This book summarizes the main results of the research conducted under the project "Sustainable Processes, Sustainable Systems, Sustainable Environment." The first part examines the distribution of phases in packed columns. The experimental studies provide information on the physical mechanism of formation and development of currents in the wall zone and along the height of the columns and are the basis for determining the optimal geometric configurations of the devices in the problem areas. The second part shows how the energy integration of the processes is carried out periodically production systems is a prerequisite for overcoming the impact of uncertain parameters and creating sustainable and energy-efficient production systems. The third part develops the idea of a sustainable environment for the production and distribution of first and second generation bioethanol through a balance between environmental, social, and economic goals.