3 edition of Mercury speciation and sorption processes in mining environments found in the catalog.
Mercury speciation and sorption processes in mining environments
Christopher Sang-Jae Kim
by Department of Geological and Environmental Studies, Stanford University in Palo Alto, CA
Written in English
|Statement||Christopher Sang-Jae Kim|
|The Physical Object|
|Pagination||xv, 214 l.|
|Number of Pages||214|
Mercury (Hg) released by mining activities can be dispersed in the environment, where it is subject to species transformations. Hg isotope ratios have been used to track sources in Hg contaminated areas, although it is unclear to what extent variations in δ-values are attributed to distinct Hg was mined as Hg sulphide (cinnabar) in Idrija, Slovenia for centuries. Kinetics and mechanisms of geochemical processes: It's about interfaces and scale. th ACS National Meeting, Denver, CO, March Sparks, D.L. Application of Near-Edge X-ray Absorption Fine Structure (NEXAFS) Spectroscopy and Scanning Transmission X-ray Microscopy (STXM) to Investigate Carbon Cycling in the Terrestrial Environment.
Depending on the physical, chemical and biogeochemical processes and condition of the environment, various arsenic species can be present in water. Water soluble arsenic species existing in natural water are inorganic arsenic (iAs) and organic arsenic (oAs) species. All acidic species, according to the chemical equilibrium, have well-recognized molecular and ionic forms in water. the sorption of mercury on mineral particles. To measure atmospheric emissions of mercury, micrometeorological and flux chamber methods will be used. The result of the study will allow researchers to better understand the process involved in speciation and distribution of mercury in mining waste.
Applications - arsenic speciation and mobility in contaminated soils, modeling activity of CD, Zn, and Cu in contaminated soils, and in situ chemical immobilization. A timely addition to the literature, this book highlights the desorption/release mechanisms for the purpose of resolving remediation dilemmas in contaminated environments. ing humans and other biota. While mercury contamination in natural environments results mostly from atmospheric processes (Mason et al. ; Mason et al. ; Fitzgerald and Lamborg ; Lindberg and Stratton ), mining and industrial processes can lead to severe local pollution. On the Oak Ridge Reservation (ORR), for example, mer -.
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Soluble mercury chlorides, oxides, and sulfates were also identified in several samples and may represent more significant contributors of mercury to the environment.
Mercury speciation in mine wastes was found to correlate closely with factors such as the initial conditions of mercury ore deposition, the roasting and weathering processes to which the samples were subjected, and Author: C.
Kim, G. Lowry, S. Shaw, J. Rytuba, G. Brown. Mercury speciation and sorption processes in mining environments. None Kim CS-J: Kim CS-J. Mercury speciation and sorption processes in mining environments. Ph.D. Dissertation. Department of Geological and Environmental Sciences, Stanford University, Stanford, CA, September R (Final) not available: Dissertation/Thesis.
Kim CS, Lowry GV, Shaw S, Rytuba JJ, et al. Mercury speciation and sorption processes in mining environments: Origins, influences, and implications. Poster presented at the American Geophysical Union Fall Meeting, San Francisco, CA, December. Therefore, qualitative and quantitative information on the speciation of Tl and on key sorption processes is essential to assess risks arising from Tl contaminated soils.
In the common pH-Eh range of soils, Tl mainly occurs as relatively well-soluble monovalent Tl(I), and to a lesser extent as highly insoluble trivalent Tl(III) (Nriagu, Author: Silvan Wick, Silvan Wick, Bart Baeyens, Maria Marques Fernandes, Jörg Göttlicher, Marlene Fischer, N.
The application of Hg isotope signatures as tracers for environmental Hg cycling requires the determination of isotope fractionation factors and mechanisms for individual processes. Here, we investigated Hg isotope fractionation of Hg(II) sorption to goethite in batch systems under different experimental conditions.
We observed a mass-dependent enrichment of light Hg isotopes on the Cited by: Martin Jiskra, Jan G. Wiederhold, Bernard Bourdon, Ruben Kretzschmar, Solution Speciation Controls Mercury Isotope Fractionation of Hg(II) Sorption to Goethite, Environmental Science & Technology, /es, 46, 12, (), ().
