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Nanotechnology In Water And Wastewater Treatment

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Nanotechnology for Water and Wastewater Treatment

Nanotechnology for Water and Wastewater Treatment Book
Author : P. Lens,J.Virkutyte,V. Jegatheesan,Seung-Hyun Kim and S,Al-Abed
Publisher : IWA Publishing
Release : 2013-07-15
ISBN : 1780404581
Language : En, Es, Fr & De

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Book Description :

The rapid development of nanoscience enables a technology revolution that will soon impact virtually every facet of the water sector. Yet, there is still too little understanding of what nanoscience and nanotechnology is, what can it do and whether to fear it or not, even among the educated public as well as scientists and engineers from other disciplines. Despite the numerous books and textbooks available on the subject, there is a gap in the literature that bridges the space between the synthesis (conventional and more greener methods) and use (applications in the drinking water production, wastewater treatment and environmental remediation fields) of nanotechnology on the one hand and its potential environmental implications (fate and transport of nanomaterials, toxicity, Life Cycle Assessments) on the other. Nanotechnology for Water and Wastewater Treatment explores these topics with a broad-based multidisciplinary scope and can be used by engineers and scientists outside the field and by students at both undergraduate and post graduate level. Table of Contents Introduction: Nanotechnology for water and wastewater treatment: potential and limitation; Characteristics and properties of nanoparticles; Physical and chemical analysis of nanoparticles; Fate and transport of nanoparticles/nanomaterials, toxicity studies; Nanoparticles and bioremediation; Nanosorbents; Effective Phosphate Removal Using Ca-based Layered Double Hydroxide Materials; Mg(OH)2 nanoadsorbent during Treating the Low Concentration of Cr; Nano catalysts; Visible-light doped titania for water purification: nitrogen and silver doping; Doping of Pd nanocatalysts for PCB removal; The use of bimetallic nanosystems to remove POPs from soils and sediments"; Nanomaterials for disinfection and microbial control; Microbial manufactured silver nanoparticles for water disinfection; Electrospun nanofibers for Point-of-Use Water Treatment; Nanomaterials to enhance filtration; Metalic and ceramic microreactors; Enzyme-Immobilized Nanofiltration Membrane To Mitigate Biofouling Based on Quorum Quenching; Biomimetic membranes for water filtration; Nano sensors ; Functionalised graphene: a novel platform for biosensors; Lab-on-a-Chip Interferometric Biosensor Nanotechnology; Nanosensors for pathogens; Nanomanufacturing: Materials Design and Production; Green synthesis of nanoparticles and nanocatalysts; Plant-based nanoparticle manufacturing.

Nanotechnology in Water and Wastewater Treatment

Nanotechnology in Water and Wastewater Treatment Book
Author : Amimul Ahsan,Ahmad Fauzi Ismail
Publisher : Elsevier
Release : 2018-11-15
ISBN : 012813903X
Language : En, Es, Fr & De

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Book Description :

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

Handbook of Nanomaterials for Wastewater Treatment

Handbook of Nanomaterials for Wastewater Treatment Book
Author : Bharat A. Bhanvase,Shirish Sonawane,Vijay B. Pawade,Aniruddha B. Pandit
Publisher : Elsevier
Release : 2021-05-01
ISBN : 0128214996
Language : En, Es, Fr & De

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Book Description :

Handbook of Nanomaterials for Wastewater Treatment: Fundamentals and Scale up Issues provides coverage of the nanomaterials used for wastewater treatment, covering photocatalytic nanocomposite materials, nanomaterials used as adsorbents, water remediation processes, and their current status and challenges. The book explores the major applications of nanomaterials for effective catalysis and adsorption, also providing in-depth information on the properties and application of new advanced nanomaterials for wastewater treatment processes. This is an important reference source for researchers who need to solve basic and advanced problems relating to the use of nanomaterials for the development of wastewater treatment processes and technologies. As nanotechnology has the potential to substantially improve current water and wastewater treatment processes, the synthesis methods and physiochemical properties of nanomaterials and noble metal nanoparticles make their performance and mechanisms efficient for the treatment of various pollutants. Explains the properties of the most commonly used nanomaterials used for wastewater treatment Describes the major nanoscale synthesis and processing techniques for wastewater treatment Assesses the major challenges for using nanomaterials on a mass scale for wastewater treatment

Environmental Nanotechnology for Water Purification

Environmental Nanotechnology for Water Purification Book
Author : Shahid Ul-Islam
Publisher : John Wiley & Sons
Release : 2020-06-10
ISBN : 1119640458
Language : En, Es, Fr & De

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Book Description :

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.

