The iCIABC21 held on December 20-21, 2021, aimed to provide a platform for industry and academia to exchange information on the most recent findings and developments in the fields of science and technology. Knowledge and technological preparedness are critical for the long-term sustainability of the Fourth Industrial Revolution (Industry 4.0). The iCIABC brings together researchers, academicians and industry worldwide to exchange ideas, advance knowledge and discuss key issues for industrial material biotechnology and chemistry-related fields. This edition highlights particular areas of promising technological development and supports the unifying themes of the advancement of industry and society. It is devoted to analysing existing and creating new technologies in environmental protection, pharmacology, bioprocessing and chemical production. The main accent is the application of bio-based materials and bio substances in these processes. This book will be helpful to many chemical engineers and technologists from biotechnical and chemical production and pharmacology as well as environmental engineering specialists.