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.

This book describes the latest progress in the application of nanotechnology for water treatment and purification. Leaders in the field present both the fundamental science and a comprehensive overview of the diverse range of tools and technologies that have been developed in this critical area. Expert chapters present the unique physicochemical and surface properties of nanoparticles and the advantages that these provide for engineering applications that ensure a supply of safe drinking water for our growing population. Application areas include generating fresh water from seawater, preventing contamination of the environment and creating effective and efficient methods for remediation of polluted waters. The chapter authors are leading world-wide experts in the field with either academic or industrial experience, ensuring that this comprehensive volume presents the state-of-the-art in the integration of nanotechnology with water treatment and purification.

Nanotechnologies, the engine of the next Industrial Revolution, represent the new wave of research for chemical and industrial innovation. However, with any new technology or compound, comes the threat of harm to humans and natural ecosystems. Research into the environmental effects, as well as the ethical, legal, and social implications of nanotechnologies and nanoproducts has never been more important. Nanotechnologies for Water Environment Applications provides the current status of synthesis and characterization of nanomaterials, as well as the environmental effects of nanotechnology. This publication specifically targets the major applications of nanotechnologies in various water environments; issues related to the fate and transport of nanomaterials in aquatic environments; engineered nanomaterials as emerging contaminants in water; the environmental risks, and related management, of nanomaterials. Extensive up-to-date references are provided. This book will be useful to undergraduate and graduate students of engineering, educators, scientists, engineers, government officers, decision makers, process managers, and practicing professionals.

Water Purification, a volume in the Nanotechnology in the Food Industry series, provides an in-depth review of the current technologies and emerging application of nanotechnology in drinking water purification, also presenting an overview of the common drinking water contaminants, such as heavy metals, organics, microorganisms, pharmaceuticals, and their occurrences in drinking water sources. As the global water crisis has motivated the industry to look for alternative water supplies, nanotechnology presents significant potential for utilizing previously unacceptable water sources. This books explores the practical methodologies for transforming water using nanotechnologies, and is a comprehensive reference to a wide audience of food science research professionals, professors, and students who are doing research in this field. - Includes the most up-to-date information on nanotechnology applications and research methods for water purification and treatment - Presents applications of nanotechnology and engineered nanomaterials in drinking water purification to improve efficiency and reduce cost - Provides water purification research methods that are important to water quality, including precipitation, adsorption, membrane separation, and ion exchange - Covers the potential risks of nanotechnology, such as the toxicological effects of engineered nanomaterials in water and how to minimize risks based on research studies

This third volume on environmental nanotechnology includes chapters dealing with topics such nanoremediation, waste water purification, nanosensors, nanomedicine, and nanofiltration. It also highlights the safety aspects and risk assessment and management related to several toxins, as well as nanotechnology related solutions for these challenges. The book also discusses new nanomaterials from the nexus of environment, water, remediation and total environment.

Nanotechnology in Water and Waste Water Treatment: Theory and Applications explores the unique physicochemical and surface properties of nanoparticles and highlights the advantages they provide for engineering applications. Applications covered include the generation of fresh water from surface water and seawater, the prevention of the contamination of the environment, and the creation of effective and efficient methods for remediation of polluted waters. Each chapter covers a different nanotechnology-based approach and examines the basic principles, practical applications, recent breakthroughs and associated limitations. This book is ideal for researchers and professionals in the fields of nanotechnology, water treatment and desalination. In addition, it is also ideal for postgraduate students, industry and government professionals, managers and policymakers. - Gathers together the latest research and developments in the field from journal articles and conference proceedings - Discusses and evaluates the most economical and low cost treatment technologies - Presents information from related fields on the applicability, strengths and weaknesses of particular nanomaterials in key applications, thus allowing for the continuation and expansion of research in a range of fields

Nanomaterials for Air and Water Purification A comprehensive primary resource for researchers interested in nanocomposites for environmental remediation In Nanomaterials for Air and Water Purification, a team of distinguished researchers delivers an expert compilation of resources dealing with nano-based research for air and water remediation. The editors have included works by reputed researchers covering characterization, fabrication, and applications. This book is intended as a primary reference for researchers in academia and industry to offer original insights into environmentally friendly polymers and their nanocomposites. It provides comprehensive discussions of the fundamentals, attributes, characteristics, and fabrication of the materials and composites relevant to these nanomaterials. Readers will also find: Thorough introductions to electrospun nanofiber membranes for effective air filtration and nanocomposite air filter membranes Comprehensive explorations of photocatalytic materials and technologies for air purification Practical discussions of opportunities for improving and protecting water supplies with nanomaterials Fulsome treatments of polymeric membranes incorporated with metal or metal oxide nanoparticles for water purification Perfect for environmental, polymer, and surface chemists, Nanomaterials for Air and Water Purification will also earn a place in the libraries of industry professionals with an interest in water and air purification.