Special Issue Nanotechnology for Water and Wastewater Treatment

Special Issue Nanotechnology for Water and Wastewater Treatment Book
Author : Mark R. Wiesner
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Special Issue Nanotechnology for Water and Wastewater Treatment book written by Mark R. Wiesner, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanotechnology for Water Treatment and Purification

Nanotechnology for Water Treatment and Purification Book
Author : Anming Hu,Allen Apblett
Publisher : Springer
Release : 2014-07-04
ISBN : 3319065785
Language : En, Es, Fr & De

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Book Description :

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.

Encyclopedia of Nanotechnology in Water and Wastewater Treatment

Encyclopedia of Nanotechnology in Water and Wastewater Treatment Book
Author : Diego Ronaldinho
Publisher : Unknown
Release : 2013-04
ISBN : 9781781543122
Language : En, Es, Fr & De

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Book Description :

Nanotechnology, the engineering and art of manipulating matter at the nanoscale (1-100 nm), offers the potential of novel nanomaterials for the treatment of surface water, groundwater and wastewater contaminated by toxic metal ions, organic and inorganic solutes and microorganisms. Due to their unique activity toward recalcitrant contaminants many nanomaterials are under active research and development for use in the treatment of water. In this book this concept is discussed.

Nanotechnology in Water Treatment Applications

Nanotechnology in Water Treatment Applications Book
Author : Thomas Eugene Cloete,Michele De Kwaadsteniet,Marelize Botes
Publisher : Horizon Scientific Press
Release : 2010
ISBN : 9781904455660
Language : En, Es, Fr & De

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Book Description :

Nanotechnology, the engineering and art of manipulating matter at the nanoscale (1-100 nm), offers the potential of novel nanomaterials for the treatment of surface water, groundwater, and wastewater contaminated by toxic metal ions, organic and inorganic solutes, and microorganisms. At the present time, many nanomaterials are under active research and development. This timely volume reviews the current state-of-the-art research and development of different nanomaterials (nanostructured catalytic membranes, nanosorbents, nanocatalysts, and bioactive nanoparticles) and their application in water treatment, purification, and disinfection. The expert authors have contributed chapters focusing on the cutting-edge research in this emerging technology and its applications in microbiology and water treatment. The topics covered include the detection of microbial pathogens, nanofibers, and nanobiocides in water purification; nanozymes for biofilm removal; water and wastewater treatment; and reverse osmosis. Also included is a chapter dedicated to the health and environmental concerns for the use of nanotechnology in water treatment. This book is for all who are interested in nanobiotechnology, bioremediation, biodiagnostics, molecular diagnostics, and environmental microbiology and it is a recommended text for all microbiology laboratories.

Application of Nanotechnology in Membranes for Water Treatment

Application of Nanotechnology in Membranes for Water Treatment Book
Author : Alberto Figoli,Jan Hoinkis,Sacide Alsoy Altinkaya,Jochen Bundschuh
Publisher : CRC Press
Release : 2017-07-14
ISBN : 1351715259
Language : En, Es, Fr & De

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Book Description :

