SUSTER is a fast growing process development company that was established in 2016

Who we are

Our team of researchers and consultants has gained ample experience in industrial and academic research. With our knowledge, extensive network and facilities we are your partner in process development. Contact us to find out what we can offer to your business.

“The optimal process is a safe process with minimal impact on the environment and minimal consumption of non-renewable fuels and raw materials.”

Creative in process technology

In everyday’s business there is often no opportunity to reconsider or optimize your current process. A fresh pair of eyes from one of SUSTER’s consultants might broaden the view of your team and lead to new insights and ultimately a more sustainable and profitable process.

“We offer R&D and consultancy services to process industries sizing from SME’s to multinationals that all benefit from our infrastructure, facilities and extensive experience and know-how.

Practical experience and the newest knowledge combined

Most researchers and consultants within SUSTER are alumni of the University of Twente from whom we rent most of our facilities. We have close ties with the Sustainable Process Technology group headed by professor Sascha Kersten who is one of the owners of SUSTER. This offers our clients the possibility to ask for further academic deepening when needed, e.g. by initiating a PhD project. The combination of ample industrial experience with the newest academic knowledge results in a creative and dynamic environment from which you will benefit.


Bert Heesink PhD

Managing Director / Consultant

Graduated in 1985 in Chemical Engineering at the University of Twente and obtained his PhD on High temperature coalgas desulphurization in 1994. Has more than 20 years of experience in industry, of which 10 years in R&D Management, and 15 years in academics. Proud father of 3 daughters. Loves traveling, motor cycling, reading, cooking and debating.

Sascha Kersten PhD

Principal Researcher

Studied Chemical Engineering at the University of Amsterdam. Wrote his PhD thesis on Biomass gasification in circulating fluidized beds at the University of Twente. There, Sascha was appointed full professor in Sustainable Process Technology in 2011. Since 2018 scientific director of ISPT, the Dutch Institute of Sustainable Process Technology.

Roel Westerhof PhD

Principal Researcher

Graduated in Chemical Engineering in 2007 at the University of Twente. Obtained his PhD on Refining fast pyrolysis of biomass in 2011. Has worked on several academic and industrial R&D projects on conversion of renewable resources for the production of fuels and chemicals in Canada, USA and Australia.

Wim Brilman PhD


Graduated as Chemical Engineer at the University of Twente (UT) in 1991 and became a certified Process Design Engineer in 1993. Obtained his PhD in 1998 on mass transfer and chemical reaction in gas-liquid-liquid systems. From 2001-2008 he worked for Sasol Ltd. on Fischer-Tropsch reactor technology. In 2008, he rejoined UT working on renewable fuels and chemicals from biomass and CO2. In 2020 he was appointed full professor on Carbon Capture and Conversion.

Lars Polleman BSc


Graduated in Chemical Engineering at the Saxion University of Applied on the subject Hydrothermal liquefaction of lignocellulosic biomass. Has relevant work experience at water treatment plants. Loves to hike, mountainbike and doing all kinds of technical hobbies.

Erik verbeek

Lead Technician

Passionate and creative technician. Well qualified, with twenty years of experience in an R&D environment, of which 10 years as a lead technician. Has a great interest in diving and underwater photography.

Robbie Verbeek

Technician / Research Assistant

Originally working as a cook, Robbie started working parttime as a technician and welder. Is very motivated to learn all the additional skills from his father Erik.

Bert Koning PhD

Principle Researcher

Studied Chemical Engineering Technology at the University of Twente. Wrote his PhD thesis on heat and mass transport in bed reactors at the University of Twente. After his graduation, he worked at different companies in various process engineering roles across the world. Specialist in Fischer Tropsch synthesis and coal gasification.

Jelle Nijland

IT Specialist

Known by his family as the wizzkid, Jelle really enjoys helping people and solving complicated computer problems which he does so for SUSTER. Studies Technical Computer Sciences at the University of Twente.

Niels Turkstra MSc


Graduated in Chemical Engineering at the Hanze University of Applied Sciences in 2015 and obtained his master’s at the University of Twente in 2021 on the subject of producing ethylene from methane in the Pulsed Compression Reactor. Worked for a few years in an industrial process environment in between studies and has experience from internships at DNV-GL, Engie, and Sasol. Interested in cycling, traveling, and occasional beer brewing.

Joey Ten Barge


Graduated in Chemical Engineering in 2021 at Saxion University of Applied Sciences on the topic Hydrothermal liquefaction of biomass. Has work experience at a water treatment plant. Is eager to learn and loves to read and play tennis.