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challenge

Building cities of the future: harnessing new urban bioresources

Building cities of the future: harnessing new urban bioresources

Turn organic waste from a problem to a solution
Open for application

Our Challenge

Are you ready to tackle one of the most pressing environmental issues of our time? Join us in this challenge where we explore innovative ways to produce sustainable biofertilizers using biogas systems. Our focus is on reducing harmful substances called PFAs (Per- and Polyfluoroalkyl Substances) to ensure safer soils and a greener future. The challenge is offered in collaboration with Tomas Kjellquist, co-founder of Biototal, a leading company in Northern Europe’s circular bioeconomy. The challenge is open to students from all backgrounds, blending engineering, natural sciences, and social studies to develop cutting-edge solutions.

The Team

LS
Luka Safaric
Teamcher
MA
Mahmoud Abdelhamid
Teamcher
AP
Alex Enrich Prast
Teamcher
0 learners
Study format
Blended
Application period
10 December 2025 – 1 February 2026
Study period
23 February – 10 April 2026
Credits
5 ECTS
Hosting university
Linkoping University
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Learning outcomes

Communication skills

Communicate, orally and in writing, solutions to actors with diverse backgrounds and knowledge.

ESCO SKILLS

Generate solutions

Employ interdisciplinary perspectives on production and system integration of biogas and biofertilizer to develop realistic solutions to sustainable development challenges.

ESCO SKILLS

Problem identification

Identify and account for defined problems within predefined, broad, and reality-based challenges for sustainable development.

ESCO SKILLS

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Information

Our society is teeming with bioresources, such as various types of biomasses and organic waste, that often go underutilized. This challenge invites you to explore how we can turn these resources into high-quality biofertilizers while addressing one big obstacle: pollutants.

Anaerobic digestion is a powerful process for producing biogas and digestate, but the presence of PFAs in the digestate has raised concerns. These substances can limit the use of digestate as biofertilizer, leading to reduced soil health and circularity. Your challenge will be to examine the current landscape, identify barriers, and propose smart strategies to make digestate safer and more effective for biofertilizer production. More specifically, you will identify ways of dealing with digestate with relatively high amounts of PFAs, define strategies to minimize its presence in the biofertilizer, and propose concrete solutions for their presence in digestate.

Collaborate with industry experts from Biototal, engage in interdisciplinary research, and present your innovative solutions to stakeholders. This challenge-based learning experience promises to be both intellectually stimulating and practically impactful, driving sustainable development and helping the agriculture sector transition to a sustainable future.

The challenge includes a face-to-face (F2F) week at Linköping University (LiU) in Sweden. During the F2F week, you will get the opportunity to engage with some of the most advanced biogas and biofertilizer production systems in the world and with researchers in Biogas, biofertilizer and PFAs. You will interact directly with the challenge provider, visit state-of-the art biogas research facilities, and get a tour of a full-scale biogas plant at Tekniska Verken AB in Linköping.

Join us and be part of the solution!

Hosting university

Linkoping University

Linkoping University

Challenge provider

Biototal