Solubility of metallic mercury in octane, dodecane and toluene at temperatures between 100°C and 200°C

Miedaner, M. M.; Migdisov, Artas; Williams‐Jones, Anthony E.

doi:10.1016/j.gca.2005.06.029

Cited by 19 publications

(15 citation statements)

References 17 publications

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“…Several process facilities, such as stripping columns, heat exchangers, reactors, and distillation units operate at high temperatures; therefore, predicting mercury solubility in alkanes at high temperature is crucial. The solubility of elemental mercury in some organic solvents, including octane, dodecane, and toluene, has been experimentally and theoretically estimated over a temperature range from 100 • C to 200 • C and up to 6 bar [50]. Figure 4(b) represents the predicted solubility of elemental mercury in normal octane at 6 bar and high temperatures.…”

Section: Solubility Of Mercury In Normal Alkanesmentioning

confidence: 99%

A group contribution method for predicting the solubility of mercury

Khalifa

Lue

2017

Fluid Phase Equilibria

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Mercury is a toxic and corrosive element, and understanding its partitioning within ecosystems and industrial processes is of vital importance. The solubility of mercury in normal alkanes, aromatics, water and alcohols is predicted using widely used Soave-Redlich-Kwong equation of state in combination with a group contribution method to estimate binary interaction parameters. The interaction parameters between elemental mercury and seven other molecular groups were determined in this work by fitting available solubility data for mercury. The solubility in the studied solvents was accurately described. This work allows the prediction of the thermodynamic behavior of elemental mercury in a wide variety of solvents, solvent mixtures, and operating conditions where experimental data are unavailabl

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Section: Solubility Of Mercury In Normal Alkanesmentioning

confidence: 99%

A group contribution method for predicting the solubility of mercury

Khalifa

Lue

2017

Fluid Phase Equilibria

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“…Peabody & Einaudi (1992) studied the PAH-enriched kerogen from the Culver-Baer mine in the Geysers geothermal system, revealed that its carbon isotopic composition d 13 C is -27.22‰, and concluded it was derived from the surrounding sedimentary rocks. Miedaner et al (2005) examined the solubilities of native mercury in organic solvents, toluene (C 6 H 5 CH 3 , App. IV), octane (C 8 H 18 , App.…”

Section: Pah Minerals In Mercury Mines In a Subduction-zone Settingmentioning

confidence: 99%

Crystal Chemistry and Genesis of Organic Minerals: A Review of Oxalate and Polycyclic Aromatic Hydrocarbon Minerals

Echigo

Kimata

2010

The Canadian Mineralogist

145

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Organic minerals are natural organic compounds with both a well-defined chemical composition and crystallographic properties; their occurrences reveal traces of the high concentration of certain organic compounds in natural environments. Thus the origin and process of formation of organic minerals will lead us to understand the fate and behavior of the organic molecules in the lithosphere. With the aim of their contribution to new developments in mineralogy, we subdivide organic minerals into two groups: (1) ionic organic minerals, in which organic anions and various cations are held together by ionic bonds, and (2) molecular organic minerals, in which electroneutral organic molecules are bonded by weak intermolecular interactions. This review is composed of four sections. The first section is concerned with the definition of both organic minerals and the above two groups. The second deals with crystal chemistry and geochemistry of oxalate minerals, which are the most typical ionic organic minerals. In this section, the role of (H 2 O) 0 is first discussed, as most oxalate minerals incorporate (H 2 O) 0 into their crystal structures. Then the phase relationships among hydrous and anhydrous calcium oxalate minerals, namely their structural hierarchy, are described, owing to the fact that they are the most abundant ionic organic minerals. In addition, the weak Jahn-Teller effect of the Fe 2+ ion is exemplified in humboldtine [Fe 2+ (C 2 O 4 )•2H 2 O]. The Fe 2+ ion causes distortions of octahedra in this organic mineral, though the effect has hardly been observed in inorganic minerals. In the third section, we describe the crystal chemistry and process of formation of polycyclic aromatic hydrocarbon (PAH) minerals, which are the most typical molecular organic minerals. Those of karpatite (C 24 H 12 ) and idrialite (C 22 H 14 ) are particularly considered in detail. In the fourth section, we summarize the characteristics of organic minerals and discuss their contribution to Earth and planetary sciences.Les minéraux organiques sont des composés organiques naturels ayant à la fois une composition chimique et des propriétés cristallographiques bien définies. Leurs présence témoigne de la concentration élevée de certains composés organiques dans les milieux naturels. Donc, l'origine et les processus de formation des minéraux organiques nous permettront de comprendre le sort et le comportement de molécules organiques dans la lithosphère. Dans le but de contribuer à l'essor de nouveaux développements en minéralogie, nous divisons les minéraux organiques en deux groupes: (1) minéraux organiques ioniques, dans lesquels les anions organiques et divers cations sont liés par des liaisons ioniques, et (2) minéraux organiques moléculaires, dans lesquels §

