Accumulation of mercury in petroleum, coal, and their conversion products

Shpirt, M. Ya.; Пунанова, С. А.

doi:10.3103/s0361521911050119

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Одна ко, учитывая то, что помимо таких распространенных ма тричных компонентов, как оксиды кремния, железа, алю миния, щелочных и щелочноземельных металлов, в золе, полученной при сжигании углей, содержатся РиРЗЭ, ис пользование данного материала только в строительстве без извлечения ценных компонентов является в некото рой степени расточительством. Кроме того, в ЗШМ име ются как промышленно ценные, так и экологически опас ные элементы [5,6,7,8,9,10,11]. ЗШМ можно рассматри вать как сырье (фактически месторождения руды), нахо дящееся на поверхности.…”

Section: основная частьunclassified

Some Physical and Chemical Characteristics of Waste Products of the Berezovskaya Central Concentrating Mill

Cherkasova¹,

Pilin²,

Barancev³

et al. 2023

Ugol'

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Section: основная частьunclassified

Some Physical and Chemical Characteristics of Waste Products of the Berezovskaya Central Concentrating Mill

Cherkasova¹,

Pilin²,

Barancev³

et al. 2023

Ugol'

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“…It is prone to accumulation in biota and represents a serious problem when released to the environment, being recognized as a large scale global pollutant [19,20]. Undoubtedly, the natural occurrence of Hg in crude oil and its presence in fuels [21,22] contribute significantly to the input of this pollutant to the environment. Some spectrometric techniques, such as cold vapor atomic absorption spectrometry (CV-AAS) [23], electrothermal atomic absorption spectrometry (ETAAS) [24], atomic fluorescence spectrometry (AFS) [25], inductively coupled plasma mass spectrometry (ICP-MS) [26] and electrothermal vaporization coupled to ICP-MS (ETV-ICP-MS) [27] were already employed for total Hg determination in oil samples.…”

Section: Introductionmentioning

confidence: 99%

Development of a method for total Hg determination in oil samples by cold vapor atomic absorption spectrometry after its extraction induced by emulsion breaking

Vicentino

Brum

Cassella

2015

Talanta

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This work reports the development of a novel extraction method for total Hg determination in oil samples. After extracting Hg from samples it was quantified in the extracts by cold vapor atomic absorption spectrometry (CV-AAS), employing a laboratory-made gas-liquid separator (GLS) and NaBH4 as reducing agent. The extraction of Hg from samples was carried out by extraction induced by emulsion breaking (EIEB), which is based on the formation and breaking of water-in-oil emulsion between the oil samples and an extractant solution containing an emulsifying agent (surfactant) and nitric acid. Operational parameters of the GLS were evaluated in order to set the best performance of the measurement system. In these studies it was proven that the volume of sample and the concentration of HCl added to the sample extracts had significant influence on Hg response. The best conditions were achieved by adding 0.5 mL of a 0.3 mol L(-1) HCl solution on 1 mL of sample extract. The extraction conditions were also optimized. The highest efficiency was observed when 4 mL of a solution containing 2.5% triton X-100 and 15% v/v HNO3 were employed for the extraction of Hg contained in 20 mL of sample. Emulsion breaking was performed by heating at 80 °C and took approximately 20 min. The limit of quantification of the method was 1.9 µg L(-1) and recovery percentages between 80% and 103% were observed when spiked samples (2 and 10 µg L(-1)) of diesel oil, biodiesel and mineral oil were analyzed.

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“…7 To date, there is little information in the literature concerning the source and absorption mechanisms of Hg in crude oil. 8 Atmospheric Hg deposition prior to petroleum formation has been suggested and contributes to Hg in crude oil deposits globally. It has further been argued that enhanced crude oil Hg concentrations are a result of secondary geological processes, such as interactions with metalliferous fluids and formation waters that mobilize Hg from the source rock, where it is present predominantly as cinnabar (α-HgS(s)), and transfer it to the reservoir.…”

Section: ■ Introductionmentioning

confidence: 99%

“…To date, there is little information in the literature concerning the source and absorption mechanisms of Hg in crude oil . Atmospheric Hg deposition prior to petroleum formation has been suggested and contributes to Hg in crude oil deposits globally.…”

Section: Introductionmentioning

confidence: 99%

Rapid Dissolution of Cinnabar in Crude Oils at Reservoir Temperatures Facilitated by Reduced Sulfur Ligands

Lambertsson

Lord

Frech

et al. 2018

ACS Earth Space Chem.

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Mercury (Hg) is present in petrochemical samples, including crude oils, and the processing and use of petroleum products contribute to global Hg emissions. We present a refined theory on geochemical processes controlling Hg concentrations in crude oil by studying dissolution kinetics and solubility thermodynamics of cinnabar (α-HgS(s)) in different crude oils held at reservoir temperatures. In a black light crude oil, α-HgS(s) dissolved in an apparent zero-order reaction with a rate of 0.14–0.58 μmoles m–2 s–1 at 170–230 °C and an estimated activation energy of 43 kJ mol–1. For crude oil samples with a total sulfur concentration spanning 0.15–2.38% (w/w), the measured dissolution rate varied between 0.05 and 0.24 μmoles m–2 s–1 at 200 °C. Separate tests showed that thiols and, to a lesser extent, organic sulfides increased the solubility of α-HgS(s) in isooctane at room temperature compared to thiophenes, disulfides, and elemental sulfur. Long-term (14 days) α-HgS(s) solubility tests in a crude oil at 200 °C generated dissolved Hg concentrations in the 0.3% (w/w) range. The high α-HgS(s) dissolving capacity of the crude oils was more than 2 orders of magnitude greater than the highest reported Hg concentration in crude oils globally. On the basis of the kinetic and solubility data, it was further concluded that α-HgS(s) is not stable under typical petroleum reservoir conditions and would decompose to elemental mercury (Hg0). Our results suggest that source/reservoir temperature, abundance of reduced sulfur compounds in the crude oil, and dissolved Hg0 evasion processes are principal factors controlling the ultimate Hg concentration in a specific crude oil deposit.

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Accumulation of mercury in petroleum, coal, and their conversion products

Cited by 7 publications

References 7 publications

Some Physical and Chemical Characteristics of Waste Products of the Berezovskaya Central Concentrating Mill

Some Physical and Chemical Characteristics of Waste Products of the Berezovskaya Central Concentrating Mill

Development of a method for total Hg determination in oil samples by cold vapor atomic absorption spectrometry after its extraction induced by emulsion breaking

Rapid Dissolution of Cinnabar in Crude Oils at Reservoir Temperatures Facilitated by Reduced Sulfur Ligands

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