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• W2794095909 abstract "Abstract The dissolution kinetics of K-montmorillonite was studied at 25 °C, acidic pH (2–4) and 0.01 M ionic strength by means of well-mixed flow-through experiments. The variations of Si, Al and Mg over time resulted in high releases of Si and Mg and Al deficit, which yielded long periods of incongruent dissolution before reaching stoichiometric steady state. This behavior was caused by simultaneous dissolution of nanoparticles and cation exchange between the interlayer K and released Ca, Mg and Al and H. Since Si was only involved in the dissolution reaction, it was used to calculate steady-state dissolution rates, RSi, over a wide solution saturation state (ΔGr ranged from −5 to −40 kcal mol−1). The effects of pH and the degree of undersaturation (ΔGr) on the K-montmorillonite dissolution rate were determined using RSi. Employing dissolution rates farthest from equilibrium, the catalytic pH effect on the K-montmorillonite dissolution rate was expressed as Rdiss = k·aH0.56±0.05 whereas using all dissolution rates, the ΔGr effect was expressed as a non-linear f(ΔGr) function R diss = k · 1 - exp - 3.8 × 10 - 4 · | Δ G r | RT 2.13 The functionality of this expression is similar to the equations reported for dissolution of Na-montmorillonite at pH 3 and 50 °C (Metz, 2001) and Na-K-Ca-montmorillonite at pH 9 and 80 °C (Cama et al., 2000; Marty et al., 2011), which lends support to the use of a single f(ΔGr) term to calculate the rate over the pH range 0–14. Thus, we propose a rate law that also accounts for the effect of pOH and temperature by using the pOH-rate dependence and the apparent activation energy proposed by Rozalen et al. (2008) and Amram and Ganor (2005), respectively, and normalizing the dissolution rate constant with the edge surface area of the K-montmorillonite. 1D reactive transport simulations of the experimental data were performed using the Crunchflow code (Steefel et al., 2015) to quantitatively interpret the evolution of the released cations and to elucidate the stoichiometry of the reaction. After the implementation of (i) the obtained f(ΔGr) term in the K-montmorillonte dissolution rate law, (ii) a fraction of highly reactive particles and surfaces and (iii) the cation exchange reactions between the interlayer K+ and the released Al3+, Mg2+, Ca2+ and H+, the simulations agreed with the experimental concentrations at the outlet. This match indicates that fast dissolution of fine particles and highly reactive sites and exchange between the interlayer K and dissolved structural cations (Al and Mg) and protons are responsible for the temporary incongruency of the K-montmorillonite dissolution reaction. As long as dissolution of the bulk sample predominates, the reaction is stoichiometric." @default.
• W2794095909 created "2018-03-29" @default.
• W2794095909 creator A5042321529 @default.
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• W2794095909 date "2018-04-01" @default.
• W2794095909 modified "2023-09-27" @default.
• W2794095909 title "Montmorillonite dissolution kinetics: Experimental and reactive transport modeling interpretation" @default.
• W2794095909 cites W129521122 @default.
• W2794095909 cites W1965163961 @default.
• W2794095909 cites W1970214725 @default.
• W2794095909 cites W1971718165 @default.
• W2794095909 cites W1972595903 @default.
• W2794095909 cites W1972941971 @default.
• W2794095909 cites W1973560932 @default.
• W2794095909 cites W1974185986 @default.
• W2794095909 cites W1974444716 @default.
• W2794095909 cites W1974676251 @default.
• W2794095909 cites W1979160364 @default.
• W2794095909 cites W1980728284 @default.
• W2794095909 cites W1981623999 @default.
• W2794095909 cites W1983156380 @default.
• W2794095909 cites W1985198298 @default.
• W2794095909 cites W1987285774 @default.
• W2794095909 cites W1989664729 @default.
• W2794095909 cites W1990846100 @default.
• W2794095909 cites W1996467331 @default.
• W2794095909 cites W1996768414 @default.
• W2794095909 cites W1997144734 @default.
• W2794095909 cites W1997792701 @default.
• W2794095909 cites W1998096686 @default.
• W2794095909 cites W2008292009 @default.
• W2794095909 cites W2009916340 @default.
• W2794095909 cites W2010621570 @default.
• W2794095909 cites W2011254969 @default.
• W2794095909 cites W2017018266 @default.
• W2794095909 cites W2018337351 @default.
• W2794095909 cites W2020543387 @default.
• W2794095909 cites W2024497719 @default.
• W2794095909 cites W2025655404 @default.
• W2794095909 cites W2028610563 @default.
• W2794095909 cites W2031384515 @default.
• W2794095909 cites W2032739155 @default.
• W2794095909 cites W2033747660 @default.
• W2794095909 cites W2036278155 @default.
• W2794095909 cites W2040757716 @default.
• W2794095909 cites W2041803734 @default.
• W2794095909 cites W2043843726 @default.
• W2794095909 cites W2046251009 @default.
• W2794095909 cites W2047254543 @default.
• W2794095909 cites W2049380594 @default.
• W2794095909 cites W2052090210 @default.
• W2794095909 cites W2071691798 @default.
• W2794095909 cites W2073224399 @default.
• W2794095909 cites W2073381089 @default.
• W2794095909 cites W2078194126 @default.
• W2794095909 cites W2082203859 @default.
• W2794095909 cites W2083425174 @default.
• W2794095909 cites W2088828290 @default.
• W2794095909 cites W2090345400 @default.
• W2794095909 cites W2092943941 @default.
• W2794095909 cites W2095236437 @default.
• W2794095909 cites W2105022025 @default.
• W2794095909 cites W2108517836 @default.
• W2794095909 cites W2124781550 @default.
• W2794095909 cites W2147220893 @default.
• W2794095909 cites W2147695216 @default.
• W2794095909 cites W2151055668 @default.
• W2794095909 cites W2157329706 @default.
• W2794095909 cites W2160866493 @default.
• W2794095909 cites W2188191110 @default.
• W2794095909 cites W2198846586 @default.
• W2794095909 cites W2245491876 @default.
• W2794095909 cites W2257513595 @default.
• W2794095909 cites W2259209494 @default.
• W2794095909 cites W2267645925 @default.
• W2794095909 cites W2267907709 @default.
• W2794095909 cites W2314276023 @default.
• W2794095909 cites W2326809482 @default.
• W2794095909 cites W2334826360 @default.
• W2794095909 cites W2337748237 @default.
• W2794095909 cites W2342419025 @default.
• W2794095909 cites W2381069085 @default.
• W2794095909 cites W2414031859 @default.
• W2794095909 cites W2470412187 @default.
• W2794095909 cites W2520198938 @default.
• W2794095909 cites W2558677103 @default.
• W2794095909 cites W2588295270 @default.
• W2794095909 cites W4255722280 @default.
• W2794095909 cites W2125514718 @default.
• W2794095909 doi "https://doi.org/10.1016/j.gca.2018.01.039" @default.
• W2794095909 hasPublicationYear "2018" @default.
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