Stock Photo - PRODUCTION - 05 April 2023, Hamburg: The two leading scientists of the research group ""Process Engineering"" at the Faculty of Life Sciences at HAW Hamburg, Anika Sievers (l-r) and Thomas Willner, and Thorsten Dunker, Managing Director of Nexxoil GmbH, stand in front of the reactor for the conversion of waste materials (used fats) in the pilot plant in the Process Engineering department at HAW's Life Sciences Campus. The pilot plant is designed to convert waste materials such as used fats and plastic waste into climate-neutral heavy oil-free petroleum substitute. The petroleum substitute (CVO Cracked Vegetable Oil) can be used to produce liquid fuels such as gasoline and diesel, as well as plastics and much more. Photo: Georg Wendt/dpa. - Hamburg/Hamburg/Germany