Kretsloppsteknik – Page 57 – Blog from the Environmental Engineering Research Group at SLU

The Krestloppsteknik Newsletter!

Published 29 October, 2018
By Prithvi Simha

Dear Reader,

Hejsan! Thank you for visting our blog and for your (continued) interest in our research group’s activites. The Kretsloppsteknik Blog has been an active newsharing platform at SLU since March 2017. The blog has been an excellent tool for us to communicate with you, helping us disseminate results, updates, and information about our group’s research and educational activities. We now offer the blog in both English as well as Swedish.

Now, we have decided to launch a monthly newsletter. This e-newsletter will serve to summarise all the blogs posted over the previous month and delivered by email. Starting this month, the newsletter is being sent out to our research network.

If you would like to subscribe to this newsletter, please get in touch with us at kretsloppsteknik@slu.se or access this link.

If you do not wish to receive further emails from us, you can always unsubscribe. We will promptly remove you from our email list.

To see previous issues of the newsletter, check out our archive page. We hope you enjoy reading it!

– The Krestloppsteknik Research Group

What larvae need

Published 18 October, 2018
By Prithvi Simha

In our study just published in Journal of Cleaner Production we were interested in finding out what how the larval feedstock affect the efficiency of the black soldier fly larvae (BSFL) composting process in terms of biomass conversion ratio, larval development and larval survival. We compared the process efficiency of nine different feedstocks and two control substrates and compared it to substrate properties, such as protein content and C/N ratio.We found that the substrate properties that had the largest impact on biomass conversion ratio and larval development was the daily larval feeding rate of organic material and proteins, while only the daily feeding rate of organic material impacted the final prepupal size. The feedstock found to be most promising for black soldier fly treatment were abattoir waste, a mixture of abattoir waste and fruit & vegetable waste, food waste and human faeces. The feedstock that did not show great promise (low biomass conversion ratio, long larval development time) were the sewage sludges and fruits & vegetable waste.

Björn Vinnerås besök på UTAR i Kampar Malaysia

Published 18 October, 2018
By Prithvi Simha

Jag har varit på Universiti Tunku Abdul Rahman som extern examinator vid fakulteten för ingenjörsvetenskap och grön teknik för att utvärdera deras magisterutbildning och doktorandutbildning i ingenjörsvetenskap. Där fick jag chansen att se en god struktur på deras utbildning och läsa om många intressanta projekt som genomförs på fakulteten. Bland deras projekt var det intressant att se Dr. Leong Siew Yoong projekt där hon använder fluglarvskompostering för att behandla avfall, med målet att producera biodiesel från fluglarverna. Under besöket fick jag även chansen att presentera min forskning vid ett seminarium för en grupp miljöteknikstudenter som hade många intressanta frågor.Gruppbild efter föreläsning på UTAR

Björn Vinnerås visits UTAR in Kampar, Malaysia

Published 18 October, 2018
By Prithvi Simha

Björn Vinnerås was at Universiti Tunku Abdul Rahman (UTAR) as External Examiner at the Faculty of Engineering and Green Technology to evaluate their Master of Engineering Science and PhD education in Engineering. He had the chance of looking at their interesting and good structure of their education and looking through several interesting projects that they are performing. Among all projects, it was interesting to see the Black Sodier fly project where Dr. Leong Siew Yoong was looking into the potential of using the lipids from the larvae to produce biodiesel. During the visit, Björn also gave a guest lecture for the Environmental Engineering students, with many interesting questions and discussions.Group picture after the lecture at UTAR

Nordisk insektproduktion diskuterad på en workshop i Danmark

Published 5 October, 2018
By Evgheni Ermolaev

Nordisk Insektworkshop med inriktning på utveckling av insektproduktion för foder och mat, organiserat av Danmarks tekniska universtitet (DTU) och Nordisk arbetsgrupp för mikrobiologi och djurhälsa och välfärd (NMDD), hölls i Roskilde, Danmark. Evgheni Ermolaev från vår grupp och Bettina Julin från Livsmedelsverket representerade Sverige vid mötet.