The book focuses on Application of Nanotechnology in Membranes for Water Treatment but not only provides a series of innovative solutions for water reclamation through advanced membrane technology but also serves as a medium to promote international cooperation and networking for the development of advanced membrane technology for Universal well-being and to achieve the common goal of supplying economically, environmentally and societally sustainable freshwater and better sanitation systems. This book is unique because the chapters were authored by established researchers all around the globe based on their recent research findings. In addition, this book provides a holistic coverage of membrane development for water treatment, from the membrane preparation and characterizations to the performance for specific processes and applications. Since that water scarcity has become a global risk and one of the most serious challenges for the scientific community in this century, the publication of this book is therefore significant as it will serve as a medium for a good reference of an alternative solution in water reclamation. This book will provide the readers with a thorough understanding of the different available approaches for manufacturing membranes both with innovative polymeric systems and inorganic nano-materials which could give enhanced functionalities, catalytic and antimicrobial activities to improve the performance of the existing membranes. It will be useful for leading decision and policy makers, water sector representatives and administrators, policy makers from the governments, business leaders, business houses in water treatment, and engineers/ scientists from both industrialized and developing countries as well.

Modern Age Waste Water Problems

Modern Age Waste Water Problems Book
Author : Mohammad Oves,Mohammad Omaish Ansari,Mohammad Zain Khan,Mohammad Shahadat,Iqbal M.I. Ismail
Publisher : Springer
Release : 2019-07-23
ISBN : 3030082830
Language : En, Es, Fr & De

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Book Description :

This book presents a picture of the advances in the research of theoretical and practical frameworks of wastewater problems and solutions. The book deals with a basic concept and principles of modern biological, chemical and technical approaches to remediate various hazardous pollutants from wastewater. The latest empirical research findings in wastewater treatment are comprehensively discussed. Examples of low-cost technologies are also included. The book is written for professionals, researchers, academics and students wanting to improve their understanding of the strategic role of environmental protection and advanced applied technologies.

Waste Water Treatment Technologies Volume III

Waste Water Treatment Technologies     Volume III Book
Author : Saravanamuthu Vigneswaran
Publisher : EOLSS Publications
Release : 2009-09-25
ISBN : 1848262507
Language : En, Es, Fr & De

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Book Description :

Water and Wastewater Treatment Technologies theme is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Water and Wastewater Treatment Technologies deals, in three volumes, and covers several topics, with several issues of great relevance to our world such as: Urban Wastewater Treatment; Characteristics of Effluent Organic Matter in Wastewater; Filtration Technologies in wastewater treatment; Air Stripping in Industrial Wastewater Treatment; Dissolved air flotation in industrial wastewater treatment; Membrane Technology for Organic Removal in Wastewater; Adsorption and Biological Filtration in Wastewater Treatment; Physico-chemical processes for Organic removal from wastewater effluent; Deep Bed Filtration: Modelling Theory And Practice ; Specific options in biological wastewater treatment for reclamation and reuse ; Biological Phosphorus Removal Processes For Wastewater Treatment ; Sequencing Batch Reactors: Principles, Design/Operation And Case Studies ; Wastewater stabilization ponds (WSP)for wastewater treatment; Treatment of industrial wastewater by membrane bioreactors; Stormwater treatment technologies; Sludge Treatment Technologies ; Wastewater Treatment Technology For Tanning Industry; Palm Oil And Palm Waste Potential In Indonesia ; Recirculating Aquaculture Systems – A Review ; Upflow anaerobic sludge blanket (UASB)reactor in wastewater treatment; Applied Technologies In Municipal Solid Waste Landfill Leachate Treatment; Water Mining: Planning and Implementation Issues for a successful project; Assessment methodologies for water reuse scheme and technology; Nanotechnology for Wastewater Treatment. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs.

Integrated and Hybrid Process Technology for Water and Wastewater Treatment

Integrated and Hybrid Process Technology for Water and Wastewater Treatment Book
Author : Abdul Wahab Mohammad,Wei Lun Ang
Publisher : Elsevier
Release : 2021-08-25
ISBN : 0128230568
Language : En, Es, Fr & De

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Book Description :

