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Author : Jennifer Lee Henke
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.:/5 (389 download)
Download or read book Granular activated carbon adsorption of high explosives at Pantex written by Jennifer Lee Henke and published by . This book was released on 1997 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (16 download)
Download or read book Performance Evaluation of Granular Activated Carbon System at Pantex written by and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: A granular activated carbon (GAC) system is now in operation at Pantex to treat groundwater from the perched aquifer that is contaminated with high explosives. The main chemicals of concern are RDX and HMX. The system consists of two GAC columns in series. Each column is charged with 10,000 pounds of Northwestern LB-830 GAC. At the design flow rate of 325 gpm, the hydraulic loading is 6.47 gpm/ft2, and the empty bed contact time is 8.2 minutes per column. Currently, the system is operating at less than 10% of its design flow rate, although flow rate increases are expected in the relatively near future. This study had several objectives: Estimate the service life of the GAC now in use at Pantex; Screen several GACs to provide a recommendation on the best GAC for use at Pantex when the current GAC is exhausted and is replaced; Determine the extent to which natural organic matter in the Pantex groundwater fouls GAC adsorption sites, thereby decreasing the adsorption capacity for high explosives; and Determine if computer simulation models could match the experimental results, thereby providing another tool to follow system performance.
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Download or read book Biodegradation of High Explosives on Granular Activated Carbon[GAC]: Enhanced Desorption of High Explosives from GAC -- Batch Studies written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption to GAC is an effective method for removing high explosives (HE) compounds from water, but no permanent treatment is achieved. Bioregeneration, which treats adsorbed contaminants by desorption and biodegradation, is being developed as a method for reducing GAC usage rates and permanently degrading RDX and HMX. Because desorption is often the limiting mass transfer mechanism in bioregeneration systems, several methods for increasing the rate and extent of desorption of RDX and HMX are being studied. These include use of cosolvents (methanol and ethanol), surfactants (both anionic and nonionic), and[beta]- and[gamma]-cyclodextrins. Batch experiments to characterize the desorption of these HEs from GAC have been completed using Northwestern LB-830, the GAC being used at Pantex. Over a total of 11 days of desorption, about 3% of the adsorbed RDX was desorbed from the GAC using buffered water as the desorption fluid. In comparison, about 96% of the RDX was extracted from the GAC by acetonitrile over the same desorption period. Ethanol and methanol were both effective in desorbing RDX and HMX; higher alcohol concentrations were able to desorb more HE from the GAC. Surfactants varied widely in their abilities to enhance desorption of HEs. The most effective surfactant that was studied was sodium dodecyl sulfate (SDS), which desorbed 56.4% of the adsorbed RDX at a concentration of 500 mg SDS/L. The cyclodextrins that were used were marginally more effective than water. Continuous-flow column tests are underway for further testing the most promising of these methods. These results will be compared to column experiments that have been completed under baseline conditions (using buffered water as the desorption fluid). Results of this research will support modeling and design of further desorption and bioregeneration experiments.
Author : Matthew Christopher Morley
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (497 download)
Download or read book Enhanced desorption written by Matthew Christopher Morley and published by . This book was released on 2000 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roop Chand Bansal
Publisher : CRC Press
ISBN 13 : 1420028812
Total Pages : 498 pages
Book Rating : 4.4/5 (2 download)
Download or read book Activated Carbon Adsorption written by Roop Chand Bansal and published by CRC Press. This book was released on 2005-05-24 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : R. S. Joyce
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Feasibility of Granular, Activated-carbon Adsorption for Waste-water Renovation written by R. S. Joyce and published by . This book was released on 1964 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jerry. R. Perrich
Publisher : CRC Press
ISBN 13 : 1351086367
Total Pages : 268 pages
Book Rating : 4.3/5 (51 download)
Download or read book Activated Carbon Adsorption For Wastewater Treatment written by Jerry. R. Perrich and published by CRC Press. This book was released on 2018-01-18 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a guide to the state of the art of activated carbon adsorption technology as applied to wastewater treatment. This book surveys this body of knowledge and is a detailed description of current technology.
Author : Bruce C. Alleman
Publisher :
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bioremediation of Nitroaromatic and Haloaromatic Compounds written by Bruce C. Alleman and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sites contaminated with explosive compounds, pesticides, herbicides, PCBs, and other aromatic compounds present formidable technical, regulatory, and financial challenges. The application of bioremediation technologies to such sites offers the promise of cost-effective site remediation that can serve as a key component of a well-formulated strategy for achieving site closure. This volume presents the results of bench-, pilot-, and field-scale projects focused on the use of biological approaches to remediating problem compounds, such as RDX, HMX, TNT, DDT, 2, 4-D, nitro- and chlorobenzenes, nitroaniline, chloroaniline, hexachlorobenzene, PCPs, PCBs, and dichlorophenol in soils and groundwater.
Author : U. S. Environmental Protection Agency
Publisher : BiblioGov
ISBN 13 : 9781289193010
Total Pages : 46 pages
Book Rating : 4.1/5 (93 download)
Download or read book Operational Aspects of Granular Activated Carbon Adsorption Treatment written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Author : Douglas A. Hemphill
Publisher :
ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.:/5 (472 download)
Download or read book Characterization of the Carbon Adsorption Process Used for Treatment of High Explosive Waste Streams at the Los Alamos National Laboratory High Explosives Wastewater Treatment Facility written by Douglas A. Hemphill and published by . This book was released on 2001 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas P. Cheremisinoff
Publisher : Prentice Hall
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.3/5 (91 download)
Download or read book Carbon Adsorption for Pollution Control written by Nicholas P. Cheremisinoff and published by Prentice Hall. This book was released on 1993 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with the treatment of liquids, gas phase adsorption, air pollution control, treatment of hazardous wastes, carbon regeneration, controls, and safety.
Author : Paul N. Cheremisinoff
Publisher : Butterworth-Heinemann
ISBN 13 :
Total Pages : 1070 pages
Book Rating : 4.3/5 (91 download)
Download or read book Carbon Adsorption Handbook written by Paul N. Cheremisinoff and published by Butterworth-Heinemann. This book was released on 1978 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael David McVey
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (227 download)
Download or read book Use of Granular Activated Carbon for Treatment of Explosives-contaminated Ground Water written by Michael David McVey and published by . This book was released on 1990 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jerry R. Perrich
Publisher : Springer
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.F/5 ( download)
Download or read book ACTIVATED CARBON ADSORPTION FOR WASTEWATER TREATMENT written by Jerry R. Perrich and published by Springer. This book was released on 1981-06-10 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater characteristics and treatment. Activated carbon. Activated carbon adsorption. Development of design parameters. Contacting systems. Regeneration systems. Total process design and economics. Component equipament design. A guideline to operational procedures and design for granular carbon systems wastewater applications. Safety aspecs of activated carbon technology.
Download or read book Chemical and Biological Systems for Regenerating Activated Carbon Contaminated with High Explosives written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Noble Pierce
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (39 download)
Download or read book Granular Activated Carbon Adsorption Following Direct Filtration written by Christopher Noble Pierce and published by . This book was released on 1989 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ferhan Cecen
Publisher : Wiley-VCH
ISBN 13 : 9783527639441
Total Pages : 406 pages
Book Rating : 4.6/5 (394 download)
Download or read book Activated Carbon for Water and Wastewater Treatment written by Ferhan Cecen and published by Wiley-VCH. This book was released on 2011-09-26 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
