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Supercritical Fluid Nanotechnology

Author: Concepcion Domingo Pascual

Publisher: CRC Press

Published: 2015-10-22

Total Pages: 560

ISBN-13: 981461341X

The environmental and climate program demands technological solutions in the chemical industry that incorporate prevention of pollution. Major advances are needed to reduce the use of organic solvents, such as methanol, toluene, xylene, methyl ethyl ketone, and dichloromethane, which account for 27 percent of total toxics release inventory chemical

Advanced Nanotechnology and Application of Supercritical Fluids

Author: Inamuddin

Publisher: Springer Nature

Published: 2020-07-27

Total Pages: 254

ISBN-13: 303044984X

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Globalization and industrialization involve a number of reactions, products, extractions, and separations that require the use of organic solvents. These solvents are responsible for a number of ecological concerns, including atmospheric and land toxicity. Conventional organic solvents are regarded as volatile organic compounds; some are even limited due to their potential for ozone layer depletion. While supercritical liquids exhibit physical properties that could make them ideal substitutes for these volatile compounds, there is particular interest in the use of carbon dioxide as a solvent of crude material. In particular, carbon dioxide has apparent ‘green’ properties, like its noncombustible nature, the fact that it is generally nonpoisonous, and its relative inertness. Thus, the use of supercritical carbon dioxide can provide practical improvements to the sustainability of industrial products and processes. This book provides in-depth literature in the area of industrial green processes, focusing on the separation, purification, and extraction of compounds utilizing supercritical carbon dioxide as a green solvent.

Rapid Production of Micro- and Nano-particles Using Supercritical Water

Author: Zhen Fang

Publisher: Springer Science & Business Media

Published: 2010-07-24

Total Pages: 109

ISBN-13: 3642129870

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This book details progress in use of supercritical water (SCW) to synthesize nano- and micro- oxides, inorganic salts and metal particles, and shows how polymer/biomass particles can be produced by the precipitation of solutes from SCW.

Supercritical Fluids: Nanotechnology and Select Emerging Applications

Author:

Publisher:

Published: 2006

Total Pages: 69

ISBN-13:

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In this paper, a selected list of emerging applications of supercritical fluids (SCFs) is presented. In particular, demonstrated facts for the promise of the nanoscale science and technology and its overlap or interface with the SCFs technology are presented. It is argued that nanoengineered materials at the nanoscale have mechanical, optical, chemical, and electrical properties quite different from the bulk material. Examples of enhanced performance of many such materials when they are used in practical applications are given. SCFs, in particular carbon dioxide, on account of their special properties such as zero surface tension, low viscosity, and high solubility, enable them to play a critical role in many advanced technology applications. For example, as miniaturization efforts approach the nanoscale, surface tension forces become an important factor in many nanotechnology processes such as lithography in the electronic industry. In particular, the zero-surface-tension property of the SCFs presents them as a natural choice for nanotechnology.

Supercritical Fluid Technology in Materials Science and Engineering

Author: Ya-Ping Sun

Publisher: CRC Press

Published: 2002-03-26

Total Pages: 600

ISBN-13: 0203909364

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This title analyzes the chemical reactions, structures and fundamental properties of supercritical fluid systems for the production of new compounds, nanomaterials, fibers, and films. It compiles contemporary research and technological advances for increased selectivity and reduced waste in chemical, industrial, pharmaceutical, and biomedical applications. Topics include fluid dynamics, catalysis, hydrothermal synthesis, surfactants, conducting polymers, crystal growth, and other aspects and applications of supercritical fluids.

Handbook on Supercritical Fluids

Author: Jane Osborne

Publisher: Nova Science Publishers

Published: 2014

Total Pages: 0

ISBN-13: 9781633219304

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Supercritical fluid carbon dioxide (sc-CO2) possesses both gas-like and liquid-like properties. It is capable of depositing nanoparticles in small structures and poorly wettable substrates. Deposition and array formation of metal and metal sulphide nanoparticles on various substrates using sc-CO2 as a medium has been a subject of considerable interest for researchers in nanomaterials area in recent years. This handbook begins by exploring nanoparticle deposition using supercritical fluid carbon dioxide. Further topics in this handbook include separation of oils using supercritical carbon dioxide; the application of an integrated supercritical extraction and impregnation process for incorporation of thyme extracts into different carriers; supercritical fluid extraction application on dairy products and by-products; and supercritical fluid technology applications in pharmaceutical drug formulations.