Tackling the issue of water and wastewater treatment nowadays requires novel approaches to ensure that sustainable development can be achieved. Water and wastewater treatment should not be seen only as an end-of-pipe solution but instead the approach should be more holistic and lead to a more sustainable process. This requires the integration of various methods/processes to obtain the most optimized design. Integrated and Hybrid Process Technology for Water and Wastewater Treatment discusses the state-of-the-art development in integrated and hybrid treatment processes and their applications to the treatment of a vast variety of water and wastewater sources. The approaches taken in this book are categorized as (i) resources recovery and consumption, (ii) optimal performance, (iii) physical and environmental footprints, (iv) zero liquid discharge concept and are (v) regulation-driven. Through these categories, readers will see how such an approach could benefit the water and wastewater industry. Each chapter discusses challenges and prospects of an integrated treatment process in achieving sustainable development. This book serves as a platform to provide ideas and to bridge the gap between laboratory-scale research and practical industry application. Includes comprehensive coverage on integrated and hybrid technology for water and wastewater treatment Takes a new approach in looking at how water and wastewater treatment contributes to sustainable development Provides future direction of research in sustainable water and wastewater treatment

Aquananotechnology

Aquananotechnology Book
Author : Kamel A. Abd-Elsalam,Muhammad Zahid
Publisher : Elsevier
Release : 2020-12-01
ISBN : 0128211423
Language : En, Es, Fr & De

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Book Description :

Aquananotechnology: Applications of Nanomaterials for Water Purification focuses on the impacts of, and opportunities for, the application of nanotechnology to enhance water quality and the societal concerns surrounding the widespread use of nanotechnology in the water arena. Sections cover the use of nano-sensors for the detection of water pollutants, the control of waterborne pathogens, and the use of nano-biochar coal fly composites for phytoremdtions wastewater pollutants. In addition, the book explores the uses of nanoadsorbents for heavy metals, dyes, Arsenic, pesticides, and water/wastewater remediation and decontamination of water from xenobiotics, bionanocomposites, metal oxides, silver, zinc nanoparticles, and carbon-based nanomaterials for wastewater treatment. In addition, the book covers the use of zerovalent iron nanomaterials and nanostructured mesoporous silica for water purification, along with nano-hydrogels to increase water efficiency and conservation. Finally, the socioeconomic impacts and risks of aquananotechnology in ecosystems are discussed. This book provides a detailed description of the ecological applications of nanomaterials in aquatic environments, offering a cogent analysis of both major applications and challenges. Shows how a range of nanomaterial types are being used for ecological applications in aquatic environments Explores the effects different types of nanomaterials have on a variety of ecosystems Assesses the major challenges of using nanotechnology to improve water quality on a mass scale

Waste Water Treatment Technologies Volume II

Waste Water Treatment Technologies     Volume II Book
Author : Saravanamuthu Vigneswaran
Publisher : EOLSS Publications
Release : 2009-09-25
ISBN : 1848261942
Language : En, Es, Fr & De

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Book Description :

Water and Wastewater Treatment Technologies theme is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Water and Wastewater Treatment Technologies deals, in three volumes, and covers several topics, with several issues of great relevance to our world such as: Urban Wastewater Treatment; Characteristics of Effluent Organic Matter in Wastewater; Filtration Technologies in wastewater treatment; Air Stripping in Industrial Wastewater Treatment; Dissolved air flotation in industrial wastewater treatment; Membrane Technology for Organic Removal in Wastewater; Adsorption and Biological Filtration in Wastewater Treatment; Physico-chemical processes for Organic removal from wastewater effluent; Deep Bed Filtration: Modelling Theory And Practice ; Specific options in biological wastewater treatment for reclamation and reuse ; Biological Phosphorus Removal Processes For Wastewater Treatment ; Sequencing Batch Reactors: Principles, Design/Operation And Case Studies ; Wastewater stabilization ponds (WSP)for wastewater treatment; Treatment of industrial wastewater by membrane bioreactors; Stormwater treatment technologies; Sludge Treatment Technologies ; Wastewater Treatment Technology For Tanning Industry; Palm Oil And Palm Waste Potential In Indonesia ; Recirculating Aquaculture Systems – A Review ; Upflow anaerobic sludge blanket (UASB)reactor in wastewater treatment; Applied Technologies In Municipal Solid Waste Landfill Leachate Treatment; Water Mining: Planning and Implementation Issues for a successful project; Assessment methodologies for water reuse scheme and technology; Nanotechnology for Wastewater Treatment. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs.

