A small-scale flow-through column system to determine the rates of mineral dissolution at high temperature and pressure

Parthasarathy, Hariprasad; Dzombak, David A.; Karamalidis, Athanasios K.

doi:10.1016/j.chemgeo.2013.06.020

Cited by 8 publications

(8 citation statements)

References 27 publications

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“…However, for very slow reactions, the analysis of data from plug flow reactor systems can be simplified, as demonstrated by Parthasarathy et al (2013). Briefly, Parthasarathy et al (2013) showed that when the rate of reaction is much slower than the rate of mass transfer, the plug-flow system is under reaction rate control and the rate of a dissolution reaction can be determined directly from the effluent elemental concentrations using Eq. (1).…”

Section: Experimental Setup and Analytical Methodsmentioning

confidence: 99%

“…Experiments were conducted in a small-scale plug-flow column system described by Parthasarathy et al (2013), under nitrogen atmosphere. Although most mineral dissolution experiments are conducted in batch or mixed flow reactor systems, plug-flow reactors have some advantages for study of mineral dissolution, including inherently high solid-liquid ratios (Rimstidt and Newcomb, 1993).…”

Section: Experimental Setup and Analytical Methodsmentioning

confidence: 99%

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Alkali and alkaline earth metal chloride solutions influence sulfide mineral dissolution

2015

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Alkali and alkaline metal chlorides have been considered as inert electrolyte species with respect to sulfide mineral dissolution in the presence of oxidizing agents such as O 2 and Fe 3+ . Under anoxic conditions in the laboratory or the field, as exist in most saline subsurface environments, the potential reactivity of alkali and alkaline metal chlorides with sulfide minerals has typically been ignored. Arsenopyrite (FeAsS(s)), galena (PbS(s)), and pyrite (FeS 2 (s)) are commonly encountered sulfide mineral phases, the dissolution of which affects many ecosystems. In this study, dissolution experiments with these minerals were conducted under anoxic conditions with 10 mM solutions of NaCl, CaCl 2 , and MgCl 2 at constant pH of 2.56. Results show that these electrolytes affect sulfide mineral dissolution under anoxic conditions, either increasing or decreasing the rate. The extent to which sulfide mineral dissolution is affected is small but measurable and depends on the anionic species in the mineral and cationic species in solution. Specifically, the dissolution of arsenic from arsenopyrite increased with an increase in cation activity in solution, while the dissolution of sulfur decreased with an increase in chloride ion activity. These results suggest that sulfide mineral dissolution under anoxic conditions is caused by an interaction of cations in solution with anions on the mineral surface, and inhibited by the presence of competing anions in solution.

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Section: Experimental Setup and Analytical Methodsmentioning

confidence: 99%

Section: Experimental Setup and Analytical Methodsmentioning

confidence: 99%

Alkali and alkaline earth metal chloride solutions influence sulfide mineral dissolution

2015

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“…In this study, we investigated an As‐bearing mineral dissolution scenario proposed by Parthasarathy et al . that causes As release under GCS conditions, and a reservoir‐scale numerical model was developed using two parameters from Parthasarathy et al . to evaluate the impact of As release.…”

Section: Introductionmentioning

confidence: 99%

“…to evaluate the impact of As release. Specifically, the dissolution rate constant of arsenopyrite (10 −8.09 mol/m 2 /s) and the specific surface area of arsenopyrite (0.04 m 2 /g) experimentally determined by Parthasarathy et al . were used in this study.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on arsenopyrite dissolution and As (III) migration under geologic carbon storage conditions: A numerical simulation approach

2016

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REVIEW 399 Synthesis of bare and functionalized porous adsorbent materials for CO 2 capture Abass A. Olajire ORIGINAL RESEARCH ARTICLES 460 Investigation on arsenopyrite dissolution and As (III) migration under geologic carbon storage conditions: A numerical simulation approach 500 Strength varying laws of rock soaked with supercritical CO 2 drilling fluid and the prediction of safe mud weight window Baojiang Sun and Hongkun Zhang 512 Effect of leakage pathway flow properties on thermal signal associated with the leakage from CO 2 storage zone

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An experimental study on major element release from the sediments in the Changjiang (Yangtze River) Estuary

Guo

Yang

2015

J. Ocean Univ. China

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A small-scale flow-through column system to determine the rates of mineral dissolution at high temperature and pressure

Cited by 8 publications

References 27 publications

Alkali and alkaline earth metal chloride solutions influence sulfide mineral dissolution

Alkali and alkaline earth metal chloride solutions influence sulfide mineral dissolution

Investigation on arsenopyrite dissolution and As (III) migration under geologic carbon storage conditions: A numerical simulation approach

An experimental study on major element release from the sediments in the Changjiang (Yangtze River) Estuary

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