Anthropogenic mercury pollution has been brought about by the chloralkali process, cement production, mining and smelting, artisanal small-scale gold mining, coal burning, and oil refining, which together emit huge quantities of Hg to the environment (Science Communication Unit, ), on the order of 2 Gg per year.
An important process controlling arsenic speciation is sorption, in which arsenic forms or loses chemical bonds with functional groups on a mineral surface.
In many soil environments. damage to the environment (i.e. soil erosion, mobilization of heavy metals, etc.).1, 2 One of the most popular gold mining techniques employed by artisinal miners in Guyana is mercury amalgamation. During the amalgamation process approximately metric tons/yr 11, 12 of mercury is used.
Mercury once in the environment can be transported. All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page.
Environments is an international peer-reviewed open access monthly journal published by MDPI. Christopher S. Kim (Ph. D., ; Assistant Professor, Department of Physical Sciences, Chapman University, present): "Mercury Speciation and Sorption Processes in Mining Environments" Alexis S.
Templeton (Ph. D., ; Postdoctoral Fellow, Scripps Institution of Oceanography, present): " Lead and Selenium distribution and.
Ph.D. Theses (). To obtain a thesis, or to search for one published in to the present, please visit the library. For more information about obtaining theses, please visit here. Cristopher S. Kim (Ph. D., ): " Mercury Speciation and Sorption Processes in Mining Environments".
Alexis S. Templeton (Ph. D., ): "Lead and Selenium distribution and speciation at biofilm. Mercury speciation, mercury isotope fractionation during ore roasting process and their implication to source identification of downstream sediment in Wanshan mercury mining area, SW China.
Khalid RA, Gambrell RP, Patrick Jr WH () Sorption and release of mercury by Mississippi River sediment as affected by pH and redox potential. In: Biological implications of metals in the environment, ERDA series Available from Hanford Life Sciences.
Advanced Oxidation Processes; Sorption; Soil Pollution; Natural Organic Matter; Black Carbon; Impact of mining on environment; Recycling of industrial wastes; Coal use related pollution Environmental Analytical Chemistry, Arctic Science, Trace Elements, Mercury, Speciation, Bioavailability, Arctic And Marine Oil Spills, Sea Ice, Climate.
Metallurgic calcines with very high mercury and methylmercury content from the Almadén mining district were analyzed by synchrotron-based microprobe techniques. Information about mercury speciation was obtained by μ-EXAFS (microscopic extended X-ray absorption fine structure) spectroscopy, whereas elemental associations were evaluated by μ-XRF (microscopic X-ray.
Evolution of the Speciation and Mobility of Pb, Zn and Cd in Relation to Transport Processes in a Mining Environment by Intissar Elmayel 1,*, José María Esbrí 2, García-Ordiales Efrén 3, Eva-María García-Noguero 2, Zouhair Elouear 1, Bouzid Jalel 1, Alessandro Farieri 4, Nieves Roqueñí 3, Pablo Cienfuegos 3 and Pablo Higueras 2.
Most mercury contamination in natural environments results from atmospheric processes, but mining and industrial processes can lead to severe local pollution. On the Oak Ridge Reservation in Tennessee, for example, mercury pollution in the East Fork Poplar Creek (EFPC) watershed is caused by historical mercury use at the Y National Security.
Book Description. Most reported incidents of soil contamination include an array of heavy metals species rather than a single ion. The various interactions in these multicomponent or multiple-ion systems significantly impact the fate and transport of heavy metals, and competition for sorption sites on soil matrix surfaces is a common phenomenon.
However, due to natural processes at the disposal site, dissolution and mobilization of toxic compounds may occur. In this case, the sorption phenomena in soils play a key role, which determines the transport of toxic compounds to receiving waters, and consequently their fate.
Skip to Main Content. Close. Journals; Books; GeoRef.Abstract. Mercury contamination of soils and vegetation close to an abandoned Hg-fulminate production plant was investigated.
Maximum concentrations of Hg (> g soil) were found in the soils located in the area where the wastewater produced during the washing procedures carried out at the production plant used to be discharged.
A few meters away from the discharge area, Hg concentrations. The Process: Mining Gold with Mercury. A representative mercury‐based ASGM technique is outlined in Figure The reader is referred to leading publications for further details of this process, as well as other techniques for extracting gold through amalgamation with mercury, such as panning and sluicing in alluvial operations, or direct addition of mercury into mining pits.6a,6b, 9,