Download or read book Removing mercuric chloride from aqueous solution by complexation and activated carbon adsorption written by Raymond Henry Austin and published by . This book was released on 1975 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Removal of inorganic mercury II from aqueous solution by chelate complexation and activated carbon adsorption written by Victor William Wehman and published by . This book was released on 1973 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.

Download or read book Improving activated carbon removal of mercury II by carbon treatment and chelate complexation written by Jerald L. Schnoor and published by . This book was released on 1974 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mercury II Removal from Aqueous Solution by Activated Carbon written by Joel D. Williams and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adsorption of Methyl Mercuric Chloride on Activated Carbon written by Roger Dean Ammons and published by . This book was released on 1975 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Simultaneous Immobilization of Mercury and Polychlorinated Biphynyls from Water Or Sediment Using Polysulfide rubber coated Activated Carbon written by Eun Ah Kim and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research explores a new method of utilizing activated carbon as a multifunctional amendment to treat mercury and polychlorinated biphenyls (PCBs). The multifunctional material, named polysulfide-rubber polymer-coated activated carbon (PSR-AC), was developed by coating a reactive polymer for mercury on activated carbon. The material achieves multiple functions by facilitating two different reaction sites, the PSR polymer surface and the AC surface, for mercury and hydrophobic compounds respectively. This dissertation focuses on several lines of work that includes the development of polysulfide-rubber as a sorbent, the investigation of a favorable interaction between the PSR polymer and mercuric ions, and the study of hydrophobic interactions between AC and hydrophobic compounds. The results are intended to serve as a basis from which to estimate the chemical stabilities of the immobilized contaminants on the PSR-AC surface. This study was started from the simplest clean water system with only mercuric chloride, and was evolved to include natural organic matter and sediment particles. PSR-AC was prepared by synthesizing the polymer and solvent casting of the dissolved PSR polymer with AC. This process resulted in a polymer coating formed by the gradual invasion of the AC by the polysulfide-rubber polymer. High sulfur loading on activated carbon enhanced mercury adsorption, contributing to a three orders of magnitude reduction in mercury concentration. X-ray photoelectron spectroscopy and Fourier transform infra-red spectroscopy results revealed Hg-S bond formation between PSR-AC and mercuric ions. [mu]-X-ray absorption near edge spectroscopic analyses of the immobilized mercury on the PSR-AC surface suggests the chemical bond with mercury on the surface is a combination of Hg-Cl and Hg-S interactions. [mu]-X-ray fluorescence images of the PSR-AC cross-section elucidated that mercuric ions migrate 0~100 [mu]m inward from the exterior of the particle during three months of treatment in HgCl2 aqueous solution. The presence of a surface-mediated chemical reaction was supported by the [mu]-XANES analysis, showing a large fraction of the total mercuric ions within the PSR-AC particle was in the HgS form. Two mathematical models, based on either a Langmuir sorption isotherm or a kinetic sorption approach, were devised to predict the physicochemical processes involved in the intra-particle migration of mercury in a PSR-AC particle. The results indicate that the transport pathways partly include a non-equilibrium state between PSR and mercuric ions that allows a faster transport rate than when a pure equilibrium state was utilized. The PCB sorption efficiencies of PSR-ACs compared to those of ACs were examined to understand the effect of the polymer-coating on the hydrophobicity of the PSR-AC particle. Comparable PCB removals were observed with sulfur loading levels of less than 8 wt.%. The relative significances of the PSR surface and a hydrophobic surface in sorbing dissolved organic matter-bound mercury (Hg-DOM) removal were also tested using PSR-coated polyethylene (PE). The results suggested higher reaction efficiencies of the PSR polymer per unit area. A favorable interaction between PSR and mercuric ions also improved the overall Hg-DOM removal efficiencies by PSR-AC. The AC and PSR-AC achieved effective mercury removal also from sediment porewater with and without the sediment particles in contact with the sorbents. One month of sediment contact with AC and PSR-AC in quiescent conditions decreased the sediment methylmercury concentrations by 76% and> 91%, respectively. These results prompt further research activities regarding the short- and long-term effects of PSR-AC sediment treatments on mercury bioavailability.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalysis and Electrocatalysis at Nanoparticle Surfaces written by Andrzej Wieckowski and published by CRC Press. This book was released on 2003-02-19 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrating developments in electrochemical nanotechnology, heterogeneous catalysis, surface science and theoretical modelling, this reference describes the manipulation, characterization, control, and application of nanoparticles for enhanced catalytic activity and selectivity. It also offers experimental and synthetic strategies in nanoscale surface science. This standard-setting work clariefies several practical methods used to control the size, shape, crystal structure, and composition of nanoparticles; simulate metal-support interactions; predict nanoparticle behavior; enhance catalytic rates in gas phases; and examine catalytic functions on wet and dry surfaces.

Download or read book Preparation of Activated Carbon from Waste Oil Sands Coke by Microwave and Conventional Chemical Activation for Removal of Mercury ii from Aqueous Solution written by 施東甫 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Industrial Microbiology written by K Sukesh and published by S. Chand Publishing. This book was released on 2010 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the Graduate and Post Graduate students of different universities in Microbiology and Biotechnology. This book is immensly helpful to under Graduate and Post Graduate students of Microbiology, Biotechnology and Allied Sciences. The chapters are well conversed with Industrial Aspects in the production of Microbiology Inoculments in the field of Agriculture

Download or read book Preconcentration Techniques For Trace Elements written by Zeev Alfassi and published by CRC Press. This book was released on 1991-12-07 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate determination of trace elements is critical in various fields of science and technology. Direct measurement of trace elements in samples with complex matrices is often impractical, either due to analytical sensitivity limitations or matrix interferences. Preconcentration procedures are generally needed to eliminate matrix interferences and/or enrich minute amounts of analytes to a level for reliable measurements. Preconcentration Techniques for Trace Elements provides up-to-date information on various preconcentration techniques and detailed discussions regarding such topics as the dissolution of matrices, coprecipitation, solvent extraction, electrochemical means, ion exchange, sorption, chromatographic methods, flotation, membranes, volatization, polymer foam sorbents, fire assay, isotachophoresis, and filter papers. This comprehensive volume, featuring contributions from 21 experts from nine countries, will provide valuable reference material for all scientists and technicians dealing with trace analysis of real-world samples.

Download or read book Global and Regional Mercury Cycles Sources Fluxes and Mass Balances written by W. Baeyens and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential themes in the biochemical cycling of mercury are the relative importance of anthropogenic versus natural sources, transformation and migration processes at the local, regional and global scale, global emission inventories of different mercury sources (both point and diffuse) of both natural and anthropogenic origin. In this regard, Siberia, with its vast territory and variety of natural zones, is of special interest in the global mercury cycle and in terms of the influence of geographical zones on source and sink terms in regional budgets. Siberia contains large areas of mercuriferous belts; natural deposits that emit mercury into the atmosphere and water. Siberian gold has been mined with the use of mercury since the early 1800s. But there, too, huge forest zones and vast areas of tundra and wetland (bogs) can act as efficient sinks for atmospheric mercury. Audience: Environmental scientists, legislators, politicians and the interested citizen wishing to gain a clear picture of the biogeochemical cycling of mercury.

Download or read book Adsorption Technology in Water Treatment written by Eckhard Worch and published by Walter de Gruyter. This book was released on 2012-08-31 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Activated Carbon Adsorption for the Removal of Mercury from Flue Gas Emissions written by Radisav D. Vidic and published by . This book was released on 1996 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: