Regeneration of Granular Activated Carbon (GAC) Using Solvent-desorption of DBCP, EDB and TCP PDF Download

Author: Anissa Walton-Green
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 152

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Author: Michael David Sufnarski
Publisher:
ISBN:
Category :
Languages : en
Pages : 184

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Book Description

Author: Clark
Publisher: CRC Press
ISBN: 9780873711142
Category : Technology & Engineering
Languages : en
Pages : 358

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Book Description
This new book presents design, cost, and performance information on the application of GAC in drinking water, including the use of GAC both in the U.S. and overseas. Various design concepts for the unit operations that make up the GAC process are presented in 11 comprehensive, complete chapters, including a special chapter that provides cost equations and comparative cost studies for full scale application of GAC.

Author: Ferhan Cecen
Publisher: John Wiley & Sons
ISBN: 3527639454
Category : Science
Languages : en
Pages : 409

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Book Description
This monograph provides comprehensive coverage of technologies which integrate adsorption and biological processes in water and wastewater treatment. The authors provide both an introduction to the topic as well as a detailed discussion of theoretical and practical considerations. After a review of the basics involved in the chemistry, biology and technology of integrated adsorption and biological removal, they discuss the setup of pilot- and full-scale treatment facilities, covering powdered as well as granular activated carbon. They elucidate the factors that influence the successful operation of integrated systems. Their discussion on integrated systems expands from the effects of environmental to the removal of various pollutants, to regeneration of activated carbon, and to the analysis of such systems in mathematical terms. The authors conclude with a look at future needs for research and develoment. A truly valuable resource for environmental engineers, environmental and water chemists, as well as professionals working in water and wastewater treatment.

Author: University of Hawaii at Manoa. Library. Hawaiian Collection
Publisher:
ISBN:
Category : Hawaii
Languages : en
Pages : 144

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Book Description

Author: Rohiniben Patel
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 150

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Book Description
"Sequentially-loaded and regenerated granular activated carbon (GAC) was studied to determine the efficiency of regenerative materials to restore the adsorption capacity. GAC was loaded with the Bray pond water containing natural organic matter (NOM) using rapid small scale column test (RSSCT) column. The exhausted carbon was NOM was then regenerated with different regenerants, and regenerated carbon was again reloaded with Bray pond water. The regeneration process was done in situ. Eight regenerants were used for this purpose and they were compared based on their regeneration efficiency. The most effective regenerant observed was acetic acid"--Abstract, leaf iii.

Author: Michael J. McGuire
Publisher:
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 624

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Author: Sumita Thakur
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 292

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Book Description

Author: Jeff McEwen
Publisher:
ISBN:
Category : University of Ottawa theses
Languages : en
Pages : 324

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Book Description

Author: Carla De Las Casas
Publisher:
ISBN:
Category :
Languages : en
Pages : 430

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Book Description
Fenton-dependent recovery of carbon initially saturated with one of several chlorinated aliphatic contaminants was studied in batch and continuous-flow reactors. A specialty carbon, URV-MOD 1 (Calgon) was employed to minimize non-productive H2O2 demand - that which does not yield hydroxyl or superoxide radicals. Enhancement of PCE degradation kinetics by ferric iron addition is limited by iron solubility, even at relatively low pH. Quinone addition increased the pseudo-first-order rate constant for PCE loss temporarily. Only copper addition sustainably enhanced the specific rate of PCE loss. For copper-to-iron molar ratios of 0.25 to 5, the pseudo-first-order rate constant for PCE transformation was increased by a factor of 3.5. It is apparent that the effect of copper addition on Fenton-dependent reaction rates is complex, and involves a shift in chemical mechanism, as indicated by the differing slopes in the Arrhenius plot (with and without copper).A mathematical model was developed to evaluate the effect of operational parameters ([Fe(III)]T:[H2O2]o ratio and pH) on degradation kinetics and optimize the PCE degradation process in homogeneous reaction mixtures. The model simulated experimental degradation of the organic target in a homogeneous Fenton-reaction system. The model requires further refinement to simulate Fenton's systems in which ions in solution (such as sulfate and chloride) play significant roles. In continuous-flow reactors, Fenton's reagents were cycled through spent GAC in columns to degrade one of seven chlorinated compounds tested. The contaminant with the weakest adsorption characteristics, methylene chloride, was 99% lost from the carbon surface during a 14-hour regeneration period. At the field site, the GAC was saturated with gases containing TCE and PCE from a soil vapor extraction (SVE) system. In the field, up to 95% of the sorbed TCE was removed from GAC during regeneration periods of 50-60 hours. Recovery of PCE-loaded GAC was significantly slower. Column experiments show that there is minimal loss of carbon adsorption capacity during Fenton treatment and that the rate of GAC regeneration is compound specific. Scoping-level cost estimates indicated that field use of Fenton regeneration is not cost effective without optimization and/or iron surface amendments, except in the case of the most soluble VOCs.