Author: Robert M. LandisPublisher:
ISBN:
Category :
Languages : en
Pages : 194
Book Description
Synthesis and Characterization of Functionalized Mesoporous Silica for the Remediation of Heavy Metals from Aqueous Solution
Author: Robert M. LandisSynthesis and Application of Mesoporous Silica
Author: Xining ChenPublisher: LAP Lambert Academic Publishing
ISBN: 9783659609220
Category :
Languages : en
Pages : 224
Book Description
Mesoporous materials with well-defined pore size and structure have applications in a wide range of topics from catalysis, environment and medicine to electronics. This work presents the methods and procedures for preparing functional mesoporous materials for applications in the environment from removal of toxic metals to clean synthesis of fine chemicals. Magnetic mesoporous silica (magMCM-41) of large surface area (800 m2 g-1) and high magnetization (8.30 emu g-1) was prepared by grafting 10 nm magnetic iron oxide nanoparticles in the silica matrix, and this highly dispersible material can be easily separated from aqueous solution by a magnetic field. Functionalization of the surface with selected ligands and metal complexes creates powerful capabilities for chemical separation and catalysis. Fe3+-magMCM-41 prepared by grafting aminopropyls and then adsorbing Fe3+ was found to be a highly selective adsorbent which adsorbed only As(V) and Cr(VI) oxyanions (70 and 100 mg g-1, respectively) without any Cu(II). A series of salt-tolerant sorbents with designed functionalized groups were capable of removing 97 99% toxic heavy metals with a high Kd (distribution coefficient) value.
Functionalized Mesoporous Silica, MCM-41, and Their Application in Environmental Remediation of Selenium, Cadmium, and for Zinc Detection by Fluorescence, and
Author: Parul PalPublisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 328
Book Description
Within the past two decades ordered mesoporous silica materials have seen tremendous growth in its innovation and creativity with respect to its various applications. One class of materials, MCM-41, with large surface areas and pore size make them attractive as adsorbent materials. In addition, surface hydroxyl groups can be modified with organic functionalities. The pore volume after grafting of these groups is still large enough to carry out chemical reactions in the internal surface. It is this quality that has prompted us to study these materials and explore the covalent strategies of attaching new functional groups on the surface of the substrate, and subsequently test their abilities to: (a) Remove oxyanions of selenium from aqueous systems (b) Removal of cadmium, a heavy metal pollutant, in aqueous media, and (c) Detect zinc by fluorescence in order to develop nanoporous bio-sensors.
INTEGRATED APPROACH ON SYNTHESIS & CHARACTERIZATION OF INDUSTRIAL-AGRO WASTE NANOCOMPOSITE FOR WATER TREATMENT
Author: SHIVANGI OMERPublisher: Book Rivers
ISBN: 9355151705
Category : Antiques & Collectibles
Languages : en
Pages : 290
Book Description
Design, Synthesis and Characterization of Functionalized Mesoporous Silica Nanospheres for Biomedical Applications
Author: 林芝宇Synthesis and Applications of Mesoporous Materials
Author: Xinqing ChenPublisher: LAP Lambert Academic Publishing
ISBN: 9783659677304
Category :
Languages : en
Pages : 224
Book Description
Mesoporous materials with well-defined pore size and structure have applications in a wide range of topics from catalysis, environment and medicine to electronics. This work presents the methods and procedures for preparing functional mesoporous materials for applications in the environment from removal of toxic metals to clean synthesis of fine chemicals.Magnetic mesoporous silica (magMCM-41) of large surface area (800 m2 g-1) and high magnetization (8.30 emu g-1) was prepared by grafting 10 nm magnetic iron oxide nanoparticles in the silica matrix, and this highly dispersible material can be easily separated from aqueous solution by a magnetic field.Functionalization of the surface with selected ligands and metal complexes creates powerful capabilities for chemical separation and catalysis. Fe3+-magMCM-41 prepared by grafting aminopropyls and then adsorbing Fe3+ was found to be a highly selective adsorbent which adsorbed only As(V) and Cr(VI) oxyanions (i.e. 70 and 100 mg g-1, respectively) without any Cu(II). Meanwhile, the catalytic performances of modified materials were tested for Knoevenagel condensation reactions. The result showed the conversion excessed 97%.
