Green chemistry is a field of chemistry and chemical engineering that deals with the designing of products. It focuses on the processes that eliminate the use and production of harmful substances. Green chemistry is concerned with the environmental impacts of chemistry. It uses technology to prevent pollution and reduce the consumption of non-renewable resources. The goals of green chemistry include making the designing of molecules, products, materials and processes more resource efficient and safe. There are various principles of green chemistry that address different ways to eliminate the environmental and health impacts of chemical production. It aims to produce less waste, avoid using substances that are toxic to humans and the environment and minimize the energy requirements. This book contains some path-breaking studies in the field of green chemistry. It presents researches and studies performed by experts across the globe. This book will help the readers in keeping pace with the rapid changes in this field.