91

News

Olli-Pekka Pentjärvi develops biorefining technologies: “With chemical engineering skills, I can influence industrial environmental issues.”

Studies in chemical engineering led Olli-Pekka Pentjärvi to launch a new biorefinery plant that produces bioethanol from bamboo to reduce transport emissions. Olli-Pekka's work is to scale biorefining technologies to an industrial scale. Chemical engineering provided Olli-Pekka with extensive tools and networks for solving industrial environmental issues.

How did you end up studying chemical engineering?

“I was interested in technology already as a child. I have always been quite resourceful: in my opinion, the most interesting thing has always been why and how things work.

In upper secondary school, I became worried about climate change and awakened by the impact that humans have on their environment. I realised the best place to impact environmental issues is at their source, in industrial production, for example. 

I was very interested, for example, in renewable energy, solar cells, green hydrogen and battery technology. When exploring different study options, I found that chemical engineering provided the best tools for developing new solutions to environmental production challenges.”

What was studying like?

"Studying was the best time of my life. The best things were the people and the community. Aalto University has an open atmosphere in which everyone is involved, and I was able to try my wings in various matters through the subject organisation and other associations.

In my studies, I particularly appreciated their broad scope and application possibilities. It was possible to select courses in a versatile manner and, already during my studies, I was able to apply what I have learned in work placements and cooperation projects with various companies. Exchange studies in China were also a great experience.”

What kind of work have you done in your career?

“During my studies, I completed several factory trainings in the manufacture of materials and industrial products, as well as in the development of industrial services. After my exchange studies, I also got a work placement at Metso-Outotec in China with the help of an Aalto University scholarship. I completed my master’s thesis in Pori on mineral enrichment technology, after which I got to develop a sales tool in sales support of the same company. After graduation, I became a process quality engineer in semiconductor technology and led several procurement projects in a factory expansion project. Next, I moved to Fortum as the operating manager for a biorefining project

Now I work at Chempolis, which develops biorefining technologies. I have managed to get to the forefront of scaling biorefining technologies to an industrial scale.

I support the launch of a biorefinery under construction in India and further develop technology for the processing of various raw materials and production of products, in cooperation with colleagues from the demo plant in Oulu.”

A person in a light blue shirt is standing indoors against a dark background with overhead lights.

The versatility of my education has enabled me to move between different sectors, from mineral beneficiation to energy and biorefining.

Olli-Pekka Pentjärvi

Why is your work important?

“The effects of my work will eventually be visible in many areas of life and many industries. I have an important position in the development of solutions for better and more environmentally friendly industrial production.

For example, in my current work, we aim to reduce industrial emissions by creating bio-based products from bio-based raw materials that replace the use of fossil raw materials. The plant under construction in India will produce bioethanol and various biochemicals from bamboo. Bioethanol reduces environmental impacts of local transport.”

What kind of skills did you gain by studying chemical engineering?

“On the one hand, chemical engineering provided me with skills in study and acquiring knowledge, and on the other hand, very broad-scale competence. My studies gave me the tools to influence the problem areas of traditional industries, which play an enormous role in the functioning of society. 

The versatility of the education has allowed me to change assignments according to my interest in different sectors, from mineral enrichment to semiconductor production, energy, and biorefining. The studies have also provided me with an extensive and skilled network that helps me solve problems that few people can solve alone. 

In all my work, I have been able to effectively apply what I have learned at Aalto, both in materials manufacture and in project management. In my career, I have had three-phase systems, washing and filtration systems, industrial water purification, combustion chemistry, corrosion, but also logistics, organisational management, and lean systems on my desk. Experimental activities and understanding of them have not ended with laboratory work in chemical engineering, but are still an important part of my current work.”

What would you like to say to young people considering their choices of study?

“Study choice is a big personal decision, so you should consider it carefully. If you want to make a difference, or explore and build something new for humanity, you should seek to study the skills and tools that you believe will best help you succeed. For me, natural sciences and the study path of materials science and engineering at Aalto School of Chemical Engineering were a clear choice in this respect. 

There is no need to solve major global problems alone – right skills and networks are useful.”

Chemical engineering solves the biggest problems of our time

School of Chemical Engineering combines natural sciences and engineering to refine research results and put them into practice as sustainable innovations.

Read more!
A group of chemical engineering students in front of the CHEM main building.
  • Updated:
  • Published:
Share
URL copied!

Read more news

Students during the Opening Ceremony of the Information Technology Program on June 2nd, 2025.
Studies, University Published:

Celebrating 30 Years of Innovation: Aalto University's Information Technology Program Turns 30

This summer, Aalto University’s Information Technology Program (ITP) celebrates its 30th anniversary. Founded in 1995, ITP is a full-time, three-month (30 ECTS) summer minor that brings together students from around the world and across disciplines.
Inventors Programme panel
Studies Published:

Turning Research into Impact: Insights from the Inventors Program Panel

Aalto University’s Inventors Program recently hosted a panel discussion bringing together experts from research, entrepreneurship, and industry to share their perspectives on turning scientific ideas into successful ventures.
Juha tekemässä vapaaehtoistyötä.
Studies Published:

"The spark for Chemical engineering was ignited" - An alumni's story from Otaniemi to working life

Juha Malinen, an alumn of the School of Chemical Engineering, warmly recounts his years at Otaniemi, the studies that supported his transition to working life and helped him find his place in building a more sustainable future.
Ville Jokinen
Appointments Published:

Ville Jokinen has been appointed to a fixed term Associate Professor position in the Department of Chemistry and Materials Science

Ph.D. Ville Jokinen has been appointed five-year fixed term Associate Professor position at the Department of Chemistry and Materials Science as of 1 June 2025. The field of the professorship is Microfabrication.