Waste Water Treatment Technologies Volume I

Waste Water Treatment Technologies     Volume I Book
Author : Saravanamuthu Vigneswaran
Publisher : EOLSS Publications
Release : 2009-09-15
ISBN : 1848261888
Language : En, Es, Fr & De

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Book Description :

Water and Wastewater Treatment Technologies theme is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Water and Wastewater Treatment Technologies deals, in three volumes, and covers several topics, with several issues of great relevance to our world such as: Urban Wastewater Treatment; Characteristics of Effluent Organic Matter in Wastewater; Filtration Technologies in wastewater treatment; Air Stripping in Industrial Wastewater Treatment; Dissolved air flotation in industrial wastewater treatment; Membrane Technology for Organic Removal in Wastewater; Adsorption and Biological Filtration in Wastewater Treatment; Physico-chemical processes for Organic removal from wastewater effluent; Deep Bed Filtration: Modelling Theory And Practice ; Specific options in biological wastewater treatment for reclamation and reuse ; Biological Phosphorus Removal Processes For Wastewater Treatment ; Sequencing Batch Reactors: Principles, Design/Operation And Case Studies ; Wastewater stabilization ponds (WSP)for wastewater treatment; Treatment of industrial wastewater by membrane bioreactors; Stormwater treatment technologies; Sludge Treatment Technologies ; Wastewater Treatment Technology For Tanning Industry; Palm Oil And Palm Waste Potential In Indonesia ; Recirculating Aquaculture Systems – A Review ; Upflow anaerobic sludge blanket (UASB)reactor in wastewater treatment; Applied Technologies In Municipal Solid Waste Landfill Leachate Treatment; Water Mining: Planning and Implementation Issues for a successful project; Assessment methodologies for water reuse scheme and technology; Nanotechnology for Wastewater Treatment. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs W

Advanced Nanomaterials for Water Engineering Treatment and Hydraulics

Advanced Nanomaterials for Water Engineering  Treatment  and Hydraulics Book
Author : Saleh, Tawfik A.
Publisher : IGI Global
Release : 2017-01-30
ISBN : 1522521372
Language : En, Es, Fr & De

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Book Description :

While nanotechnology has been a booming research field for years, the study of how it can be used alongside water engineering has not been deeply explored. By examining the ways in which nanomaterials can aid hydraulics, these tools can be used for water purification, water treatments, and a vast array of other uses that will make water engineering easier and safer. Advanced Nanomaterials for Water Engineering, Treatment, and Hydraulics is a comprehensive reference source for the latest research-based material on the use of progressive nanotechnologies for water technologies. Featuring coverage on relevant topics such as water purification, nano-metal oxides, chitosan nanoparticles, and contaminated waste water, this is an ideal reference source for engineers, students, academics, and researchers seeking innovative perspectives on the use of nanomaterials in water engineering.

Development in Wastewater Treatment Research and Processes

Development in Wastewater Treatment Research and Processes Book
Author : Susana Rodriguez-Couto,Maulin P. Shah,Jayanta Kumar Biswas
Publisher : Elsevier
Release : 2021-09-16
ISBN : 0323900119
Language : En, Es, Fr & De

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Book Description :

Removal of Emerging Contaminants from Wastewater through Bio-nanotechnology showcases profiles of the nonregulated contaminants termed as “emerging contaminants, which comprise industrial and household persistent toxic chemicals, pharmaceuticals and personal care products (PPCPs), pesticides, surfactants and surfactant residues, plasticizers and industrial additives, manufactured nanomaterials and nanoparticles, microplastics, etc. that are used extensively in everyday life. The occurrence of “emerging contaminants in wastewater, and their behavior during wastewater treatment and production of drinking water are key issues in the reuse and recycling of water resources. This book focuses on the exploitation of Nano-biotechnology inclusive of the state-of-the-art remediate strategies to degrade/ detoxify/stabilize toxic and hazardous contaminants and restore contaminated sites, which is not as comprehensively discussed in the existing titles on similar topics available in the global market. In addition, it discusses the potential environmental and health hazards and ecotoxicity associated with the widespread distribution of emerging contaminants in the water bodies. It also considers the life cycle assessment (LCA) of emerging (micro)-pollutants with suitable case studies from various industrial sources. Provides natural and ecofriendly solutions to deal with the problem of pollution Details underlying mechanisms of nanotechnology-associated microbes for the removal of emerging contaminants Describes numerous successful field studies on the application of bio-nanotechnology for eco-restoration of contaminated sites Presents recent advances and challenges in bio-nanotechnology research and applications for sustainable development Provides authoritative contributions on the diverse aspects of bio-nanotechnology by world’s leading experts

