News

Get to know us: Professor Olli Dahl

In this interview we got to know more about the professor of Environmental technology, Olli Dahl. He has spent his career working with environmental issues and strives to create jobs in companies. Let's hear more!
Olli smiling
Photo: Anni Hanén

What got you interested in Clean Technologies? 

I have always been interested in environmental issues, and nowadays also sustainability issues. I want to improve the already existing industrial processes and make them more environmentally friendly and sustainable. I also want to develop new industrial processes and make them sustainable to start with. Therefore, Clean Technologies felt like the right path for me.

What is the main goal of your research group?  

Our main goal is to plan and develop new processes to make sustainable products. We also develop wastewater treatment systems and try to reduce the consumption of fresh water in the process industry. Additionally, we recycle residuals from the process industry and make life-cycle-assessment calculations.

How will our society benefit from your research? 

I try to invest in research that creates something new and creates jobs for people. Companies that have been established from my research group are for example Toihan Ltd, which works with improving wastewater treatment process performance, and Nordic Bioproduct Group Ltd, which helps industries fight global warming with innovative bioproducts and bioproduction technologies. Some other spinoff companies, that are in the making, will be coming soon. These companies are my contribution to our society.

What is the most interesting thing you are working on right now? 

I’m now developing new applications for AaltoCell™. The focus is on that all fibers that are produced are edible. I have also created a new fertilizer in the RAKIKY-project which could replace the virgin NPK fertilizer. It’s produced from wood based fly ash and compost.

What part of your career have you liked the most?  

During my career, I have understood that there are many things that are required for the commercialization of inventions. Research is only one part in this value chain. It seems to me that the road from invention to business lasts 10 years. I think that that’s why I like this part of my career, right now. This is when I get to see my own hands work.

This interview is conducted by Mikaela Kumlin who has been working during the summer at the School of Chemical Engineering.

  • Updated:
  • Published:
Share
URL copied!

Read more news

Three people having a discussion at a table with laptops. Text: Visiting Professorships at TU Graz, October 1, 2026 - January 31, 2027.
Cooperation, Research & Art, Studies, University Published:

Apply Now: Unite! Visiting Professorships at TU Graz

TU Graz, Austria, invites experienced postdoctoral researchers to apply for two fully funded visiting professorships. The deadline for expressions of interest is 20 February 2026, and the positions will begin on 1 October 2026.

Rainbow colours gradient on the left. Outi Elina Kansanen in an armchair on the right.
University Published:

Outi Elina Kansanen leaves room for imperfections

In the 100 words series, the Development Manager at the School of Electrical Engineering shares how she has promoted equality, diversity and inclusion at Aalto
People seated in rows of chairs in a room with grey walls and tiled floor, some wearing coats and jackets.
University Published:

Adaptive Reuse Seminar in Cambridge, UK

Two-day seminar in Cambridge on adaptive reuse of Downing Site, with student proposals, expert talks, and site visit.
Two people carrying a sign with 'IT Services' written on it and a magnifying glass icon.
Studies, University Published:

Loan laptops available for students from IT Services for short-term use

Teachers can order laptops for students if needed.