Environmental nanotechnology for water purification

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Title:

Author:

Ul-Islam, Shahid, editor.

ISBN:

9781119641346

9781119641353

9781119641339

Physical Description:

1 online resource (xiii, 321 pages) : color illustrations

Contents:

Preface xiii 1 Environmental Toxicity of Nanoparticles 1; Mohammad Shahadat, Momina, Yasmin, Suzylawati Ismail, S.

Wazed Ali and Shaikh Ziauddin Ahammad 1.1 Introduction 2 1.1.1 Toxicity of Nanoparticles in Wastewater Bodies 3 1.1.2 The Effect of Nanoparticles Toxicity on Human Health 4 1.1.2.1 Entry of Nanoparticles into Environment 11 1.1.2.2 Exposure of Nanomaterials 13 1.1.2.3 Consumption of Nanoparticles Through Inhalation and Injection 14 1.1.2.4 Penetration of NPs Through Skin 16 1.1.3 In Vitro Toxicity of Nanoparticles 17 1.1.4 Methods for Assessment of Nanoparticles Toxicity 21 1.1.4.1 Proliferation Assays 21 1.1.4.2 Necrosis Assay 22 1.1.4.3 Apoptosis Assay 22 1.1.4.4 Oxidative Stress Assay 23 1.2 A Critical Evaluation of Challenges and Conclusions 23 Acknowledgement 24 References 24 2 Conventional and Advanced Technologies for Wastewater Treatment 33; S. Bairagi and S.

Wazed Ali 2.1 Introduction 34 2.2 Water Filtration by Various Technologies 35 2.3 Conventional Technologies 36 2.3.1 Sedimentation 36 2.3.2 Flocculation 37 2.3.3 Adsorption 38 2.3.4 Filtration 39 2.3.5 Coagulation 40 2.4 Advanced Technologies 41 2.4.1 Water Filtration Using Nanofibrous Membrane 41 2.4.1.1 Removal of Heavy Metal from the Wastewater 42 2.4.1.2 Removal of Microorganisms from Water 45 2.4.1.3 Removal of Dye from Water 49 2.5 Conclusion 53 References 54 3 Nanocarbons-Mediated Water Purification: An Application Towards Wastewater Treatment 57; Vinchurkar, Prasen and Shah,

And Environmental Impact of Broad Spectrum of Nanocarbons 84 3.6 Limitations and Research Needs 87 3.6.1 Limitations 87 3.6.2 Research Needs 87 3.7 Conclusion 87 References 88 4 Graphene-Based Nanocomposites for Photocatalytic Dye Degradation Applications 101; Khursheed Ahmad and Waseem Raza 4.1 Introduction 102 4.2 Graphene-Based Composites as Photocatalysts 104 4.2.1 Graphene/ZnO as Photocatalyst 104 4.2.2 Graphene/TiO2 as Photocatalyst 113 4.3 Conclusion 117 Acknowledgments 117 References 117 5 Synthesis of Stable and Monodispersed Cobalt Nanoparticles and Their Application as Light-Driven Photocatalytic Agents for Dye Degradation 123; Farzana Majid, Sadia Ata, Nida Sohaib, Imran Deen, Adnan Ali, Ismat Bibi,

FTIR Analysis 138 5.3.3.1 FTIR Interferogram for Co Metal NPs 138 5.3.4 Photocatalytic Properties 139 5.3.4.1 Photocatalysis of Methylene Blue With Co Metal NPs 139 5.3.4.2 Comparison of Activity of Methylene Blue 140 5.3.5 Scanning Electron Microscopy 141 5.3.5.1 SEM Analysis for Co Metal NPs 141 5.3.6 Synthesis of Cobalt Nanoparticles and Their Applications 141 5.4 Conclusion 144 References 145 6 Metal and Metal Oxide Nanoparticles for Water Decontamination and Purification 151; Shams Tabrez Khan, Faizan Ahmad, Mohammad Shahadat,

Health or Toxicity Concerns 174 6.7.2 Economic Viability 176 6.7.3 Operational Concerns 176 6.7.4 Legal Constraints and Regulations 177 6.8 Conclusion 177 Acknowledgements 178 References 178 7 Recent Advances in Metal Oxide/Sulphide-Based Heterostructure Photocatalysts for Water Splitting and Environmental Remediation 187; Umar Farooq,

Ashiq Hussain Pandit and Ruby Phul 7.1 Introduction 188 7.2 Synthesis of Heterostructures 189 7.2.1 Hydrothermal Method 190 7.2.2 Co-Precipitation Method 191 7.2.3 Sol-Gel Method 191 7.2.4 Dip-Coating 192 7.2.5 Chemical-Vapor Deposition (CVD) Method 192 7.3 Nanostructured Heterostructures for Water Splitting and Organic Pollutant Degradation 192 7.3.1 Metal Oxide/Metal Oxide Heterostructures for Water Splitting 193 7.3.2 Metal Oxide/Metal Sulphide Heterostructures for Water Splitting 197 7.3.3 Photocatalytic Removal of Organic Pollutants by Metal Oxide/Sulphide-Based Heterostructures 202 7.4 Conclusion 209 Acknowledgement 209 References 210 8 Electrospun Nanofibers for Water Purification 217; Ali Akbar Merati and Mahsa Kangazian Kangazi 8.1 Introduction to Electrospinning and Nanofibers 218 8.2 Nanofibers for Wastewater Treatment 218

Abstract:

"Dyes, pigments and metals are extensively used in food, paper, carpet, rubber, plastics, cosmetics, and textile industries, in order to color and finish products. As a result, they generate a considerable amount of coloured wastewater rich in organic, inorganic, and mineral substances which are continuously polluting the water bodies and affecting human and aquatic life. Besides these industries, urban and agricultural activities also generate effluents high in biochemical oxygen demand (BOD) and chemical oxygen demand (COD). In recent years, considerable research work has been done in this area and is underway to eliminate heavy metals particularly mercury (Hg), chromium (Cr), lead (Pb), selenium and cadmium (Cd) and synthetic dyes from polluted waters which have high toxicity and carcinogenicity. Currently a number of methods are in operation to decontaminate the polluted waters. Among several purification technologies, use of nanoparticles/composites have gained much attention as efficient purification technology due to its many advantages such as simple synthesis, special chemical and physical properties, unique photocatalytic activity and beneficial antimicrobial properties and high efficiency. The book Environmental Nanotechnology for Water Purification comprehensively covers and provides new insights on all nanoparticles, composites and advanced methods employed in water purification."-- Provided by publisher

Local Note:

John Wiley and Sons

Subject Term:

Nanotechnology -- Environmental aspects.

Water -- Purification.

Eau -- Épuration.

Nanotechnologie -- Aspect de l'environnement.

Pollution Control.

Environmental.

TECHNOLOGY & ENGINEERING.

Water -- Purification

Genre: