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## Meet the editor

Dr. George Z. Kyzas is a professor in the Department of Chemistry, International Hellenic University (IHU), Greece. He studied Chemistry at the Department of Chemistry, Aristotle University of Thessaloniki (AUTh), Greece. He obtained his BSc, MSc, and Ph.D. in Chemical Technology from the same university where he also worked as a postdoctoral researcher. He is now working at the Department of Chemistry, Inter-

national Hellenic University, Kavala, Greece, where he has been the head of the department since 2019. He is also the Director/Chair of the MSc in Cosmetic Chemistry. His research interests are the synthesis and characterization of various (majorly adsorbent) materials (inorganic, aluminates, polymers, graphenes, activated carbons, agro-food residues, nanomaterials, carbon nanotubes, etc.) for environmental applications (wastewaters treatment). Dr. Kyzas has published more than 220 scientific papers in international journals, 8 books, and 38 book chapters. He also holds three patents. He has been a guest editor for special journal issues and is the editor of Environmental Science and Pollution Research and is a reviewer for more than 200 other scientific journals. He has more than 120 announcements (invited) at international conferences. He was named in Stanford University's list of the World's Top 2% Scientists for 2019 and 2020. He has been awarded scholarships from the Research Committee of the Aristotle University of Thessaloniki (2009, 2013), the Greek State Scholarship Foundation (2013), and the Stavros Niarchos Foundation (2016). He has also participated in about twenty-five research projects.

### Contents


#### **Chapter 6 123**

Adsorption of Chromium from an Aqueous Solution onto Chitosan Beads Modified with Sodium Dodecyl Sulfate (SDS) *by Naoki Kano, Zou Ming, David Eva Vanessa Anak and Muhammad Nabil Md Sari*

## Preface

*Sorption - From Fundamentals to Applications* describes various aspects of the sorption technique. Sorption is a physical and chemical process by which one substance becomes attached to another. Specific cases of sorption include: (1) absorption, which is the incorporation of a substance in one state into another of a different state (e.g., liquids being absorbed by a solid or gases being absorbed by a liquid); (2) adsorption, which is the physical adherence or bonding of ions and molecules onto the surface of another phase (e.g., reagents adsorbed to a solid catalyst surface); and (3) ion-exchange, which is an exchange of ions between two electrolytes or between an electrolyte solution and a complex. At the beginning of the 21st century, separation processes presented a comprehensive application of the major operations performed by various industries, such as chemical, food, environmental, and biotechnology industries. Sorption, which is one of the preferred separation processes because of its effectiveness at different interfaces, has attracted the attention of many scientists. This book presents a comprehensive overview of sorption and its various applications, as well as discusses its functions and importance in chemical and biochemical plants, including environmental treatment. It is a useful reference for those who are interested in sorption techniques in various industries.

I am grateful to all the authors who have contributed their tremendous expertise to this project. I also wish to acknowledge IntechOpen publishing for their outstanding support throughout the publication of this book.

> **George Z. Kyzas (MSc, PhD)** Professor, Department of Chemistry, International Hellenic University, Kavala, Greece

## Acknowledgments

We acknowledge the support we received for this edited book from the Greek Ministry of Development and Investments (General Secretariat for Research and Technology) through the research project "Intergovernmental International Scientific and Technological Innovation-Cooperation. Joint declaration of Science and Technology Cooperation between China and Greece" with the topic "Development of monitoring and removal strategies of emerging micro-pollutants in wastewaters" (grant No. T7DKI-00220).

Section 1

Sorption in Biomass

**1**
