Advances in Dye Degradation: Volume 2 E-Book
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- Herausgeber: Bentham Science Publishers
- Kategorie: Wissenschaft und neue Technologien
- Serie: Advances in Dye Degradation
- Sprache: Englisch
This series provides information on the nature of dyes, their harmful effects, and dye degrading techniques. The second volume focuses on sophisticated oxidation methods for dye degradation. The information on target-oriented dye mitigation is intended to give readers a better understanding of the dye degradation process to sustain a healthy environment. Chapters present referenced information and highlight novel industry breakthroughs.
Key topics:
The Fenton process for dye removal
MOF-based and graphene oxide photocatalysts for dye degradation
Novel photocatalysts active in visible light and IR spectra
Photocatalytic degradation of transition metal dichalcogenides
Environment friendly synthesis of photocatalysts for dye degradation
Metal oxide Nanomaterials for dye degradation
This volume is a comprehensive singular resource on photocatalytic dye degradation for researchers, apprentices and learners in chemistry and chemical engineering courses. It also serves as a reference for industry professionals who work with chemical dyes (for example in textile and plastic industries) and are engaged in the critical field of environmental remediation.
Readership
Scholars in chemistry and chemical engineering; professionals in manufacturing industries and environmental sustainability.
Das E-Book können Sie in Legimi-Apps oder einer beliebigen App lesen, die das folgende Format unterstützen:
Seitenzahl: 278
Veröffentlichungsjahr: 2024
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FOREWORD
Regarding the environmental aspects, dye removal is more crucial. The “process” of eliminating dyes is just as significant because it has various economic and chemical effects. Degrading or removing dyes needs to be low-energy and safe for the environment. Once more, the process of chemical degradation will result in environmental hazards. High energy consumption will also result in environmental issues since there will be a greater energy demand. For this reason, the best method for meaningful dye degradation or removal will be to use reusable, effective materials that require less energy.
The editors in volume I have already covered basic aspects of dye degradation. In volume II, the editors address efficient degradation through light, a benign and sustainable energy source, and absorption for removing dyes. Given that the energy required for photochemical dye degradation is found in nature, this is an intriguing aspect of dye degradation. Numerous kinds of photocatalysts for dye degradation are covered in this book. Various materials for effective photodegradation are discussed in this volume. The relevant chapters justify the materials' suitability and go into great detail about their inherent qualities.
PREFACE
The environmental and economic perspectives create a need for dye degradation techniques. The fundamentals and importance of the dye degradation process were covered in “Advances in Dye Degradation,” volume I. In this volume, we have covered advanced oxidation techniques for degrading dyes. The Fenton process, a radical reaction, is used in Chapter 1 to degrade dyes. Radical production can break the dye materials into a safe byproduct when iron is present. The Fenton process can be combined with other processes, such as photochemical and electrochemical ones because it can be adjusted to produce a chain reaction that produces radicals. As a result, the Fenton process is among the most effective methods for degrading dyes.
The application of metal-organic frameworks to dye degradation is covered in Chapter 2. Metal-organic frameworks are porous materials whose synthetic pore modification allows for tuning the selectivity of these compounds. One of the key elements in the field of dye degradation is the application of electrocatalytic or photocatalytic degradation of these materials.
The photocatalytic materials active in the visible light and near-infrared regions of the electromagnetic spectrum are covered in Chapter 3. The band gap is the crucial factor for a successful photocatalyst. The ultimate goal of photocatalysis will be the utilization of solar light. As a result, the materials must absorb the entire spectrum of solar light's wavelengths. Nonetheless, there are several benefits to using NIR and the red region. This chapter provides a detailed discussion of the NIR active materials.
The photocatalytic degradation of transition metal dichalcogenides (TMDs) is covered in Chapter 4. The back combination of electrons and holes is the main element that lowers the degradation reaction's efficiency. Chalcogenides can, therefore, be used to create hybrid composites that inhibit the back combination process and yield beneficial outcomes in the degradation of dyes. The mechanism underlying each of these dye degradation processes is covered in this chapter.
The synthesis of photocatalysts for dye degradation is covered in Chapter 5. This chapter discusses the green synthetic approach of photocatalytic materials and their efficiency towards dye degradation since the production of photocatalysts should be benign. The use of metal oxide nanoparticles in dye degradation is covered in Chapter 6. The latest developments and trends regarding metal oxide nanoparticles and dye degradation are covered in this chapter.
The photocatalytic dye degradation employing graphene oxide composite materials is covered in Chapter 7. Effective conductive materials, such as graphene oxide, can control their electron injection by mixing it with materials that receive electron injection and synthetic modification to create composites. Because of these materials' high reusability, this chapter discusses their recent advantages. We hope that this volume will be helpful to both those working in the field and students who are about to enter it, as it starts with basic methods and provides information about advanced techniques.
List of Contributors
Fenton and Fenton-Like Processes for the Degradation of Dye in Aqueous Solution
R. Liju1,Eswaran Rajkumar1,*Abstract
Water is necessary for the growth of humans and all other living things. Water is becoming scarce due to industrialization and its rapid growth, and the water ecosystem is negatively impacted by the direct release of wastewater into the environment. The textile, tanning, coating, plastics, paint, printing, and other industries, discharge dyes and pigments into the environment. One major problem is to remove dyes and pigments from industrial wastewater in a inexpensive and environmentally friendly way. Before they are released into the environment, there are several ways to mitigate the situation, including chemical, biological, and chemical oxidation processes. The advanced oxidation process (AOP) is a widely employed technique for eliminating contaminants from water and wastewater. The dye molecules are broken down by a Fenton and Fenton-like mechanism, in which the breakdown of hydrogen peroxide produces hydroxyl radicals. This chapter focuses on the most current advancements and various strategies used in the Fenton and/or Fenton-like processes used to degrade the dye molecules.
