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Fredrik Nylén and Cajsa Hägglund
Fredrik Nylén and Cajsa Hägglund View original picture , opens in new tab/window

Meet Fredrik Nylén and Cajsa Hägglund

Published: 29 April 2021

We are two doctoral students in applied geochemistry and teachers in the Master Programme in Natural Resources Engineering.

Tell us a little about your background

"I took my master in Lund as a bedrock geologist. My geological career began as a prospector at Cementa. Then consulting at WSP with field investigations, where I learned, among other things, how to handle a 10 ton drilling rig. Then I got to try being a customer at the Swedish Transport Administration with a bit of mixed tasks, which then developed into an opportunity to try life as an industrial doctoral student", says Fredrik Nylén.

"I am a nature-loving amateur musician who took my master's degree in engineering at Luleå University of Technology in natural resource technology with a focus on the environment and water. Now I am returning home to northern Sweden after some exciting years in Dalarna as an environmental officer with supervision of polluted areas. When the chance came to further my education as a doctoral student, I could not miss it", says Cajsa Hägglund.

How can the students benefit from your research?

"Today, there is uncertainty among authorities, the industry and end users that sulphide-bearing rocks can be classified as unusable and / or regarded as waste by the authorities. When we had the opportunity to jump on our doctoral work to scientifically develop tools to be able to select inert rock material and rock that can be reused after improvement measures based on end use, none of us hesitated for a second", says Cajsa.

"More practically, my work is based on identifying the rock's geochemical properties, and then Cajsa takes over and categorizes how the material behaves by studying the rock mass changes over time. Together, we develop a way to be able to predict the kinetics of rock material instead of staring blindly at static parameters, which have proven to be unreliable. It is particularly important to emphasize that the new methods planned in the project will also be of great benefit to the industry in the future. This is also what made us want to solve the issue, as this is an issue that is currently haunting the entire industry. Not necessarily because the problem is as problematic as the public says, but because it is difficult to find a correct approach to understand the complexity. Imagine the feeling of knowing that this work will be able to be received by the infrastructure sector, applied and create the conditions to save costs large billions of taxpayers' resources. At the same time, it will enable a significant saving of virgin resources and a greatly reduced climate impact as a result of correct mass management. An advantage that must not be forgotten is the privilege of working with the absolute best people, both from a knowledge perspective but even more from a personal level", says Fredrik.

Do you have any advice for new students?

"An advice from us is that if you are interested in what happens at LTU in the research subjects that your programme covers. Take the opportunity to take a moment after a lesson or lecture and ask what the teacher is working on for exciting projects. Many want to tell about it", says Cajsa and Fredrik.

Fredrik Nylen

Fredrik Nylen, Industry-employed PhD Student

Organisation: Applied Geochemistry, Geosciences and Environmental Engineering, Department of Civil, Environmental and Natural Resources Engineering
Cajsa Hägglund

Cajsa Hägglund, PhD Student

Phone: +46 (0)920 491355
Organisation: Applied Geochemistry, Geosciences and Environmental Engineering, Department of Civil, Environmental and Natural Resources Engineering