Author: Cuneyt Ali FeizoulofPublisher:
ISBN:
Category :
Languages : en
Pages : 176
Book Description
The Effect of Activated Carbon Surface Chemistry on Adsorption of P-nitrophenol
Author: Cuneyt Ali FeizoulofPublisher:
ISBN:
Category :
Languages : en
Pages : 176
Book Description
Activated Carbon: Surface Chemistry and Adsorption from Solution
Author: James S. MattsonPublisher:
ISBN:
Category : Science
Languages : en
Pages : 256
Book Description
Effect of Surface Groups on Adsorption of Pollutants
Author: Robert W. CoughlinPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 44
Book Description
Effects of Activated Carbon Characteristics on Organic Contaminant Removal
Author: Detlef R. U. KnappePublisher: IWA Publishing
ISBN: 1843398419
Category : Science
Languages : en
Pages : 100
Book Description
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
Adsorption Technology in Water Treatment
Author: Eckhard WorchPublisher: Walter de Gruyter
ISBN: 3110240238
Category : Science
Languages : en
Pages : 344
Book Description
Adsorption processes have played a central role in water treatment for many years but their importance is on the rise with the continuous discoveries of new micropollutants in the water cycle (pharmaceuticals for example). In addition to the classical application in drinking water treatment, other application fields are attracting increasing interest, such as wastewater treatment, groundwater remediation, treatment of landfill leachate, and so on. Based on the author's long-term experience in adsorption research, the scientific monograph treats the theoretical fundamentals of adsorption technology for water treatment from a practical perspective. It presents all the basics needed for experimental adsorption studies as well as for process modelling and adsorber design. Topics discussed in the monograph include: introduction into basic concepts and practical applications of adsorption processes; adsorbents and their characterisation, single and multi-solute adsorption equilibria, adsorption kinetics, adsorption dynamics in fixed-bed adsorbers and fixed-bed adsorber design, regeneration and reactivation of adsorbents, introduction into geosorption processes in bank filtration and groundwater recharge. According to the increasing importance of micropollutants in the water cycle, particular attention is paid to their competitive adsorption in presence of background organic matter. Clear illustrations, extensive literature references and a useful index make this work indispensible for both scientists and technicians involved in water treatment.
The Effects of Surface Chemistry and PH on the Aqueous Phase Adsorption of Aniline on Activated Carbon
Author: Kevin W. JayActivated Carbon Adsorption
Author: Roop Chand BansalPublisher: CRC Press
ISBN: 1420028812
Category : Science
Languages : en
Pages : 498
Book Description
High surface area, a microporous structure, and a high degree of surface reactivity make activated carbons versatile adsorbents, particularly effective in the adsorption of organic and inorganic pollutants from aqueous solutions. Activated Carbon Adsorption introduces the parameters and mechanisms involved in the activated carbon adsorption
Effect of Surface Chemistry and Porsity of Activated Carbons on the Adsorption of Water and Organic Pollutants
Author: Issa I. SalameEffects of Activated Carbon Surface Chemistry and Pore Structure on the Absorption of Methyl Tertiary-Butyl Ether and Trichloroethene from Natural Water
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Impact of Surface Chemistry on Adsorption: Tailoring of Activated Carbon
Author: Morgana T. BachPublisher:
ISBN:
Category :
Languages : en
Pages : 132
Book Description
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.