Synthesis & Characterization of Sulfo-Functionalized Nanoporous Silica
Author: Fei-Yee YeohPublisher: LAP Lambert Academic Publishing
ISBN: 9783848483419
Category :
Languages : en
Pages : 116
Book Description
This book is an edited collection of authors papers regarding research on sulfo-functionalized nanoporous silica, published with various renowned journals. It provides in-depth scientific research findings on synthesis and characterization of sulfo-functionalized nanoporous silica typically with pore sizes in mesopores and micropores range. Detailed synthesis and characterization techniques are recorded with insightful discussion and findings. The use of ammonia adsorption microcalometry for characterization and application of such materials could also be found in the book. Besides synthesis with conventional route, the author also found a novel route to produce this material, which is noted in this book as Facile Synthesis of Sulfo functionalized mesoporous silica. This book would be helpful in giving a comprehensive understanding to undergraduate and postgraduate students, as well as academics and researchers who are involved in materials sciences and chemical engineering research.
Bio-organic Amendments for Heavy Metal Remediation
Author: Allah DittaPublisher: Elsevier
ISBN: 0443216118
Category : Science
Languages : en
Pages : 756
Book Description
Bio-organic Amendments for Heavy Metal Remediation: Water, soil and plant focuses on these core continuum media to explore remediation options using microbial, organic and combined approached. A volume in the Plant Biology, Sustainability and Climate Change series, this book offers a comprehensive view of techniques and approaches for addressing contamination by heavy metals.As anthropogenic activities increasingly negatively impact natural resources, there has been significant disturbance of water, soil, and plant continuum due to the accumulation of heavy metals. The bioaccumulation of heavy metals in the food chain could pose life-threatening effects on plants as well as humans, and there is need to find effective and sustainable remediation options. The application of bio-organic amendments could serve as a sustainable solution to this problem.Employing microbial, organic and combined approaches to reduce the accumulation of heavy metals in the food chain ultimately would lead to the production of safe food for humans.This book provides a comprehensive view of the challenge with a focus on the bioremediation of heavy metals contamination using ecotechnological approaches to protecting the soil, water and plant continuum. Highlights remediation techniques/approaches for heavy metals under water, soil and plant continuums Presents case-studies for real-world insights as well as current practices Includes regulatory aspects for ensuring safe implementation
Advanced Nanomaterials for Wastewater Remediation
Author: Ravindra Kumar GautamPublisher: CRC Press
ISBN: 1498753353
Category : Science
Languages : en
Pages : 439
Book Description
Contamination of aqueous environments by hazardous chemical compounds is the direct cause of the decline of safe clean water supply throughout the globe. The use of unconventional water sources such as treated wastewater will be a new norm. Emerging nanotechnological innovations have great potential for wastewater remediation processes. Applications that use smart nanomaterials of inorganic and organic origin improve treatment efficiency and lower energy requirements. This book describes the synthesis, fabrication, and application of advanced nanomaterials in water treatment processes; their adsorption, transformation into low toxic forms, or degradation phenomena, and the adsorption and separation of hazardous dyes, organic pollutants, heavy metals and metalloids from aqueous solutions. It explains the use of different categories of nanomaterials for various pollutants and enhances understanding of nanotechnology-based water remediation to make it less toxic and reusable.
Frontier Technology for Water Treatment and Pollutant Removal
Author: Puangrat KajitvichyanukulPublisher: IWA Publishing
ISBN: 1789061237
Category : Science
Languages : en
Pages : 242
Book Description
Frontier technology in water treatment and pollutant removal is needed not only for maximizing water reuse but also for the rapid detection of contaminants in the recycled water. The UN announced the years 2018 to 2028 as the ‘International Decade for Action–Water for Sustainable Development’. To realize this mission, innovative and frontier technologies for water treatment and pollutant removal are important components. This book aims to serve as a platform for updating the scientific community with recent progress in this area, covering frontier technologies in analytical technique, physicochemical treatment, chemical treatment, and biological treatment. In Focus – a book series that showcases the latest accomplishments in water research. Each book focuses on a specialist area with papers from top experts in the field. It aims to be a vehicle for in-depth understanding and inspire further conversations in the sector.