The book "Thermodynamics and mass exchange in the processes of fine separation in countercurrent columns" by Sergey Alexandrovich Cherednichenko is a unique and in-depth study devoted to topical issues of thermodynamics and mass exchange in the field of chemical technology. This publication will be an indispensable tool for both students and graduate students of technical universities, and for specialists working in the field of chemical and petrochemical industry. From the first pages of the book, the reader plunges into the world of complex but fascinating processes occurring in counter-current columns. The author masterfully explains how thermodynamic principles affect the efficiency of separation of components in different systems. Cherednichenko not only describes the theoretical foundations, but also supports them with practical examples, which makes the material accessible and understandable. This book will be of interest to those who want a deeper understanding of how separation technologies work, and what factors influence their effectiveness. The book covers a wide range of topics, including the basics of thermodynamics, features of mass exchange, as well as various aspects of the design and optimization of separation processes. Cherednichenko pays special attention to mathematical models that allow predicting the behavior of systems and improving their performance. The reader will be able to learn about modern methods and approaches used in the industry, which makes this work relevant and useful for practical application. This book will be especially interesting for students studying chemical technology, as well as graduate students and young scientists who want to deepen their knowledge in the field of thermodynamics and mass exchange. Specialists working in the field of design and operation of chemical plants will find in it useful information that will help them in solving practical problems. Cherednichenko, having a rich experience in his field, shares his knowledge with readers, which makes his work a valuable source of information. The style of the author is distinguished by clarity and logical presentation, which makes it easy to assimilate even the most complex topics. Cherednichenko actively uses graphs and diagrams, which helps to visualize processes and makes the material more visual. His approach to learning and knowledge transfer deserves special attention, because he skillfully combines theory with practice, which makes the book not only scientific, but also practically useful. The book "Thermodynamics and mass exchange in the processes of fine separation in countercurrent columns" can become the basis for further study and research in the field of chemical technology. It opens the door to the world of complex processes that are behind the production of many of our usual products. Cherednichenko, as an author, has already established himself in scientific circles, and his work on thermodynamics and mass exchange are respected. If you are looking for a deep and meaningful study that will help you understand the intricacies of separation processes, this book will become your reliable companion. It will not only expand your knowledge, but also inspire new ideas and projects in the field of chemical technology. Do not miss the opportunity to plunge into the world of thermodynamics and mass exchange, which opens before you this wonderful work of Sergei Alexandrovich Cherednichenko.