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Photocatalysis and Water Purification

Author: Pierre Pichat

Publisher: John Wiley & Sons

Published: 2013-03-26

Total Pages: 436

ISBN-13: 3527645411

Water is one of the essential resources on our planet. Therefore, fresh water and the recycling of waste-water are very important topics in various areas. Energy-saving green technologies are a demand in this area of research. Photocatalysis comprises a class of reactions which use a catalyst activated by light. These reactions include the decomposition of organic compounds into environmental friendly water and carbon dioxide, leading to interesting properties of surfaces covered with a photocatalyst: they protect e.g. against incrustation of fouling matter, they are self-cleaning, antibacterial and viricidal. Therefore, they are attractive candidates for environmental applications such as water purification and waste-water treatment. This book introduces scientists and engineers to the fundamentals of photocatalysis and enlightens the potentials of photocatalysis to increase water quality. Also, strategies to improve the photocatalytic efficacy are pointed out: synthesis of better photocatalysts, combination of photocatalysis with other technologies, and the proper design of photocatalytic reactors. Implementation of applications and a chapter on design approaches for photocatalytic reactors round off the book. 'Photocatalysis and Water Purification' is part of the series on Materials for Sustainable Energy and Development edited by Prof. G.Q. Max Lu. The series covers advances in materials science and innovation for renewable energy, clean use of fossil energy, and greenhouse gas mitigation and associated environmental technologies.

Heterogeneous Nanocomposite-Photocatalysis for Water Purification

Author: Rajendra Pawar

Publisher: William Andrew

Published: 2015-04-29

Total Pages: 113

ISBN-13: 0323393136

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In Heterogeneous Nanocomposite-Photocatalysis for Water Purification, the authors introduce various heterogeneous photocatalysts based on novel nanostructures of metal oxide semiconductors and graphene used for water purification, including TiO2, Fe2O3, SnO2, WO3 and g-C3N4, and outlines their advantages and drawbacks. The nanocomposite-photocatalysts ZnO and CdS are compared with reduced graphene oxide (rGO), a rapidly growing materials system. The authors describe how the photocatalytic activity of known nanomaterials can be improved by modifying the structural and optical properties (i.e., phase composition). Introductory portion of the book includes a brief survey of all different kinds of heterogeneous photocatalysts Discusses the possible photocatalysis mechanism occurring during the degradation of different toxic pollutants Provides the photoelectrochemical measurement for synthesized catalysts, supporting the effective transportation of photoelectrons resulting into better catalytic properties

Nanoscale Materials in Water Purification

Author: Sabu Thomas

Publisher: Elsevier

Published: 2018-11-14

Total Pages: 890

ISBN-13: 0128139277

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Novel nanoscale materials are now an essential part of meeting the current and future needs for clean water, and are at the heart of the development of novel technologies to desalinate water. The unique properties of nanomaterials and their convergence with current treatment technologies present great opportunities to revolutionize water and wastewater treatment. Nanoscale Materials for Water Purification brings together sustainable solutions using novel nanomaterials to alleviate the physical effects of water scarcity. This book covers a wide range of nanomaterials, including noble metal nanoparticles, magnetic nanoparticles, dendrimers, bioactive nanoparticles, polysaccharidebased nanoparticles, nanocatalysts, and redox nanoparticles for water purification. Significant properties and characterization methods of nanomaterials such as surface morphology, mechanical properties, and adsorption capacities are also investigated Explains how the unique properties of a range of nanomaterials makes them important water purification agents Shows how the use of nanotechnology can help create cheaper, more reliable, less energy-intensive, more environmentally friendly water purification techniques Includes case studies to show how nanotechnology has successfully been integrated into water purification system design

Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment

Author: Elvis Fosso-Kankeu

Publisher: John Wiley & Sons

Published: 2020-06-10

Total Pages: 320

ISBN-13: 1119631394

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Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment comprehensively covers a range of topics aiming to promote the implementation of photocatalysis at large scale through provision of facile and green methods for catalysts synthesis and elucidation of pollutants degradation mechanisms. This book is divided into two main parts namely “Synthesis of effective photocatalysts” (Part I) and “Mechanisms of the photocatalytic degradation of various pollutants” (Part II). The first part focuses on the exploration of various strategies to synthesize sustainable and effective photocatalysts. The second part of the book provides an insights into the photocatalytic degradation mechanisms and pathways under ultraviolet and visible light irradiation, as well as the challenges faced by this technology and its future prospects.

