname@example.org
c Research and Development Coordinator, City of Stockholm, Stockholm, Sweden; email@example.com
Source separation of excreta from the rest of urban wastewater flows can enable safe and efficient nutrient recovery. Yet, source-separating wastewater systems are not yet common in urban areas. The aim of this study is to assess the legitimacy of source-separating wastewater systems from the perspective of wastewater professionals in Sweden. The study uses interviews and a survey to explore the pragmatic, normative, cognitive and regulatory dimensions of legitimacy and how these aspects can vary between different municipalities. It also looks into possible knowledge-based activities to increase legitimacy. The results from this study show variations in legitimacy levels in urban areas in Sweden. Overall opinion appears to be neutral to the concept rather than negative. Although many see multiple barriers to implementation. Normative legitimacy (moral motivation) was relatively high, while cognitive legitimacy (knowledge & experiences) was lowest. Respondents from organizations where source-separation is being implemented, or they believe that it will be implemented within 10 years, generally saw more drivers and fewer barriers. These innovators were also more interested in knowledge-based activities. Overall recommendations to increase cognitive knowledge regarding source-separating systems among multiple stakeholders seems the most promising path forward to increase legitimacy in the Swedish wastewater sector.
Hello, my name is Nikos Gyftopoulos, I am from Greece, where I did my bachelors in Biology in the National Kapodistrian University of Athens, and now I am living in Uppsala.
I am doing my master’s programme in Applied Biotechnology at Uppsala University and I am presently doing my thesis in the Department of Energy and Technology of the Swedish University of Agricultural Sciences (SLU), with the Environmental Engineering Research Group. During the following months I intend to learn many aspects related to the bioconversion of organic wastes with black soldier fly larvae (Hermetia illucens, BSFL) and develop my thesis in this subject.
I will be supervised by Dr. Ivã Guidini Lopes and Dr. Cecilia Lalander, and the project we will develop together regards evaluations of the inactivation patterns of microbial pathogens during the bioconversion of contaminated post-consumer food waste.
Our latest publication on the dynamics of BSFL composting is just out in Waste management.
Around the world, many types of waste streams are (bio)converted with these insect larvae, and the treatment efficiency is dependent on the materials’ characteristics and rearing conditions. In this study, we evaluated the impact of these traits on the efficiency of this bioconversion.
We found out that the nutritional composition of waste is far from being the only factor that affect the efficiency of the bioconversion process. The number of larvae we add in one treatment unit impact on in the total yield of larval biomass (feed ingredient) up to a threshold at which point adding more seed larvae no longer increase the total yield of larval biomass. The depth and moisture of the biowaste was found to affect the larval survival and consequently, the overall process efficiency.
This study sheds light in how to establish several process parameters during waste treatment with BSFL, assisting waste managers and insect breeders on how to treat new waste streams with this insect larvae, promoting circularity in the sector.
Framtidens Bonde är en webbinarieserier som diskuterar framtidsbranscherna, de gröna näringarna. På tisdag den 12 september ska Cecilia Lalander från Kretsloppsteknikgruppen vara med och diskutera om Insekter kan skapa nya intäkter i jordbruket.
Two members of the Kretsloppsteknik’s BSF group will attend the INSECTA 2023 conference in Magdeburg, Germany, which is being organized by Pilot Pflanzenöltechnologie Magdeburg e.V. (PPM), on September 13-14th. Ivã Guidini Lopes and the PhD candidate Lovisa Lindberg will be presenting two ongoing studies on the topic of organic waste treatment with BSF larvae. Ivã will hold an oral presentation regarding the inactivation of pathogens by BSF larvae in a large-scale setting, entitled “Safety assessment of black soldier fly larvae reared on food waste” and Lovisa will present her recent findings on the bioconversion of greenhouse waste with BSF larvae, also as an oral presentation entitled “Practical adjustments in fly larvae composting when treating plant-based waste”. The complete program for the conference can be accessed by clicking here.
We are once again partnering up with a number of stakeholders all through the food production chain, from producers of residual streams, to insect producers, feed producers and farmers to wholesalers in the project The feed of the future for fish, pigs, poultry and laying hens (Framtidens foder för fågel fisk och fläsk, 5F), partially finansed by Vinnova. The project will test and evaluate several innovative feed ingredients, including for example insects, mycoprotein, and blue mussels from the Baltic Sea. The goal is to set up production with sales of pigs, fish, poultry, and eggs from laying hens that have been fed a low climate impact feed containing ingredients that benefit biodiversity. The project takes the results further from the pilot Five Tons of Green Fish which proved that it is possible to raise Swedish rainbow salmon with insect-based feed, which has up to 70% lower climate footprint than conventional feed. We will be the insect knowledge hub in the project.t.