Determination of elemental mercury in an emission source having a high sulfur dioxide concentration by amalgamation with gold and ultraviolet spectrophotometry

Baldeck, Charles M.; Kalb, G. William; Crist, Howard L.

doi:10.1021/ac60347a030

Cited by 21 publications

(10 citation statements)

References 17 publications

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“…[5][6][7][8][9] Nevertheless, in the case of coal gasification for power generation, Hg removal at high temperatures may lead to improvement in the thermal efficiency of IGCC system. Many researchers deeply investigated the possibility of using noble metals such as gold (Au), 10,11 silver (Ag), [12][13][14] palladium (Pd) 15,16 and platinum (Pt) 15 as efficient Hg removal sorbents. 17 These Hg removal sorbents, which show excellent performance for removal of Hg, are regenerable and are also stable for longtime operation.…”

Section: Introductionmentioning

confidence: 99%

First principle study of the interaction of elemental Hg with small neutral, anionic and cationic Pd n (n = 1‒6) clusters

Siddiqui

Bouarissa

2013

J Chem Sci

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Density functional theory (DFT)-based calculations have been performed so as to study the interaction of elemental mercury (Hg) with small neutral, cationic and anionic palladium clusters (Pd n , n = 1-6). Results of these calculations clearly indicate that frontier molecular orbital (FMO) theory is a useful method to predict the selectivity of Hg adsorption. Binding energies of Hg on cationic Pd n clusters are generally found to be greater than those on neutral and anionic clusters. Results of natural bond orbital (NBO) analysis show that the flow of electrons in the neutral and charged complexes is mainly due to s orbitals of Hg. NBO analysis also indicates that, in most of the cases, the binding energies of Hg with Pd n clusters are directly proportional to charge transfer, i.e., greater the charge transfer, higher is the binding energy.

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Section: Introductionmentioning

confidence: 99%

First principle study of the interaction of elemental Hg with small neutral, anionic and cationic Pd n (n = 1‒6) clusters

Siddiqui

Bouarissa

2013

J Chem Sci

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“…In particular, gold is preferred for Hg removal due to its efficiency. Moreover, gold is more immune to impurities such as organic substances or sulfur-containing species [61]. On the other hand, the efficiency of Hg removal is highly dependent on the temperature [62].…”

Section: The Toxicity Of Mercury and Its Removalmentioning

confidence: 99%

Graphene Oxide-Based Nanofiltration for Hg Removal from Wastewater: A Mini Review

Zunita

2021

Membranes

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Mercury (Hg) is one of heavy metals with the highest toxicity and negative impact on the biological functions of living organisms. Therefore, many studies are devoted to solving the problem of Hg separation from wastewater. Membrane-based separation techniques have become more preferable in wastewater treatment area due to their ease of operation, mild conditions and also more resistant to toxic pollutants. This technique is also flexible and has a wide range of possibilities to be integrated with other techniques. Graphene oxide (GO) and derivatives are materials which have a nanostructure can be used as a thin and flexible membrane sheet with high chemical stability and high mechanical strength. In addition, GO-based membrane was used as a barrier for Hg vapor due to its nano-channels and nanopores. The nano-channels of GO membranes were also used to provide ion mobility and molecule filtration properties. Nowadays, this technology especially nanofiltration for Hg removal is massively explored. The aim of the review paper is to investigate Hg removal using functionalized graphene oxide nanofiltration. The main focus is the effectiveness of the Hg separation process.

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“…In addition, it is not influenced by sulfur-containing species, such as SO 2 , H 2 S, and organic substances. 75 However, the capture efficiency of Hg depends on the temperature. 76 The adsorption of elemental mercury on small neutral, cationic and anionic gold clusters (Au n , n = 1-6) by using the DFT method has been studied.…”

Section: Heterogeneous Reactionmentioning

confidence: 99%

Application of computational chemistry in understanding the mechanisms of mercury removal technologies: a review

Ling

Fan

Wang

et al. 2015

Energy Environ. Sci.

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The control of mercury in flue gas is challenging, and many investigators 6 have focused on different mercury removal technologies. The application of 7 computational chemistry in understanding mercury removal mechanisms will help to 8 modify and design mercury removal materials, and thereby improve the efficiency of 9 removal of mercury in flue gas. Therefore, a review of theoretical studies on the 10 adsorption and oxidation of mercury has been undertaken in the current study. In this 11 contribution, the homogeneous oxidation mechanisms of Hg 0 , as well as 12 heterogeneous interaction including adsorption of mercury species and oxidation of 13 Hg 0 on activated carbon, metals, metal oxides and other materials have been 14 summarized. In addition, possible future directions of theoretical calculations on 15 understanding the removal of mercury are outlined.16

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Determination of elemental mercury in an emission source having a high sulfur dioxide concentration by amalgamation with gold and ultraviolet spectrophotometry

Cited by 21 publications

References 17 publications

First principle study of the interaction of elemental Hg with small neutral, anionic and cationic Pd n (n = 1‒6) clusters

First principle study of the interaction of elemental Hg with small neutral, anionic and cationic Pd n (n = 1‒6) clusters

Graphene Oxide-Based Nanofiltration for Hg Removal from Wastewater: A Mini Review

Application of computational chemistry in understanding the mechanisms of mercury removal technologies: a review

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