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Effects Of Activated Carbon Surface Chemistry And Pore Structure On The Adsorption Of Methyl Tertiary Butyl Ether And Trichloroethene From Natural Water
Download Effects Of Activated Carbon Surface Chemistry And Pore Structure On The Adsorption Of Methyl Tertiary Butyl Ether And Trichloroethene From Natural Water full books in PDF, epub, and Kindle. Read online Effects Of Activated Carbon Surface Chemistry And Pore Structure On The Adsorption Of Methyl Tertiary Butyl Ether And Trichloroethene From Natural Water ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Methyl Tertiary-butyl Ether and Trichloroethene from Natural Water by : Patricia Ann Quinlivan
Download or read book Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Methyl Tertiary-butyl Ether and Trichloroethene from Natural Water written by Patricia Ann Quinlivan and published by . This book was released on 2001 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: activated carbon, chemical treatment, surface treatment, adsorption properties, microporosity.
Book Synopsis Effects of Activated Carbon Surface Chemistry and Pore Structure on the Absorption of Methyl Tertiary-Butyl Ether and Trichloroethene from Natural Water by :
Download or read book Effects of Activated Carbon Surface Chemistry and Pore Structure on the Absorption of Methyl Tertiary-Butyl Ether and Trichloroethene from Natural Water written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Activated carbon adsorption is the best available treatment technology for thecontrol of many objectionable trace organic compounds. Activated carbons are frequentlycharacterized by the iodine number and BET surface area, but these parameters do notcorrelate well with trace organic compound removal from natural water. Therefore, theobjective of this research was to develop activated carbon selection criteria that assure theeffective removal of trace organic contaminants from natural water and to base theselection criteria on the adsorbent's pore structure and surface chemistry. Tosystematically evaluate pore structure and surface chemistry effects, a matrix of activatedcarbon fibers (ACFs) with three activation levels and four surface chemistry levels wasstudied. To evaluate whether adsorption trends established for ACFs were also valid forgranular activated carbon (GAC), ACF results were compared with those obtained forthree commercially available GACs. Adsorption capacities were determined for naturalorganic matter (NOM), for relatively hydrophilic methyl tertiary-butyl ether (MTBE) andrelatively hydrophobic trichloroethene (TCE) in organic-free water, and for MTBE andTCE in the presence of NOM. NOM isotherms showed that DOC adsorption occurredprimarily in pores with diameters in the 11 to 500 Å range and that electrostaticinteractions between NOM and the carbon surface played a role in NOM adsorption. According to both single-solute isotherms and micropollutant isotherms in the presence of NOM, hydrophobic adsorbents more effectively removed TCE and MTBE thanhydrophilic adsorbents. Effective adsorbents for drinking water treatment shouldtherefore contain little oxygen and nitrogen whose presence increases the polarity of theadsorbent surface. Based on the elemental composition of the low-ash carbons evaluatedin this study, activated carbons should have oxygen and nitrogen contents that sum to nomore than 2 to 3 mmol/g to assure sufficient hydrophobicity. In a.
Book Synopsis Effects of Activated Carbon Characteristics on Organic Contaminant Removal by : Detlef R. U. Knappe
Download or read book Effects of Activated Carbon Characteristics on Organic Contaminant Removal written by Detlef R. U. Knappe and published by IWA Publishing. This book was released on 2004-01-01 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many water treatment plants need to remove objectionable trace organic compounds, and activated carbon adsorption is often the best available technology. Utilities face the challenge of having to choose from a large variety of activated carbons, and iodine number or BET surface area values are often utilized in the selection process. Although neither parameter correlates well with adsorption capacities, alternative activated carbon selection criteria based on fundamental adsorbent and adsorbate properties are lacking to date. The first objective of this research was to systematically evaluate the effects of activated carbon pore structure and surface chemistry on the adsorption of two common drinking water contaminants: the relatively polar fuel oxygenate methyl tertiary-butyl ether (MTBE) and the relatively nonpolar solvent trichloroethene (TCE). The second objective was to develop simple descriptors of activated carbon characteristics that facilitate the selection of suitable adsorbents for the removal of organic contaminants from drinking water.Originally published by AwwaRF for its subscribers in 2003 This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
Book Synopsis Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Trace Organic Contaminants from Aqueous Solution by :
Download or read book Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Trace Organic Contaminants from Aqueous Solution written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal objectives of this research were (1) to identify activated pore structure and surface chemistry characteristics that assure the effective removal of trace organic contaminants from aqueous solution, and (2) to develop a procedure to predict the adsorption capacity of activated carbons from fundamental adsorbent and adsorbate properties. To systematically evaluate pore structure and surface chemistry effects on the adsorption of organic micropollutants from aqueous solution, a matrix of activated carbon fibers (ACFs) with three activation levels and four surface chemistry levels was prepared and characterized. In addition, three commercially available granular activated carbons (GACs) were studied to verify whether correlations developed for the ACF matrix are valid for adsorbents that are typically used for water treatment. BET surface area, pore size distribution, elemental composition, point of zero charge and infrared spectroscopy data were obtained to characterize the adsorbents. The results showed that the ACF matrix prepared in this study permits a fairly independent evaluation of surface chemistry and pore structure effects on organic contaminant adsorption from aqueous solution. Methyl tertiary-butyl ether (MTBE), a relatively hydrophilic adsorbate, and trichloroethene (TCE), a relatively hydrophobic adsorbate, served as adsorbate probes. To evaluate the effects of natural organic matter (NOM) on MTBE and TCE adsorption capacities, isotherm experiments were conducted in ultrapure water and Sacramento-San Joaquin Delta water. With respect to surface chemistry, both single-solute isotherms and isotherms in the presence of NOM indicated that hydrophobic adsorbents more effectively removed TCE and MTBE from aqueous solution than hydrophilic adsorbents. Enhanced water adsorption on polar surface sites explained the poorer performance of the hydrophilic adsorbents. Based on the elemental composition of the low-ash carbons evaluated in this study, act.
Book Synopsis Effect of Surface Groups on Adsorption of Pollutants by : Robert W. Coughlin
Download or read book Effect of Surface Groups on Adsorption of Pollutants written by Robert W. Coughlin and published by . This book was released on 1970 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alternative Adsorbents for the Removal of Polar Organic Contaminants by : Detlef R. U. Knappe
Download or read book Alternative Adsorbents for the Removal of Polar Organic Contaminants written by Detlef R. U. Knappe and published by American Water Works Association. This book was released on 2007 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project studies the application of high-silica zeolites for the removal of polar organic contaminants, i.e., antimicrobial compounds and the fuel additive methyl tertiary-butyl ether (MTBE), from drinking water. Recently published data show that high-silica zeolites, a class of crystalline adsorbents with well defined pore sizes, exhibit considerably larger single-solute MTBE adsorption capacities than activated carbons and carbonaceous resins. The effectiveness of high-silica zeolites is compared to that of activated carbons and a carbonaceous resin.
Book Synopsis Adsorption Processes for Water Treatment by : Samuel D. Faust
Download or read book Adsorption Processes for Water Treatment written by Samuel D. Faust and published by Elsevier. This book was released on 2013-10-22 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption Processes for Water Treatment discusses the application of adsorption in water purification. The book is comprised of 10 chapters that detail the carbon and resin adsorptive processes for potable water treatment. The text first covers the elements of surface chemistry and then proceeds to discussing adsorption models. Chapter 3 tackles the kinetics of adsorption, while Chapter 4 deals with batch systems and fixed fluid beds. Next, the book talks about the physical and chemical properties of carbon. The next two chapters discuss the adsorption of organic compounds and the removal of inorganic compounds, respectively. The eighth chapter presents operational, pilot plant, and case studies. Chapter 9 discusses the biological activated carbon treatment of drinking water, and Chapter 10 covers the adsorption of macroreticular resins. The book will be of great use to both researchers and professionals involved in the research and development of water treatment process.
