The Group [G2. Process and Environmental Engineering] focuses on the design, analysis and optimization of chemical processes targeting sustainable routes of production and environmental protection, and using the most modern approaches of mathematical modeling and Process Systems engineering (PSE). Advanced Environmental Technologies are at the heart of cutting-edge research on alternative strategies to conventional treatments of wastewater, gaseous emissions, and contaminated soil remediation to reach environmental sustainability. Water reuse, value-added products extraction, solid residues valorization (biofertilizers, adsorbents, catalysts, etc.), renewable energies and decarbonization, membrane and adsorptive technologies and public health protection are inward goals lined up with ongoing projects. Also, biological and chemical emerging contaminants spread on domestic water networks is also a stringent branch of our joined research. In this regard, PSE, which is a wide spectrum of modeling approaches is explored (first principles, data-driven and hybrid models) and model-based systematic methodologies are developed to support decision-making in a variety of product and process engineering problems (design and scale-up, supervision and control, optimization, intensification, decarbonization). More specific methodologies include rigorous modeling of multiphase and dispersed systems, logistics and network modeling, nonlinear model predictive control, hybrid and machine learning approaches for process improvement, namely in terms of environmental protection. Group activities are thus aligned with Circular Economy, Sustainability, and Digital Transformation concepts.