This book explores effective modelling and simulation approaches for solving equations. It provides a clear explanation of how to simplify complex processes at various levels with the help of a 'model sketch'. The second edition covers modelling of multi-stage processes and multi-stage, multi-phase systems with thermodynamic processes, including reactive distillation. Additionally, process intensification is introduced with modelling of electrochemical processes. A chapter on batch processes in filtration, adsorption, drying, distillation and batch reactors is included, backed by case studies. Presents a systematic approach of model development in view of the simulation needDiscusses modelling techniques to model hydrodynamics, mass and heat transfer, and reactors for single- as well as multi-stage/multi-phase systemsExplores diffusion based on Stefan–Maxwell theory, including principal component analysisReviews dynamics models covering process dynamicsIncludes enhanced case studies to illustrate simulations, including ANNThis book is aimed at senior undergraduate and graduate students in chemical, biochemical and environmental engineering.