This contributed volume compiles the latest developments in the field of microbial enzymology. It focuses on topics such as distribution of microbial enzymes in natural habitats, microbial enzymes in environmental sustainability, and environmental disturbances on microbial enzymes, which are organized into three parts, respectively. Ranging from micro-scale studies to macro, it covers a huge domain of microbial enzymes and their interplay between the components of the environment. Overall, the book portrays the importance of microbial enzyme technology and its role in solving the problems in modern-day life. The book is a ready reference for practicing students and researchers in environmental engineering, chemical engineering, agricultural engineering, and other allied fields.