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“…Organic matter may be found in epithermal‐type mercury deposits (e.g., Peabody & Einaudi, ; Sherlock, ; Echigo & Kimata, ). Previous studies demonstrated that organic matter can have significant influences on the redox state of ore‐forming fluids and the chemical speciation and solubility of Hg in hydrothermal environments (Varekamp & Buseck, ; Krupp, ; Miedaner et al ., ). This paper reports for the first time the occurrences and characteristics of solid organic matters in the mercury ore from Itomuka mine and discusses their influences on the transportation and deposition of Hg.…”

Section: Introductionmentioning

confidence: 97%

Organic matters and acid‐sulfate alteration in Itomuka mercury mine, Hokkaido, Japan: Implications for the transportation and deposition mechanisms of Hg

2019

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In order to examine the transportation and deposition mechanisms of Hg, we investigated the ore and hydrothermal alteration minerals and solid organic matters from Itomuka mercury mine located in the eastern part of central Hokkaido. In addition to the ore minerals, native mercury and cinnabar, quartz, marcasite, alunite, kaolinite, and minor amounts of pyrite and smectite were identified in the Hg ore by powder X‐ray diffraction (XRD) analysis. This mineral assemblage of acid sulfate alteration was likely developed under the conditions of low temperature (≤100°C) and low pH (≤2) in the steam‐heated environment. The H2SO4 was produced above the water table by the oxidation of H2S separated from deep, near‐neutral fluids by boiling. The dominance of native mercury over cinnabar in Hg ore indicates that the greater part of mineralized Hg was transported as Hg0 in aqueous solution and vapor with low sulfur fugacity. The solid organic matters found in the Hg ore were analyzed with SEM‐EDS, micro‐XRD, and micro‐Fourier transform infrared (FTIR) spectroscopy, and these results suggest that the organic matters contributed to keeping the low fO2 of the Hg‐bearing fluid and transportation of Hg as Hg0 in S‐poor condition. Because the solubility of Hg in acidic fluid is low, neutral to alkaline fluid seems to have leached Hg from the basement sedimentary rocks of Hidaka Group which also supplied the organic matters to the fluid. The oxidation and cooling of Hg‐bearing solution and vapor triggered the deposition of liquid Hg as a primary phase.

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Solubility of metallic mercury in octane, dodecane and toluene at temperatures between 100°C and 200°C

Cited by 19 publications

References 17 publications

A group contribution method for predicting the solubility of mercury

A group contribution method for predicting the solubility of mercury

Crystal Chemistry and Genesis of Organic Minerals: A Review of Oxalate and Polycyclic Aromatic Hydrocarbon Minerals

Organic matters and acid‐sulfate alteration in Itomuka mercury mine, Hokkaido, Japan: Implications for the transportation and deposition mechanisms of Hg

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