Download or read book Application of Microwave Technology to Effect On site Regeneration of GAC written by K. C. Mahesh and published by . This book was released on 1990 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The off-site regeneration of granulated activated charcoal(GAC), spent as a result of stripping of organics from aqueous waste streams, represents a burdensome cost both because of the actual cost of regeneration and legal liability associated with shipping a hazardous waste off-site: that liability is reflected in huge potential costs associated with mishaps enroute for the self-insured or high premiums paid to the casualty insurance companies for those generators that are insured by third parties. Thus there is a need for the development of a process to effect on-site regeneration of spent GAC cost-effectively. This thesis mainly focuses on the technical feasibility of microwave treatment to effect regeneration of GAC. This study has shown that microwave treatment of spent GAC can effect the on-site regeneration in a potentially cost-effective process. The regeneration of GAC with an adsorbed organic compound was studied. The compound was a toxic dye, namely, methylene blue. This is a polyaromatic compound containing chlorine, sulfur, and nitrogen atoms. It is a chloride salt. it is non-volatile and decomposes at 190°C. Our experiments showed that GAC with methylene blue adsorbed can be regenerated up to 100%; thus, even when a non-volatile compound is adsorbed on GAC, microwave technology can effect regeneration. The regeneration is effected utilizing microwave technology in a manner consistent with its application on-site, scaled-up. The regenerability of spent GAC was investigated for three successive cycles of adsorption and regeneration. The results showed a good regeneration capacity, even at the end of fourth adsorption and, on an average, 98.2% removal of the adsorbed organic was achieved by microwave treatment. The process appears to proceed by the following stages: water in the GAC pores are directly heated up by the microwaves leading to volatilization; the steam, thus formed, forces the air out of the pores creating an inert atmosphere; the GAC, a strong microwave energy absorber, heats the organic to its pyrolysis temperature; the pyrolyzed organic fuses into the GAC skeleton. This mechanism explains the observed results. More importantly, this mechanism suggests that the most intractable soil contaminants, namely, dioxins and PCBs, can be treated by microwave technology. Assuming that soil and GAC behave similarly, it is possible that the aforementioned contaminants which are polyaromatic compounds will pyrolyze. This investigation is suggested, but not undertaken, in this thesis.
Download or read book Work Implementation Plan Demonstration Of Microwave Regenerated Granular Activated Carbon McClellan Air Force Base Sacramento California written by and published by . This book was released on 1998 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: In accordance with contract No. F04699-97-D-0023, Delivery Order No. 3004, Metcalf & Eddy, Inc. (M & E) has been authorized to test microwave regenerated granular activated carbon (GAC) as a treatment technology for vapor phase contamination remediation at McClellan Air Force Base (AFB). M & E is teamed with a specialty subcontractor, CHA Corporation, who has previous experience in implementing the microwave regenerated GAC technology. This document presents the test objectives, test procedures, sampling and analytical methods, quality assurance/quality control procedures, and health and safety issues related to the test.
Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Plenum Publishing Corporation. This book was released on 1992 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses Listed by Discipline: Aerospace Engineering. Agricultural Economics, Sciences and Engineering. Architechtural Engineering and Urban Planning. Astronomy. Astrophysics. Ceramic Engineering. Communications Engineering and Computer Science. Cryogenic Engineering. Electrical Engineering. Engineering Mechanics. Engineering Physics. Engineering Science. Fuels, Combustion, and Air Pollution. General and Environmental Engineering. Geochemistry and Soil Science. Geological Sciences and Geophysical Engineering. Geology and Earth Science. Geophysics. Industrial Engineering. Marine and Ocean Engineering. Materials Science and Engineering. Mechanical Engineering and Bioengineering. Metallurgy. Meteorology and Atmospheric Science. 17 additional disciplines. Index.
Download or read book Microwave Processing of Materials written by and published by . This book was released on 1994 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effluent Dye Removal by Microwave Assisted Activated Carbon written by Rehab Abdelghaffar and published by Springer Nature. This book was released on 2023-10-13 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the potential of advanced microwave techniques, specifically microwave-assisted pyrolysis, for the production, adsorption, and regeneration of activated carbon (AC) as a promising solution to address wastewater pollution caused by dyes. The author begins with a chapter devoted to the environmental implications of water pollution and emphasizes the characteristics of dyes and various treatment techniques for their removal. The advantages and disadvantages of commercially available activated carbon are also discussed, along with the determinants for effective adsorption using high-quality activated carbon. Additionally, the chapter delves into the different types of adsorbents, including agricultural and industrial waste, as well as bioadsorbents such as microorganisms. In Chapter 2, readers will find the latest trends in using microwave techniques for the activation process. In this chapter, the author elucidates the characteristics and mechanism of microwave heating and compares it with conventional heating methods. The advantages of microwave techniques, such as improved activation procedures and the influence of different factors, are explored. Various modeling and optimization approaches for adsorption and different techniques for analyzing the surface chemistry of activated carbons are also discussed. Furthermore, the chapter showcases the applications of microwave-assisted activated carbon for dye removal. The book closes with a chapter devoted to the recycling and regeneration of spent activated carbon (SAC) using microwave techniques. In this chapter, the author examines the procedures for SAC regeneration through microwave-assisted pyrolysis and highlights the advantages over conventional heating methods. The applications of microwave-assisted activated carbon regeneration and other miscellaneous technologies utilizing microwave heating for AC production and SAC regeneration are also explored. Given its breadth, this book is a valuable resource for researchers, professionals, and policymakers in the field of environmental science and engineering.
