Approx.480 pagesApprox.480 pages

Here is the first book devoted completely to inorganic membrane separations and applications. It provides detailed information on all aspects of the development and utilization of both commercial and developmental inorganic membranes and membrane-based processes, pointing out their key advantages and limitations as separation tools. Characteristics, technological advances, and future applications of inorganic membranes are discussed in depth. An overview of the origins of these membranes provides a basis for understanding emerging technologies in the field. Coverage of thermal, chemical, surface, and mechanical properties of inorganic membranes includes discussion of pore diameter, thickness, and membrane morphology. You'll gain valuable insights into membrane modification, as well as the design and operation of membrane filtration units. Also included are sections on how to analyze mechanisms that affect flux feature models for prediction of micro- and ultrafiltration flux that help you minimize flux decline. Descriptions of cross-flow membrane filtration and common operating configurations clarify the influence of important operating parameters on system performance. Parameters influencing solute retention properties during ultrafiltration are identified and discussed or treated in detail.

Doctoral Thesis / Dissertation from the year 2011 in the subject Chemistry - Materials Chemistry, East China University of Science and Technology (-), language: English, abstract: Considerable effort has been made to design, fabricate, and manipulate nanostructured materials by innovative approaches. The precise control of nanoscale structures will pave the way not only for elucidating unique size/shape dependent physicochemical properties but also for realizing new applications in science and technology. Nanotechnology offers unprecedented opportunities for improving our daily lives and the environment in which we live. This thesis mainly describes recent progress in the design, fabrication, and modification of nanostructured semiconductor materials for environmental applications. The scope of this thesis covers TiO2, Bi2O3 and BiOCl materials, focusing particularly on TiO2-based nanostructures (e.g., pure, doped, coupled, mesoporous, hierarchically porous, and ordered mesoporous TiO2). Mesoporous titania is of particular interest since this class of materials possesses well-defined porosity and large specific surface areas. For photocatalytic degradation of organics, these desirable properties are anticipated to improve the efficiency. So in the first part of work, I have synthesized the mesoporous titania by using poly ethylene glycol as a template in dilute acetic acid aqueous solution by hydrothermal process and investigated the effect of PEG molecular weights and thermal treatment on the resultant structure and photocatalytic activity. When the molecular weights of PEG vary from 600 to 20,000, the particle sizes of mesoporous-TiO2 structure decrease from 15.1 to 13.3 nm and mean pore sizes increase from 6.9-10.6 nm. The activities of these mesoporous-TiO2 photocatalysts prepared by using PEG are evaluated and compared with Degussa P-25 using chloro-phenol as a testing compound. [...]

Proceedings of the Asian International Conference on Advanced Materials (AICAM 2005), Beijing, China, 3-5 November 2005

Explore the Properties of Today's Widely Used Nanomaterials— and Assess Their Potentially Harmful Effects on the Environment Environmental Nanotechnology is the first book to assist you in both understanding the properties of new nanomaterial-centered technology and assessing the potentially harmful effects these materials may have on the environment. Written by a team of 29 leading experts from around the world, this comprehensive book presents cutting-edge coverage of the fabrication, characterization, and measurement of nanomaterials…emerging markets for nanomaterials…nanotechnologies in the energy industry…nanotechnologies for environmental quality…nanotechnology transport and fate in the environment…toxicological impacts of nanomaterials…and much more. Filled with detailed illustrations, Environmental Nanotechnology features: State-of-the-art techniques for the characterization and measurement of nanomaterials The latest findings on the transport and fate of nanomaterials in the environment Nanotechnologies for energy production, storage, and distribution In-depth analyses of the ecotoxicological impacts of nanomaterials New methods for developing nanomaterials with less environmental risk Inside This Landmark Environmental Engineering Guide _ • Nanomaterials: New Challenges and Opportunities • Fabrication of Nanomaterials • Characterization and Measurement of Nanomaterials • Emerging Markets for Nanomaterials • Nanomaterial-Enabled Technologies for Energy Production, Storage, and Distribution • Nanomaterial-Enabled Technologies for Environmental Quality • Nanomaterial Transport and Fate in the Environment • Ecotoxicological Impacts of Nanomaterials • Toxicological Impacts of Nanomaterials

The practical aspects of development, design, and operation are stressed, and some theory is included to provide the necessary insight for a particular operation. Problems addressed are the collection of pilot data, choice of scale-up parameters, selection of the right piece of equipment, pinpointing of likely trouble spots, and methods for troubleshooting.

Extensively revised and featuring new material, this timely, advanced resource covers the impacts of nanomaterials on organisms and ecosystems and their applications within industry. Cowritten by leaders of two of the most prominent research groups in the world considering the effects of nanomaterials on the environment, the second edition of Environmental Nanotechnology addresses the cutting-edge advances in this area. There is now much more known about the impacts of nanomaterials on organisms and ecosystems. Methods have been developed where there were few accepted procedures in the past. Thinking has evolved to consider the life cycle effects of nanomaterial production, and tools for risk forecasting are now under development. There has also been some experience among academics in using this book as the basis for new courses on Environmental Nanotechnology. Three new chapters cover the life cycle of nanomaterial fabrication and use and estimating nanomaterial exposure in the environment. A systematic discussion of the effects of nanomaterials on organisms and ecosystems is included, where the previous edition was largely limited to speculation. Features 75% new material New chapter on the life cycle aspects of nanomaterial fabrication and use Two new chapters on estimating nanomaterial exposure in the environment: implications that explore nanotoxicology; exposure estimation Contains end-of-chapter problems and questions