How can principles of thermodynamics, kinetics, and transport phenomena be effectively integrated to optimize chemical processes in engineering applications? Specifically, how do reactor design, separation techniques, and process control strategies contribute to the efficient production of chemicals while minimizing energy consumption and waste generation? Additionally, how do advances in catalysis and material science enhance reaction kinetics and selectivity? Considering the principles of sustainability, how can chemical engineers develop processes that are environmentally benign and economically viable? Moreover, how do computational tools like process simulation and molecular modeling aid in the design and optimization of chemical processes, ensuring their safety and scalability?