Book Synopsis Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Trace Organic Contaminants from Aqueous Solution by : Lei Li
Download or read book Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Trace Organic Contaminants from Aqueous Solution written by Lei Li and published by . This book was released on 2002 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: trace organic contaminants, pore structure, surface chemistry, adsorbent.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Surface and Colloid Science by : P. Somasundaran
Download or read book Encyclopedia of Surface and Colloid Science written by P. Somasundaran and published by CRC Press. This book was released on 2006 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Surface Chemistry and Porsity of Activated Carbons on the Adsorption of Water and Organic Pollutants by : Issa I. Salame
Download or read book Effect of Surface Chemistry and Porsity of Activated Carbons on the Adsorption of Water and Organic Pollutants written by Issa I. Salame and published by . This book was released on 2002 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Water Works Association Publisher :McGraw Hill Professional ISBN 13 :0071630104 Total Pages :1696 pages Book Rating :4.0/5 (716 download)
Book Synopsis Water Quality & Treatment: A Handbook on Drinking Water by : American Water Works Association
Download or read book Water Quality & Treatment: A Handbook on Drinking Water written by American Water Works Association and published by McGraw Hill Professional. This book was released on 2010-12-06 with total page 1696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive water quality and treatment resource--fully revised and updated Comprehensive, current, and written by leading experts, Water Quality & Treatment: A Handbook on Drinking Water, Sixth Edition covers state-of-the-art technologies and methods for water treatment and quality control. Significant revisions and new material in this edition reflect the latest advances and critical topics in water supply and treatment. Presented by the American Water Works Association, this is the leading source of authoritative information on drinking water quality and treatment. NEW CHAPTERS ON: Chemical principles, source water composition, and watershed protection Natural treatment systems Water reuse for drinking water augmentation Ultraviolet light processes Formation and control of disinfection by-products DETAILED COVERAGE OF: Drinking water standards, regulations, goals, and health effects Hydraulic characteristics of water treatment reactors Gas-liquid processes and chemical oxidation Coagulation, flocculation, sedimentation, and flotation Granular media and membrane filtration Ion exchange and adsorption of inorganic contaminants Precipitation, coprecipitation, and precipitative softening Adsorption of organic compounds by activated carbon Chemical disinfection Internal corrosion and deposition control Microbiological quality control in distribution systems Water treatment plant residuals management
Book Synopsis Impact of Surface Chemistry on Adsorption: Tailoring of Activated Carbon by : Morgana T. Bach
Download or read book Impact of Surface Chemistry on Adsorption: Tailoring of Activated Carbon written by Morgana T. Bach and published by . This book was released on 2007 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work summarizes research into the impact of the surface chemistry of activated carbon on the water treatment phenomena of pH excursions, the tailoring of activated carbon through manipulation of the dissolved oxygen (DO) content of the water used to create steam for activation, and, most importantly, the impact of these changes in surface chemistry on adsorption.
Book Synopsis Polyelectrolyte Adsorption by Activated Carbon and the Effects of Preloading on Trichloroethylene Adsorption by : James Edward Kilduff
Download or read book Polyelectrolyte Adsorption by Activated Carbon and the Effects of Preloading on Trichloroethylene Adsorption written by James Edward Kilduff and published by . This book was released on 1995 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Activated Carbon Surface Chemistry Modification on the Adsorption of Mercury from Aqueous Solution by : Emily Kaye Faulconer
Download or read book Effects of Activated Carbon Surface Chemistry Modification on the Adsorption of Mercury from Aqueous Solution written by Emily Kaye Faulconer and published by . This book was released on 2012 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg), a naturally occurring element, is toxic and can lead to negative health impacts for humans and ecosystems. Activated carbon adsorption is effective in treating Hg-laden aqueous effluent for safe discharge. Two modifications of commercially available activated carbon were investigated: iron impregnation to allow for magnetic sorbent recapture and wet chemical oxidation to enhance aqueous Hg capture. The modified carbons were characterized by nitrogen adsorption-desorption, XRD, pHpzc, vibrating sample magnetometry, elemental analysis, and total acidity titration. The 3:1 C:Fe magnetic powdered activated carbon (MPAC) retained a high surface area of 790 m2/g and was 95% magnetically recoverable, with the iron present primarily as maghemite. The characteristics of the surface oxygen modified carbons varied based on the nature of the modifying reagent and its concentration. The modified carbons were applied to trace level Hg solutions (100 μg/L). The 3:1 MPAC achieved the highest adsorption capacity, reaching 91% Hg removal with 2% volatilized and 84% adsorbed. Adsorption occurs primarily as chemisorption, thus allowing for non-hazardous residuals disposal until reaching a loading of greater than 800 μg Hg/ g MPAC.
Book Synopsis The Influence of Activated Carbon Surface Chemistry and Solvent Interactions on the Adsorption of 2-methylisoborneol by : Robert Considine
Download or read book The Influence of Activated Carbon Surface Chemistry and Solvent Interactions on the Adsorption of 2-methylisoborneol written by Robert Considine and published by . This book was released on 1997 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
