Ferrous Carbonate Nucleation and Inhibition

Yean, Sujin; Alsaiari, Hamad Amer; Kan, Amy T.; Tomson, Mason B.

doi:10.2118/114124-ms

Cited by 22 publications

(8 citation statements)

References 14 publications

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“…Based on these results, it can be concluded that citrate is not only adsorbed on the surface of siderite with the (Fe 2+ citrate) − form but also incorporated into the siderite structure during siderite formation. The adsorption or incorporation of (Fe 2+ citrate) − can hinder the growth of siderite crystals, which may be due to surface poisoning or/and structural distortion [ 37 ]. When the citrate concentration is increased, these effects become stronger, causing the formation of smaller siderite crystals, which are covered by many (Fe 2+ citrate) − complexes.…”

Section: Resultsmentioning

confidence: 99%

“…Citric acid (HOC(COOH)(CH 2 COOH) 2 ) is a common organic ligand in natural water and is also considered as a model compound for humic substances, having three carboxylic groups and one hydroxyl group [ 36 ]. While citrate inhibits the crystallization of carbonate minerals owing to the adsorption of citrate on the mineral surface [ 37 , 38 ], it is known to be incorporated into the structure of carbonates [ 38 , 39 ]. It is also known that this surface modification by organic functional groups (such as carboxylic ligands) can improve the reactivity of minerals [ 40 ] and thus be employed for developing a novel As(III) detector with high sensitivity [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Arsenic (III and V) Removal in Anoxic Environments by Hierarchically Structured Citrate/FeCO3 Nanocomposites

et al. 2020

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Novel citrate/FeCO3 nanocomposites (CF-NCs) were synthesized for effective arsenic (III and V) sorption with constant addition of Fe2+ into HCO3− solution in the presence of citrate. This paper is the first report on the formation of CF-NCs, and in this study we investigate the mechanisms of arsenic uptake by the sorbent under anoxic conditions through various solid- and liquid-phase spectroscopic methods, including X-ray absorption spectroscopy. In CF-NCs, citrate was found to be incorporated into the structure of siderite (up to 17.94%) through (Fe2+citrate)− complexes. The crystal morphology of rhombohedral siderite was changed into hierarchically nanostructured spherical aggregates composed of several sheet-like crystals, which improved the surface reactivity in the presence of sufficient citrate. Compared to pure siderite (15.2%), enhanced removal of As(III) in the range of 19.3% to 88.2% was observed, depending on the amount of incorporated citrate. The maximum sorption capacities of CF-NCs for As(III) and As(V) were 188.97 and 290.22 mg/g, respectively, which are much higher than those of previously reported siderite-based adsorbents. It was found that arsenic (III and V) sorption on CF-NCs occurred via bidentate corner-sharing surface complexation, predominantly without changes in the arsenic oxidation states. These results suggest that arsenic (III and V) can be attenuated by siderite in anoxic environments, and this attenuation can be even more effective when siderite is modified by incorporation of organic compounds such as citrate.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Arsenic (III and V) Removal in Anoxic Environments by Hierarchically Structured Citrate/FeCO3 Nanocomposites

et al. 2020

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“…The reactive diffusion coefficient can be calculated through experimental data, such as provided by (Wang et al 2014) and (Yean et al 2008).…”

Section: Stage-4 Diffusion: Reactive Diffusion At Pipe Surfacementioning

confidence: 99%

“…15 Comparison between iron + carbonate ions and iron + sulfide ions kinetic reaction. Iron + carbonate ions kinetic reaction data are adopted from Yean et al (2008) and iron + sulfide ions from Wang et al (2014)…”

Section: St Distance (Ft)mentioning

confidence: 99%

Integrated CO2-H2S corrosion-erosion modeling in gas production tubing and pipeline by considering passive layer activity

Rahmawati

Santoso

Tanjungsari

2021

J Petrol Explor Prod Technol

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Corrosion and erosion are the common pipe-integrity issues that occur when carbon dioxide, hydrogen sulfide and sand exist in the gas stream at the same time. Corrosion is developed by the reaction among carbon dioxide, hydrogen sulfide and iron, while erosion by the physical damage through flowing sand. When it comes to the prediction model which could accommodate both events, complex phenomena related to physics, chemistry and metallurgy should be put into account. In this paper, we develop a new-integrated corrosion-erosion model which can calculate the corrosion-erosion rate by considering the interactions among type of passive layer (mackinawite and siderite), formation and removal rate of passive layer, and surface reaction rate. The integrated model consists of fluid flow in pipes equation, kinetics of reaction, fundamental diffusion law, empirical erosion equation and fundamental Faraday’s law. Corrosion-erosion rate is obtained through iteration scenario after establishing pressure and temperature from fluid flow in pipes equation. Pipe dimension used in the simulation has tubing ID 2.992 in for vertical pipe and flowline ID 2.992 in for horizontal pipe. Simulations were conducted using hypothetic gas field data with variation of hydrogen sulfide and carbon dioxide composition. In constant erosion rate, when the hydrogen sulfide percentage is significantly greater than carbon dioxide, corrosion is more dominant than passive layer formation. However, when the carbon dioxide percentage is greater than that of hydrogen sulfide, the passive layer tends to form, resulting in scaling. These results can be explained by the faster formation rate of siderite than mackinawite. Finally, the proposed model can explain clearly the phenomena of corrosion-erosion and scaling by simplifying the complex phenomena occurred.

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“…Citrate is used widely as an iron-sequestering agent in the oil field. In addition to the formation of soluble Fe-citrate complexes, it was reported recently (Yean et al 2008) that citrate is able to act as a kinetic inhibitor for ferrous carbonate scale control. The effect of citrate on the performance of modified phosphonate inhibitors against calcium carbonate scale was also observed in the presence of 200 ppm Fe 2+ in this study.…”

Section: Static Bottlementioning

confidence: 99%

Evaluation of Scale Inhibitors in Marcellus High-Iron Waters

Dong

Shcolnik

Perkins³

et al. 2012

Oil and Gas Facilities

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The Marcellus waters of Pennsylvania and West Virginia commonly contain elevated levels of calcium, barium, and iron. Theoretical analyses of these waters indicate a propensity toward the formation of calcium carbonate, barium sulfate, strontium sulfate, and iron-related scales. The high level of dissolved iron commonly present in the water adversely affects the ability of the scale inhibitor to inhibit calcium carbonate scale. In this study, the inhibition performance of two new chemicals and some commercial products was evaluated under static and dynamic test conditions using synthetic Marcellus waters at varying iron concentrations. It was shown that both new chemicals were able to control calcium carbonate scale effectively in the presence of dissolved iron up to 200 ppm, whereas the performance of polycarboxylic acid, amino tri(methylene phosphonic) acid, and carboxymethyl inulin dropped sharply even in the presence of small amounts of Fe 2+ (5 ppm). The inclusion of iron-sequestering agents with these chemicals and the effect of iron upon calcium sulfate inhibition are also discussed in this paper.

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Ferrous Carbonate Nucleation and Inhibition

Cited by 22 publications

References 14 publications

Enhanced Arsenic (III and V) Removal in Anoxic Environments by Hierarchically Structured Citrate/FeCO3 Nanocomposites

Enhanced Arsenic (III and V) Removal in Anoxic Environments by Hierarchically Structured Citrate/FeCO3 Nanocomposites

Integrated CO2-H2S corrosion-erosion modeling in gas production tubing and pipeline by considering passive layer activity

Evaluation of Scale Inhibitors in Marcellus High-Iron Waters

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