Advanced Water Treatment

Author: Mika Sillanpaa

Publisher: Elsevier

Published: 2020-01-08

Total Pages: 382

ISBN-13: 0128192283

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Advanced Water Treatment: Electrochemical Methods reviews the current state-of-the-art in the electrochemical-based methods for water treatment, the effectiveness of the electrochemical oxidation technique in inactivating different primary biofilm forming paper mill bacteria, as well as sulfide and organic material in pulp and paper mill wastewater in laboratory-scale batch experiments. Various electrodes are described, including boron-doped diamond, mixed metal oxide, PbO2, and their impacts on inactivation efficiency of parameters, such as current density and initial pH or chloride concentration of synthetic paper machine water. The mechanisms of action of various electrodes in different systems are reported. The book is a source of information for environmental and chemical engineers due to the number of methods and industry-focused application cases and researchers who study the transition from a laboratory environment to practical applications. Includes the most recent research on advanced water treatment by electrochemical methods Describes the use of electrochemical cleaning of paper mill wastewaters Includes techniques for cleaning mining waters and removal of organic pollutants by electrochemical methods

Nanostructured Photocatalysts

Author: Rabah Boukherroub

Publisher: Elsevier

Published: 2020-06-06

Total Pages: 301

ISBN-13: 012817837X

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Nanostructured Photocatalysts: From Materials to Applications in Solar Fuels and Environmental Remediation addresses the different properties of nanomaterials-based heterogeneous photocatalysis. Heterogeneous nanostructured photocatalysis represents an interesting and viable technique to address issues of climate change and global energy supply. Sustainable hydrogen (H2) fuel production from water via semiconductor photocatalysis, driven by solar energy, is regarded as a viable and sustainable solution to address increasing energy and environmental issues. Similarly, photocatalytic reduction of CO2 with water for the production of hydrocarbons could also be a viable solution. Sections cover band gap tuning, high surface area, the short diffusion path of carriers, and more. Introduces the utilization of nanostructured materials in heterogeneous photocatalysis for hydrogen fuel production via water splitting Explains preparation techniques for different nanomaterials and hybrid nanocomposites, enabling improved sunlight absorption efficiency and enhanced charge separation Assesses the challenges that need to be addressed before this technology can be practically implemented, particularly of identifying cost-effective nanophotocatalysts

Water Pollution and Remediation: Photocatalysis

Author: Inamuddin

Publisher: Springer Nature

Published: 2020-10-29

Total Pages: 443

ISBN-13: 303054723X

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In the context of climate change and fossil fuel pollution, solar energy appears as a cheap and sustainable fuel for many environmental applications, yet the efficiency of techniques has to be improved. This book reviews recent methods and applications of photocatalysis for the treatment of wastewater containing bacteria, heavy metals, organic pollutants, dyes and tannery effluents. Basics of water pollution, polluted river ecosystems and membranes are also detailed.

Photocatalytic Purification and Treatment of Water and Air

Author: David F. Ollis

Publisher: Elsevier Publishing Company

Published: 1993

Total Pages: 862

ISBN-13:

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Comprises the results of the first international conference examining the promise of the emerging area of photochemistry. It includes coverage of such areas as: comparison with other competitive technologies; and transfer of research results into development and application activities.

Semiconductor Photocatalysis

Author: Wenbin Cao

Publisher: BoD – Books on Demand

Published: 2016-08-24

Total Pages: 678

ISBN-13: 9535124846

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Photocatalysis is a hot topic because it is an environmentally friendly approach toward the conversion of light energy into chemical energy at mild reaction environments. Also, it is well applied in several major areas such as water splitting, bacterial inactivation, and pollutants elimination, which is a possible solution to energy shortage and environmental issues. The fundamental knowledge and the frontier research progress in typical photocatalytic materials, such as TiO2-based and non-TiO2-based photocatalysts, are included in this book. Methods to improve the photocatalytic efficiency and to provide a hint for the rational design of the new photocatalysts are covered.

Advanced Oxidation Processes for Water Treatment

Author: Mihaela I. Stefan

Publisher: IWA Publishing

Published: 2017-09-15

Total Pages: 712

ISBN-13: 1780407181

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Advanced Oxidation Processes (AOPs) rely on the efficient generation of reactive radical species and are increasingly attractive options for water remediation from a wide variety of organic micropollutants of human health and/or environmental concern. Advanced Oxidation Processes for Water Treatment covers the key advanced oxidation processes developed for chemical contaminant destruction in polluted water sources, some of which have been implemented successfully at water treatment plants around the world. The book is structured in two sections; the first part is dedicated to the most relevant AOPs, whereas the topics covered in the second section include the photochemistry of chemical contaminants in the aquatic environment, advanced water treatment for water reuse, implementation of advanced treatment processes for drinking water production at a state-of-the art water treatment plant in Europe, advanced treatment of municipal and industrial wastewater, and green technologies for water remediation. The advanced oxidation processes discussed in the book cover the following aspects: - Process principles including the most recent scientific findings and interpretation. - Classes of compounds suitable to AOP treatment and examples of reaction mechanisms. - Chemical and photochemical degradation kinetics and modelling. - Water quality impact on process performance and practical considerations on process parameter selection criteria. - Process limitations and byproduct formation and strategies to mitigate any potential adverse effects on the treated water quality. - AOP equipment design and economics considerations. - Research studies and outcomes. - Case studies relevant to process implementation to water treatment. - Commercial applications. - Future research needs. Advanced Oxidation Processes for Water Treatment presents the most recent scientific and technological achievements in process understanding and implementation, and addresses to anyone interested in water remediation, including water industry professionals, consulting engineers, regulators, academics, students. Editor: Mihaela I. Stefan - Trojan Technologies - Canada