Nanotechnology in Drug Delivery

Author: Melgardt M. de Villiers

Publisher: Springer Science & Business Media

Published: 2008-10-29

Total Pages: 681

ISBN-13: 0387776680

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The reader will be introduced to various aspects of the fundamentals of nanotechnology based drug delivery systems and the application of these systems for the delivery of small molecules, proteins, peptides, oligonucleotides and genes. How these systems overcome challenges offered by biological barriers to drug absorption and drug targeting will also be described.

Supercritical Antisolvent Precipitation Process

Author: Diego T. Santos

Publisher: Springer Nature

Published: 2019-10-12

Total Pages: 82

ISBN-13: 3030269981

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This book provides deep insights on the fundamentals, applications and perspectives of the Supercritical AntiSolvent (SAS) Precipitation Process. Chapter 1 provides recent (2013-2018) reports on the use of supercritical CO2 (SC-CO2) antisolvent for micronization, coprecipitation and fractionation of high-value products for the food, cosmetic and pharmaceutical industries. Chapter 2 discusses another variant of the SAS precipitation process called Supercritical fluid extraction of emulsions (SFEE). This chapter provides recent data from 2016-2018 reports investigation of supercritical extraction of emulsions (SFEE) to encapsulate compounds of great interest to the food and non-food industry. Chapter 3 details the design and construction of a SAS Precipitation equipment. Chapter 4 presents experimental results regarding the validation of the supercritical particle formation equipment. Chapter 5 shows the effects of process parameters during particle precipitation using Combined High Turbulence Extraction Assisted by Ultrasound and Supercritical Antisolvent Fractionation (SAF) processes applied to semi-defatted annatto seeds, as a model raw material plant, were investigated. Chapter 6 shows experimental results regarding the process Ultrasound Emulsification Assisted by Nitrogen Hydrostatic Pressure (UEANHP), during the emulsification preparation step of the Supercritical Fluid Extraction of Emulsions (SFEE) process, one of the options of the SAS Precipitation-based process. Finally, Chaptesr 7 and 8 present some perspectives about the economics and process integration with other processes aiming the development of novel conceptual biorefinering approaches for plant materials valorization.

Supercritical Fluid Science and Technology

Author: Keith P. Johnston

Publisher:

Published: 1989

Total Pages: 568

ISBN-13:

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New directions in supercritical fluids science and technology, fluorescence spectroscopy studies of intermolecular interactions in supercritical fluids, solvation structure in supercritical fluid mixtures based on molecular distribution functions, gibbs-ensemble Monte Carlo simulations of phase equilibria in supercritical fluid mixtures, spectroscopic determination of solvent strength and structure in supercritical fluid mixtures, partition coefficients of polyethyle glycols in super critical carbon dioxide, experimental measurement of supercritical fluid-liquid phase equilibrium, vapor-liquid equilibria of fatty acid esters in supercritical fluids, four-phase equilibrium of two ternary organic systems with carbon dioxide, direct viscosity enhancement of carbon dioxide, inverse emulsion polymerization of acrylamide, interaction of polymers with near-critical carbon dioxide, fundamental kinetics of methanol oxidation in supercritical fluids, thermodynamic analysis of corrosion of iron alloys in supercritical water, electrochemical measurements of corrosion of iron alloys in supercritical water, phase and reaction equilibria considerations in the evaluation and operation of supercritical fluid reaction processes, kinetic model for supercritical delignification of wood, gas antisolvent recrystallization solids formation after the expansion of supercritical mixtures, food, pharmaceutical, and environmental applications, design of commercial plant.

Advanced Supercritical Fluids Technologies

Author: Igor Pioro

Publisher: BoD – Books on Demand

Published: 2020-05-20

Total Pages: 224

ISBN-13: 183880708X

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Using SuperCritical Fluids (SCFs) in various processes is not new, because Mother Nature has been processing minerals in aqueous solutions at critical and supercritical pressures for billions of years. Somewhere in the 20th century, SCFs started to be used in various industries as working fluids, coolants, chemical agents, etc. Written by an international team of experts and complete with the latest research, development, and design, Advanced Supercritical Fluids Technologies is a unique technical book, completely dedicated to modern and advanced applications of supercritical fluids in various industries.Advanced Supercritical Fluids Technologies provides engineers and specialists in various industries dealing with SCFs as well as researchers, scientists, and students of the corresponding departments with a comprehensive overview of the current status, latest trends and developments of these technologies.Dr Igor Pioro is a professor at the University of Ontario Institute of Technology, Canada, and the Founding Editor of the ASME Journal of Nuclear Engineering and Radiation Science.