Nordic insect production discussed at a workshop in Denmark

Published 5 October, 2018
By Evgheni Ermolaev

Nordic Insect workshop focusing on development of insect production for feed and food was arranged by DTU and Nordic Working Group for Microbiology & Animal Health and Welfare (NMDD) In Roskilde, Denmark. Evgheni Ermolaev from our group and Bettina Julin from the Swedish National Food Agency represented Sweden at the meeting.

Finnish delegation visits SLU to discuss on-site urine treatment

Published 27 September, 2018
By Prithvi Simha

Last week our group hosted a delegation of stakeholders from Finland, representing between them the City of Tampere, The Finnish Environment Institute, The Global Dry Toilet Association of Finland and Tampere University of Applied Sciences. They were at SLU to discuss their ongoing projects, MORTTI – mobile nutrient recovery under field conditions and HIERAKKA – long-term effects of applying urine fertilizers. The project looks at identifying and piloting new solutions for the capture and utilisation of nutrients in urine and faeces. We thus discsussed the possibilities for on-site treatment of urine in Finland as well as potential collaboration for implementing urine drying technology at pilot study locations. This was followed by visits to our lab, where we have been running three household-scale urine drying systems & a tour of our black soldier fly composting colony. PC: Carl Willandt, Ekokumppanit Oy

Den finska delegationen besöker SLU för att diskutera urinbehandling på plats

Published 27 September, 2018
By Lovisa Lindberg

Förra veckan var vår grupp värd för en delegation av intressenter från Finland som företrädde Tammerfors stad, Finlands miljöinstitut, Finlands globala toalettförening och Tammerfors universitet för tillämpade vetenskaper. De var på SLU för att diskutera sina pågående projekt, MORTTI – mobil näringsåtervinning under fältförhållanden och HIERAKKA – långsiktiga effekter av applicering av uringödningsmedel. Projektet tittar på att identifiera och undersöka nya lösningar för fångst och användning av näringsämnen i urin och avföring. Vi diskuterade därmed möjligheterna till lokal behandling av urin i Finland samt potentiellt samarbete för att implementera urintorkningsteknologi vid pilotstudieplatser. Detta följdes av besök på vårt labb, där vi har kört tre urintorkningsystem i hushållsstorlek och en rundtur i vår komposteringsanläggning för kolonin av amerikanska vapenflugor.

Ett masterprojekt om fettsyresammansättningen av den amerikanska vapenflugans larver har påbörjats

Published 20 September, 2018
By Prithvi Simha

Jag heter Nils Ewald, och är en av de senaste tillskotten i Black Soldier Fly-gruppen på institutionen. Under hösten kommer jag göra mitt examensarbete som en avslutning på Agronomprogrammet i Livsmedelsvetenskap här på SLU. Som livsmedels-student känns det väldigt intressant att få arbeta med insekter som mat och foder, ett ämne som diskuterats flitigt på sistone. I mitt arbete kommer jag analysera fettsyror i fluglarverna, och det foder som vi ger dem (till exempel matrester). Målet är att se hur fettsyrorna i fodret påverkar fettsyrorna i fluglarverna.

New Masters project on fatty acid composition in BSF larvae and substrates

Published 20 September, 2018
By Prithvi Simha

I’m Nils Ewald, one of the latest master students to join the Black Soldier Fly team at the department. I’m currently doing my last year at the Agriculture program in Food Science here at SLU. As a student in food science it is very interesting to be able to dig into the widely discussed field of insects as food and feed. During the autumn I will investigate the fatty acid composition in the BSF larvae, as well as the substrates (such as food waste) they are reared upon. The aim is to see how the fatty acids found in different substrates affects the fatty acid composition in the fly larvae.