In 1910, H.P. Gillette wrote : Engineering is the conscious application of science to the problems of economic production. Chemical engineering largely involves the design, improvement and maintenance of processes related to chemical or biological transformations in order to be applied to large-scale manufacture. Chemical engineers ensure the process are operating safely, sustainably and economically. Chemical engineers in this branch are usually employed under the title of process engineers. The field of chemical engineering was conveniently divided into two large categories : the unit operations that involve physical transformations and unit process that involve chemical changes. However, over the last twenty years we have assisted to an expansion of the chemical engineer action to new fields of science, in particular related with production and synthesis of new materials, not only at macroscopical scale but also at nanometric scale, being more than expectable that the chemical engineering will have a decisive role in the development of new emerging areas of knowledge. On that arises repeatedly is diversification and increased specialization we are now undergoing. A wide variety of problems and issues are considered in this book. Current Trends in Chemical Engineering is an d essential reading for postgraduates, PhD students and academic researchers working in chemical or process engineering, especially in the areas of fluid mechanics, particle science and biotechnology, food chemistry, nanotechnology, fuel cells, transport phenomena and computational fluid dynamics. The information presented in the book is also useful for the continuous education of professional engineers working in industries involving chemical process. Unlike extensive major reference works or handbooks. Current Trends in Chemical Engineering provides readers with a ready-reference to latest developments about important research in some selected areas of chemical engineering. The book is divided in eleven chapters that intend to be a short monograph in which the authors summarize the current state of knowledge for benefit of professional colleagues.