Green Sustainable Process for Chemical and Environmental Eng Supercritical Carbon Dioxide as Green Solvent

"The extraction chapters focus primarily on applications of biological and bioactive compounds: extraction of catechins from green tea, lipids from algae, propolis, oleoresins and plant phenolics, essential oils, caffeine, and several chemicals from citrus, marigold, saffron, and other plants. The extended focus on extraction and purification of biological compounds is not surprising, since these materials tend to be very sensitive to temperature, making the comparative lower temperatures of SC-CO2 very attractive. The chapter on decaffeination is particularly well covered, probably given the fact that this extraction has been performed using SC-CO2 for quite a few years. The extraction chapters include an introduction of the relevance of the compounds extracted, short descriptions of the processes used, and advantages of using SC-CO2. These chapters also include several summary tables comparing different extraction methods, experimental conditions, alternative solvents, and types of extractions. The book chapters start from the premise that supercritical carbon dioxide is a "green” solvent. Although most chapters discuss disadvantages and limitations of using SC-CO2, they do not deeply cover sustainability metrics to evaluate the "greenness” of carbon dioxide as a solvent, including advantages and disadvantages. Chapter 11 on decaffeination is the only chapter to include a substantial discussion on environmental metrics such as life cycle assessment to evaluate the environmental profile of the supercritical carbon dioxide process. If readers are interested in evaluating the environmental profile of using SC-CO2 compared to other solvents, they will need to look for a different publication. I believe this book is useful as a technical reference of some applications of supercritical carbon dioxide and is particularly useful in supplying extraction scenarios. The list price is comparable to other books that belong to this type of reference material. This work is not structured as a textbook but could be useful as supporting material for graduate or senior classes covering green chemistry or engineering to offer students practical examples of industrial or research uses of supercritical carbon dioxide. However, this would need to be supported by other references that critically evaluate the environmental profile of using carbon dioxide compared to other alternatives using appropriate metrics." --ASEE

Dr. Inamuddin, is an Assistant professor at Department of Applied Chemistry, Zakir Husain College of Engineering and Technology, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, India. He has extensive research experience in multidisciplinary fields of analytical chemistry, materials chemistry, electrochemistry, renewable energy and environmental science. He has worked on different research projects funded by various government agencies and universities and is the recipient of awards, including the Fast-Track Young Scientist Award and young researcher of the year award-2020 of the university. His current research interests include ion exchange materials, a sensor for heavy metal ions, biofuel cells, supercapacitors and bending actuators.

Prof. Abdullah M. Asiri is the Head of the Chemistry Department at King Abdulaziz University since October 2009 and he is the founder and the Director of the Center of Excellence for Advanced Materials Research (CEAMR) since 2010 till date. He is the Professor of Organic Photochemistry. His research interest covers color chemistry, synthesis of novel photochromic and thermochromic systems, synthesis of novel coloring matters and dyeing of textiles, materials chemistry, nanochemistry and nanotechnology, polymers and plastics. A major achievement of Prof. Asiri is the discovery of tribochromic compounds, a class of compounds which change from slightly or colorless to deep colored when subjected to small pressure or when grind. This discovery was introduced to the scientific community as a new terminology published by IUPAC in 2000. This discovery was awarded a patent from European Patent office and from UK patent. He is also a member of the Editorial Board of various journals of international repute. He is the Vice- President of Saudi Chemical Society (Western Province Branch). He holds four USA patents, more than 800 Publications in international journals, seven book chapters, and ten books

Arun M. Isloor is a Fellow of Royal Society of Chemistry and serving as a Professor in the Department of Chemistry, National Institute of Technology Karnataka, India, since last 16 years. His research interests includes Membrane technology, Nanomaterials, Medicinal Chemistry & Polymer chemistry.