Water Purification

Water Purification Book
Author : Alexandru Grumezescu
Publisher : Academic Press
Release : 2016-12-28
ISBN : 0128043717
Language : En, Es, Fr & De

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Book Description :

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

Nanotechnology in Industrial Wastewater Treatment

Nanotechnology in Industrial Wastewater Treatment Book
Author : Dr. Arup Roy,Jayanta Bhattacharya
Publisher : IWA Publishing
Release : 2015-01-15
ISBN : 1780406878
Language : En, Es, Fr & De

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Book Description :

Nanotechnology in Industrial Wastewater Treatment is a state of the art reference book. The book is particularly useful for wastewater technology development laboratories and organizations. All professional and academic areas connected with environmental engineering, nanotechnology based wastewater treatment and related product design are incorporated and provide an essentialresource. The book describes the application and synthesis of Ca-based and magnetic nano-materials and their potential application for removal/treatment of heavy metals from wastewater. Nanotechnology in Industrial Wastewater Treatment discusses the rapid wastewater treatment methods using Ca-based nanomaterials and magnetic nanomaterials. This is an emerging area of new science and technology in wastewater treatment. The main audiences for the book are water industry professionals, research scholars and students in the area of Environmental Engineering and Nanotechnology. Authors: Dr. Arup Roy Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur,India; and Professor Jayanta Bhattacharya, Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur, India.

Interfacial Reactions of Natural and Engineered Nanoparticles and Colloids in Water and Wastewater Treatment Systems

