A new book on batch processing: Modeling and Design by Urmila Diwekar is out from CRC press. Batch processes are widely used in pharmaceutical, food, and specialty chemicals where high value, low volume products are manufactured. Recent developments in bio-based manufacturing also favor batch processes because feedvariations can be easily handled in batch processes. Further, the emerging area of nanomaterials manufacturing currently uses batch processes as they are low volume, high energy intensive processes. Design of these processes is difficult because of the time dependent nature of the process and the allowable flexibility. Although batch processing has existed for a long time, designing these processes and unit operations was an onerous task and required computational efforts. Therefore, traditional design books did not cover batch processing in detail. The aim of this book is to fill this void. The book describes various unit operations in batch and bio- processing and design methods for these units. Numerical methods are necessary to solve these design problems. The time dependent nature of batch processes result in challenging scheduling and planning problems. Further, every unit encounters optimal control problems. This book provides basics to solve these problems. The book is intended as a text as well as reference book for researchers and practitioners alike.