The COST Action 18224 GREENERING is announcing the the 2nd GREENERING INTERNATIONAL CONFERENCE which will be held in Valladolid (Spain) from March 21-23, 2023. The conference, which has been co-organised by the COST Action GREENERING (Green Chemical Engineering Network towards upscaling sustainable processes) and BioEcoUVa (The Institute of Bioeconomy of University of Valladolid), has the objective to gather academics, researchers, and companies in an international forum to promote the application of green chemistry and sustainable technologies into industries with the environment, innovation, economy, and policy aspects in focus, covering a wide range of topics. The main topics tackled are: