Download or read book Graphene based Membranes for Mass Transport Applications written by Pengzhan Sun and published by Royal Society of Chemistry. This book was released on 2018-09-21 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of graphene-based membrane materials and its applications.
Download or read book Graphene based Membranes for Mass Transport Applications written by Hongwei Zhu and published by Royal Society of Chemistry. This book was released on 2018-09-21 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is great interest in the novel mass-transport properties of graphene-based membrane materials, especially for environmental applications such as wastewater treatment and reuse, gas separation and water desalination. Graphene-based Membranes for Mass Transport Applications is a comprehensive overview of the research in this area. Starting with current state-of-the-art membrane-based filtration and separation technologies, the book then explores the structure, composition and general properties of graphene-based membranes including nanoporous graphene and graphene oxide followed by the selective mass transport properties of the membranes. The final chapters look at their specific use in barrier applications, purification and separation applications and water desalination. Edited by leading researchers, the book provides an introduction and reference to physicists, chemists, material scientists, chemical engineers and students who are entering or already working in the field of graphene-based membrane materials.
Download or read book Two Dimensional Materials Based Membranes written by Gongping Liu and published by John Wiley & Sons. This book was released on 2022-08-08 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-Dimensional-Materials-Based Membranes An authoritative and up to date discussion of two-dimensional materials and membranes In Two-Dimensional-Materials-Based Membranes: Preparation, Characterization, and Applications, a team of distinguished chemical engineers delivers a comprehensive exploration of the latest advances in design principles, synthesis approaches, and applications of two-dimensional (2D) materials—like graphene, metal-organic frameworks (MOFs), 2D layered double hydroxides, and MXene—and highlights the significance and development of these membranes. In the book, the authors discuss the use of membranes to achieve high-efficiency separation and to address the challenges posed in the field. The book also discusses potential challenges and benefits in the future development of advanced 2D nanostructures, as well as their impending implementation in applications in the fields of energy, sustainability, catalysis, electronics, and biotechnology. Readers will also find: A thorough introduction to fabrication methods for 2D-materials-based membranes, including the synthesis of nanosheets, membrane structures, and fabrication methods Descriptions of three types of 2D-materials-based membranes: single-layer membranes, laminar membranes and mixed-matrix membranes Comprehensive discussions of 2D-materials-based membranes for water and ions separation, solvent-water separation and gas separation Explorations of transport mechanism of 2D-materials-based membranes for molecular separations Perfect for membrane scientists, inorganic chemists, and materials scientists, Two-Dimensional-Materials-Based Membranes will also earn a place in the libraries of chemical and process engineers in industrial environments.
Download or read book Study of Ion and Solvent Transport Through Graphene Oxide Membranes written by Kai Wang and published by . This book was released on 2016 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filtration membranes are required to be thin, robust, energy efficient, and accurate on selectivity. Graphene oxide (GO) is believed to be a potential next generation material for industrial membrane applications because of its unique properties such as strong mechanical strength, excellent aqueous solution processability, and great flexibility for membrane fabrication. Research on the transport models, the separation performance, and the functionalization of GO membranes has been developed. However, many mechanisms of mass transport through GO membranes still remain debatable. In this work, GO was synthesized, and then functionalized with linear amine-terminated poly(ethylene glycol) (PEG) and aluminum ions (Al). The fabrication and characterizations of GO, PEG-GO, and Al-GO membranes were demonstrated in this work. Water and water/ethanol binary mixture transport through GO, PEG-GO, and Al-GO membranes were studied to investigate the permeation and the rejection rates of solvents through GO-based membranes. The total volumetric flux of water/ethanol mixture through GO membranes was inversely proportional to the viscosity of the solvent mixtures. The steric hindrance effect and the interactions between the solvent molecules and the membrane surfaces dominated the rejection rate of ethanol through GO membranes. The functionalization of GO modified the pore size and the porosity of the membranes, resulting in faster permeation of solvents and reduced rejection rates of ethanol through PEG-GO and Al-GO membranes. Deformation of nanochannels within the functionalized GO membranes was observed when the membranes were operated under highly pressurized conditions. Diffusive transport of two charge equivalent and structurally similar ruthenium complex ions Ru(bpy)32+ and iv Ru(phen)32+ through GO, PEG-GO, and Al-GO membranes were also studied. Our data showed high similarity with the results reported previously in the literature, indicating that the GO and functionalized GO membranes used in this work were highly consistent. Due to the enlarged pore sizes and the reduced interactions between ions and the membrane surfaces, the flux of ions through PEG-GO membranes was 300% higher than that through GO membranes. In contrast, permeation of ions through Al-GO membranes was slower than that through GO membranes. The blocked nanopores and the electrostatic repulsion between the intercalated aluminum ions and complex ions were the main reasons for this observation. In addition, the main reason for the significant permeance difference between Ru(bpy)32+ and Ru(phen)32+ ions was confirmed as the steric hindrance effect. This work contributes to the basic research on GO membranes in potential applications. It can be beneficial to the academic laboratories for understanding the mechanism of mass transport through GO-based membranes. These new membrane materials could replace traditional membrane materials in many industrial applications in the future.
Download or read book Two Dimensional 2D Nanomaterials in Separation Science written by Rasel Das and published by Springer Nature. This book was released on 2021-04-26 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers newly emerging two-dimensional nanomaterials which have been recently used for the purpose of water purification. It focuses on the synthesis methods of 2D materials and answers how scientists/engineers/nanotechnologist/environmentalists could use these materials for fabricating new separation membranes and most probably making commercially feasible technology. The chapters are written by a collection of international experts ensuring a broad view of each topic. The book will be of interest to experienced researchers as well as young scientists looking for an introduction into 2D materials-based cross-disciplinary research.
Download or read book Graphene Membranes Synthesis and Mass Transport Across Atomic Thickness Porous Membranes written by Jakob Kilian Buchheim and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Membranes for Water and Wastewater Treatment written by Asuncion Maria Hidalgo and published by . This book was released on 2021 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is a vital element for life and the environment. Water pollution has been documented as a contributor to a wide range of health problems. In recent years, the water quality levels have suffered great deterioration because of rapid social and economic development and because it is used to “dump” a wide range of pollutants.This book entitled “Membranes for Water and Wastewater Treatment” contains featured research papers dealing with recent developments and advances in all aspects related to membranes for water and wastewater treatment: membrane processes, combined processes (including one membrane step), modified membranes, new materials, and the possibility to reduce fouling and to improve the efficiency of enhanced processes. The papers compiled in this Special Issue can be read as a response to the current needs and challenges in membrane development for water and wastewater treatment.Half of the research articles correspond to concrete and practical applications of the use of membrane processes in different fields of the industry, with the aim of treating and conditioning water and wastewater. The studies reveal the treatment of industrial streams, mining, recycled paper industry, olive mill, urban wastewater, etc. Another important percentage of studies are related to membrane modification processes, with the aim of obtaining new materials with better performance in the separation processes, thus describing the use of membranes modified with chitosan, nanoparticles, and other organic compounds. This field also includes studies related to fouling and its modeling.
Download or read book Advances in Carbon Nanostructures written by Adrián Silva and published by BoD – Books on Demand. This book was released on 2016-10-05 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon atoms have the amazing ability to bond in remarkable different manners that can assume distinct astonishing dimensional arrangements from which absolutely diverse and interesting nanostructured carbon materials are obtained. This book aims to cover the most recent advances in (i) Graphene and derivatives, including graphene-based magnetic composites, membranes, wafer devices, and nanofibers for several applications, as well as some particular properties, such as light emission from graphene; (ii) Carbon nanotubes heaters and fibers for reinforcement of cement and diamond-based thin films; and (iii) Nanofluids consisting of both graphene and carbon nanotubes, apart from reporting some important case studies dealing with carbon nanostructures and their use in sensors, coatings, or electromagnetic wave absorbers.
Download or read book Current Trends and Future Developments on Bio Membranes written by Angelo Basile and published by Elsevier. This book was released on 2019-07-16 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Trends and Future Developments on (Bio-) Membranes: Microporous Membrane and Membrane Reactors focuses on the structure, preparation, characterization and applications of microporous membranes and membrane reactors, including transport mechanisms through a range of microporous membranes. It is a key reference text for R&D managers who are interested in the development of gas separation and water/waste treatment technologies, but is also well-suited for academic researchers and postgraduate students working in the broader area of strategic material production, separation and purification. Users will find comprehensive coverage of current methods, their characterization and properties, and various applications in gas separation and water treatment. Reviews gas separation and water treatment processes and relates them to various applications Outlines the use of microporous membranes in gas separations and water treatment Introduces the various types of microporous membranes (graphene, polymeric, etc.) and their mechanism of action Provides simulation models of the various processes
Download or read book Graphene based Nanocomposite Sensors written by Sarat Kumar Swain and published by Royal Society of Chemistry. This book was released on 2023-10-13 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoscale Materials in Water Purification written by Sabu Thomas and published by Elsevier. This book was released on 2018-11-14 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Membrane Technologies and Applications written by Kaustubha Mohanty and published by CRC Press. This book was released on 2011-12-19 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane technologies play an increasingly important role in unit operations for resource recovery, pollution prevention, and energy production, as well as environmental monitoring and quality control. They are also key component technologies of fuel cells and bioseparation applications. Membrane Technologies and Applications provides essential data and background information on various dimensions of membrane technologies, with a major focus on their practical application. Membranes of inorganic materials offer cost-effective solutions for simple to complex separation problems. This book is designed for anyone interested in water and wastewater treatment, membrane suppliers, as well as students and academics studying the field.
Download or read book Macroscopic Graphene Membranes with Tunable Nanopores for Highly Selective Mass Separation written by Doojoon Jang and published by . This book was released on 2018 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane-based filtration enables energy-efficient separations of solutes, solvents, or gases, benefiting a wide range of applications including water desalination, nanofiltration, hemodialysis, solvent-based separation, or natural gas purification. Semipermeable polymeric desalination membranes rely on solution-diffusion mechanism to separate water from salts, where selective transport of species arises from their solubility and diffusivity in polymer phase. Despite the remarkable progress in materials, structure, and separation process over the past few decades, today's membranes are subjected to intrinsic challenges ranging from resolving the trade-off between permeability and selectivity to maintaining robust operation with high stability and low fouling. Two dimensional materials have the potential to address some of the above challenges by offering a fundamentally new mechanism to control nanofluidic transport with sustainable nanoscale pores, thereby presenting a platform for next-generation reverse osmosis (RO) or nanofiltration (NF) membranes. Although theoretical investigations of great breadth and depth have been pursued to understand mass transport across the atomically thin materials, experimental efforts are required to engineer and tune nanopore structure in macroscopically large graphene membranes and understand the resulting transport characteristics. Moreover, the effects of interplay between graphene nanopore structure and porous support layer on membrane transport properties need to be considered to identify the structure-function relationship of the nanoporous graphene membranes. This thesis aims at controlling selective graphene nanopore structure for high permeability and selectivity and understanding the tunable membrane transport properties. A two-step process of ion bombardment and oxygen plasma is carried out to introduce a high density of nanopores in large-area graphene membranes. Pore creation parameters are thoroughly explored to investigate the influence on pore size and density. The resulting transport properties of graphene membranes can be tuned to achieve high permeance to water, comparable to that of NF membranes, and highly selective transport of monovalent ions over organic molecules. Nanopore structure introduced in graphene membranes is inspected to quantitatively relate the pore creation parameters with the resulting pore size distributions. A multiscale transport model is constructed to investigate the interplay between nanoporous graphene and support pores that governs osmotic water flux and diffusive solute transport. Internal concentration polarization of draw solutes estimated by the model suggests that achieving narrowly distributed graphene pores with minimal leakage is essential to optimal operation of high-flux asymmetric graphene membranes under forward osmosis. Sterically governed molecular assembly is explored to mitigate residual solute leakage across large, non-selective pores for enhanced membrane selectivity. High molecular weight polymers can electrostatically or covalently assemble across nanoscale defects of graphene to narrow down the effective pore size distribution, sterically and electrostatically hindering transport. Multi-step size-selective polyelectrolyte assembly enables >/=99% retention of divalent ions and organic molecules, promising the potential of graphene in desalination, nanofiltration or organic solvent nanofiltration (OSN). With experimental/theoretical means to characterize membrane structure and transport properties, this thesis forms the basis for regulating nanofluidic mass transport with tunable nanopores and developing atomically thin separation membranes with high selectivity and permeability.
Download or read book Sustainable Technologies for Water and Wastewater Treatment written by Noel Jacob Kaleekkal and published by CRC Press. This book was released on 2021-07-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Technologies for Water and Wastewater Treatment discusses relevant sustainable technologies for water and wastewater treatment pertaining to a nanoscale approach to water treatment and desalination, membrane-based technologies for water recovery and reuse, the energy and water nexus, degradation of organic pollutants, nascent technologies, bio and bio-inspired materials for water reclamation and integrated systems, and an overview of wastewater treatment plants. The book focuses on advanced topics including in situ generation of hydroxyl radicals, which can aid in the indiscriminate oxidation of any contaminant present in wastewater, making advanced oxidation processes commercially viable. Features: A comprehensive review of current and novel water and wastewater treatment technologies from a sustainability perspective All the sustainable technologies, such as desalination, wastewater treatment, advanced oxidation processes, hydrodynamic cavitation, membrane-based technologies, sonosorption, and electrospun fibers Discussion on reference materials for important research accomplishments in the area of water and environmental engineering Theoretical aspects covering principles and instrumentation A summary on sustainability, including life cycle assessment (LCA), energy balance and large-scale implementation of advanced techniques This book is aimed at professionals, graduate students, and researchers in civil, chemical, environmental engineering, and materials science.
Download or read book Membranes for Water Treatment written by Klaus-Viktor Peinemann and published by John Wiley & Sons. This book was released on 2010-11-29 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ready reference on Membrane Technologies for Water Treatment, is an invaluable source detailing sustainable, emerging processes, to provide clean, energy saving and cost effective alternatives to conventional processes. The editors are internationally renowned leaders in the field, who have put together a first-class team of authors from academia and industry to present a highly approach to the subject. The book is an instrumental tool for Process Engineers, Chemical Engineers, Process Control Technicians, Water Chemists, Environmental Chemists, Materials Scientists and Patent Lawyers.
Download or read book Nanostructured Materials for Treating Aquatic Pollution written by Gil Alberto Batista Gonçalves and published by Springer Nature. This book was released on 2019-11-21 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book report the advances in the synthesis of new nanomaterials for the remediation of natural waters, groundwaters, and wastewaters. The authors describe synthetic routes for the assembly of different nanomaterials for the removal of contaminants by adsorption, catalytic degradation, and antibacterial activity. The hazardous effects of nanomaterials in aquatic ecosystems are discussed. This book presents the trends in the development of advanced technologies available in the market based on nanomaterials for more efficient water remediation. The authors also discuss sustainable management of water resources according to the new technologies developed and the improved efficiency of remediation processes.
Download or read book Sustainable Nanomaterials for Biomedical Engineering written by Junaid Ahmad Malik and published by CRC Press. This book was released on 2023-05-12 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, nanomaterials have become one of the most dynamic exploration fields in the areas of engineering, technology, and science. This new volume focuses on the use of various bionanomaterials that can be introduced into the body as clinical devices for various medical purposes. The book also provides examples of cost-effective, sustainable alternatives to traditional medical procedures. The volume discusses how these materials have diverse applications in the biomedical fields, such as for cancer treatment, for orthopedic joint replacements, for medical diagnosis, for making bone plates, for wound healing, for nerve regeneration, for breast implants, in dental procedures, and so on. In addition, the book also covers some nonbiomedical applications of nanobiomaterials, such as, for example, to grow cells in a culture medium, as a blood protein test in laboratories, etc.