Download or read book Issues in Industrial Applied and Environmental Chemistry 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Industrial, Applied, and Environmental Chemistry: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Synthetic Organic Chemistry. The editors have built Issues in Industrial, Applied, and Environmental Chemistry: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Synthetic Organic Chemistry in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Industrial, Applied, and Environmental Chemistry: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Water Resources and Environment written by Miklas Scholz and published by CRC Press. This book was released on 2015-11-17 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2015 International Conference on Water Resource and Environment (WRE2015) aims to provide a platform where scholars from different countries can exchange ideas, opinions and views. This book is divided into four main themes:1. Hydrology and water resources;2. Water pollution; 3. Water treatment methods, and4. Freshwater ecosystems. Exploring to
Download or read book Microwave Chemistry written by Giancarlo Cravotto and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-09-25 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave Chemistry has changed the way to work in chemical laboratories and is an established state-of-the-art technology to accelarate and enhance chemical processes. This book not only gives an overview of the technology, its historical development and theoretical background, but also presents its exceptionally broad spectrum of applications. Microwave Chemistry enables graduate students and scientist to learn and apply its methods successfully.
Download or read book Journal of the Air Waste Management Association written by and published by . This book was released on 2000 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of MTBE and Other Gasoline Oxygenates written by Halim Hamid and published by CRC Press. This book was released on 2004-03-11 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook presents the outlook for future production and consumption of MTBE and other oxygenates worldwide and studies new catalytic systems and modern methods for the synthesis and commercial production of methyl tertiary-butyl ether (MTBE) and related ethers. The scope of this sophisticated guide extends from process chemistry fundamentals and reaction kinetics to environmental remediation technologies and industry responses to conflicting calls for MTBE phase-out and higher-octane products. Well-illustrated with over 200 figures and tables, this authoritative Handbook details bioremediation, air stripping, and oxidation and adsorption processes for MTBE removal.
Download or read book Removal of Siloxane and H2S from Biogas Using Microwave Energy written by Mark Rawson and published by . This book was released on 2012 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Remediation Technologies for Emerging Pollutants in Aqueous Environment written by Mohammad Hadi Dehghani and published by Elsevier. This book was released on 2023-09-12 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Technologies for Remediation of Emerging Pollutants from Aqueous Environment compiles and collates advanced technologies for the purification of water and wastewater. The book covers the biological purification of wastewater, the use of adsorbents for decontamination of water, the role of membrane technology and its composites for removing emerging pollutants, and applications of advanced oxidation processes (AOP) for removal of emerging pollutants. This resource provides a single source solution to academicians and young researchers by assembling the latest information on the application of the conventional and non-conventional in water and wastewater purification. - Presents global impacts of pollutants in the water environment, including organic pollutants, inorganic pollutants and biological contamination - Compares removal mechanisms of emerging pollutants by different purification technologies - Applies conventional and non-conventional techniques to water and wastewater purification processes
Download or read book Microwaves Theory and Application in Materials Processing written by and published by . This book was released on 1997 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1991 consist of proceedings of the Symposium on Microwaves: Theory and Application in Materials Processing; 1993-1995, Microwaves: Theory and Application in Materials Processing; 1997- , World Congress on Microwave and Radio Frequency Processing.
Download or read book Proceedings 1992 Asia Pacific Microwave Conference written by and published by . This book was released on 1992 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1997 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Powder Surface Area and Porosity written by S. Lowell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth of interest in powders and their surface properties in many diverse industries prompted the writing of this book for those who have the need to make meaningful measurements without the benefit of years of experience. It is intended as an introduction to some of the elementary theory and experimental methods used to study the surface area, porosity and density of powders. It may be found useful by those with little or no training in solid surfaces who have the need to quickly learn the rudiments of surface area, density and pore-size measurements. Syosset, New York S. Lowell May, 1983 J. E. Shields Xl List of symbols Use of symbols for purposes other than those indicated in the following list are so defined in the text. Some symbols not shown in this list are defined in the text. d adsorbate cross-sectional area A area; condensation coefficient; collision frequency C BET constant c concentration D diameter; coefficient of thermal diffusion E adsorption potential f permeability aspect factor F flow rate; force; feed rate 9 gravitational constant G Gibbs free energy GS free surface energy h heat of immersion per unit area; height H enthalpy Hi heat of immersion Hsv heat of adsorption BET intercept; filament current k thermal conductivity; specific reaction rate K Harkins-Jura constant I length L heat of liquefaction M mass M molecular weight n number of moles N number of molecules; number of particles N Avagadro's number .
Download or read book Abstracts written by Materials Research Society. Meeting and published by . This book was released on 1992 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