Interfacial Reactions of Natural and Engineered Nanoparticles and Colloids in Water and Wastewater Treatment Systems Book
Author : Jessica R. Ray
Publisher : Unknown
Release : 2015
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Global water demands continue to rise, especially in lieu of population growth and consequential economic and energy needs. Furthermore, global climate change has placed additional stresses on the future availability of freshwater. As a result, it is now becoming crucial to replenish water sources via drinking water and wastewater treatment. Due to advancements in nanotechnology, engineered and manufactured nanoparticles are increasingly entering water and wastewater treatment plants. In addition, naturally occurring nanoparticles can also form or exist in drinking water and wastewater treatment facilities. Therefore, to design better water treatment systems, it is important to understand how these nanoparticles will affect water chemistry as well as the efficacy of drinking water and wastewater treatment processes. This work consists of environmental perspectives of natural and engineered nanoparticle interactions in two complex aqueous environments: wastewater treatment and drinking water treatment systems. First, impacts of natural and engineered nanoparticles on wastewater treatment process efficacy were investigated in the following three systems: (1) heterogeneous iron (hydr)oxide formation on organic coated substrates, (2) homogeneous iron (hydr)oxide formation, and (3) mixed homo/heterogeneous nucleation of iron (hydr)oxide on CeO2 engineered nanoparticles. In System (1), heterogeneous precipitation of naturally occurring iron (hydr)oxide nanoparticles in model wastewater systems was investigated. Quartz, polyaspartate and alginate coated substrates were used to model abundant mineral substrates found downstream of wastewater treatment, anionic polyelectrolytes used in coagulation processes, and extracellular materials in biofilm during biochemical treatment, respectively. For the first time, iron (hydr)oxide nanoparticle formation on polymeric substrates was monitored in situ. Results indicated that substrate surface hydrophilicity was more dominant than electrostatic interactions in predicting nucleation. In System (2), homogeneous iron (hydr)oxide nucleation and phase transformation was then investigated as a function of synthesis conditions. Iron (hydr)oxides are highly reactive and effective sorbents for wastewater contaminants and formation conditions can determine their sorption efficacy. Therefore, in this study, the Fe(III) hydrolysis kinetics and cooling rates were altered to investigate the simultaneous formation of mixtures of hematite and 6-line ferrihydrite iron (hydr)oxide nanoparticles. Complementary in situ and ex situ analytical techniques revealed that understanding in situ physicochemical properties can control ex situ nanoparticle characteristics. Also, separate, distinct hematite and 6-line ferrihydrite phases were generated simultaneously and 6-line ferrihydrite removed more As(V), a model wastewater contaminant, compared to hematite. Moreover, iron (hydr)oxides can also form in the presence of engineered nanomaterials in wastewater which can affect contaminant transport downstream as well as wastewater stream chemistry. Therefore, in System (3), iron (hydr)oxide formation on engineered cerium oxide (CeO2) nanoparticles by redox reactions with Fe2+ (a reagent used in advanced oxidation processes in wastewater treatment) and Cr(VI)(aq) (a pre-existing wastewater contaminant) was investigated. The coexistence of Fe2+ and Cr(VI)(aq) were found to greatly promote the colloidal stability and to inhibit the dissolution of CeO2 nanoparticles while promoting the formation of an iron (hydr)oxide surface coating layer via redox reactions at the CeO2 nanoparticle surface. This is more prominent in the presence of Cr(VI)(aq) compared to systems without Cr(VI)(aq) ions. Engineered nanoparticles could act as heterogeneous nucleation sites and adsorption sites when released into the environment, incorporating toxic elements and molecules into a "hybrid" engineered/natural nanoparticle composite. As such, tt is essential to understand surface redox chemistry which nanoparticles could experience during wastewater treatment processes. Second, effects of naturally forming colloids and membrane-surface-modifier nanomaterials on reverse osmosis (RO) drinking water treatment processes were studied. Fouling by calcium carbonate (CaCO3) and calcium sulfate (CaSO4) and other brackish water constituents can clog RO membrane pores and reduce the amount of purified water produced, and as a result, engineered nanomaterials have been used to reduce fouling on membrane surfaces. In this work, two scientific challenges related to colloid interactions during RO were addressed: (4) mineral scaling on polyethylene glycol (PEG)-modified RO membranes, and (5) mineral scaling, organic fouling and biofouling on multifunctional membrane surfaces. In System (4), hydrophilic, polyamide RO membrane surface modification using grafted PEG was studied as a remedy to reduce fouling from mineral scalants (i.e., CaCO3 and CaSO4) and humic acid which exists in high concentrations in brackish water. In batch systems without humic acid, the PEG-grafted membranes were successful in reducing mineral scale formation at the membrane surface; however, in the presence of humic acid, a specific interaction between SO4, PEG, and humic acid resulted in promoted CaSO4 scaling at the membrane surface. Findings of this work indicate that multiple RO feed water constituents should be considered when determining the efficacy of membrane surface modifications. In System (5), to simultaneously combat colloidal fouling from CaCO3 and CaSO4, organic fouling (e.g., humic acid) and biofouling (e.g., Escherichia coli), a multifunctional membrane was fabricated. Graphene oxide (GO) nanosheets, gold nanostars (AuNS), and PEG were combined on polyamide RO membrane surfaces and demonstrated to significantly reduce fouling from the three major fouling classes. Bacterial inactivation at the RO membrane surface was achieved by irradiating the membrane with an 808 nm laser activating the photothermal properties of the Au nanostars. Our newly developed novel, multifunctional membrane surface was therefore able to significantly reduce mineral scaling, organic fouling, and biofouling during RO without additional chemical or thermal treatments. The findings from this systematic, mechanistic study investigating natural and engineered nanoparticle interactions in complex, dynamic systems can help improve the understanding of the fate, transport, and transformations of nanoparticles in water and wastewater treatment processes in response to increasing quantities and applications of nanoparticles in aquatic systems. Furthermore, through our unique engineered design, we have provided promising solutions for drastically improving water treatment processes in complex feed solutions.