HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (3) Citing Articles via Google Scholar Google Scholar Articles by Sherman, L. A. Articles by Barak, P. Search for Related Content PubMed Articles by Sherman, L. A. Articles by Barak, P. GeoRef GeoRef Citation Agricola Articles by Sherman, L. A. Articles by Barak, P.

Solubility and Dissolution Kinetics of Dolomite in Ca–Mg–HCO₃/CO₃ Solutions at 25°C and 0.1 MPa Carbon Dioxide

^a Dep. of Chemistry, Washington College, 300 Washington Ave., Chestertown, MD 21620-1197 USA
^b Dep. of Soil Science, Univ. of Wisconsin-Madison, 1525 Observatory Dr., Madison, WI 53706-1299 USA

View larger version (26K): [in a new window]   Fig. 1 Literature values of the dolomite solubility product

View larger version (23K): [in a new window]   Fig. 2 Dissolution and precipitation in dolomite-seeded Ca–Mg–HCO3/CO3 solutions and deionized water: change in Ca2+ concentration over values in control unseeded solutions (Ca2+) against change in alkalinity over values in control unseeded solutions (Alk)

View larger version (16K): [in a new window]   Fig. 3 Calculated pIAPcalcite [= -log (Ca2+)(CO2-3)] in dolomite-seeded against control unseeded Ca–Mg–HCO3/CO3 solutions with 1:1, 2:1, and 4:1 Mg/Ca at 7, 14, 28, 56, 112, 224, 448, and 672 d. Dashed line indicates no difference between seeded and unseeded control

View larger version (17K): [in a new window]   Fig. 4 Calculated pIAPcalcite in calcite-seeded against control unseeded Ca–Mg–HCO3/CO3 solutions with 1:1, 2:1, and 4:1 Mg/Ca at 7, 14, 28, 56, 112, 224, and 448 d. Dashed line indicates no difference between seeded and unseeded control

View larger version (18K): [in a new window]   Fig. 5 Calculated pIAPdolomite [= -log (Ca2+)(Mg2+)(CO2-3)2] in dolomite-seeded against control unseeded Ca–Mg–HCO3/CO3 solutions with 1:1, 2:1, and 4:1 Mg/Ca at 7, 14, 28, 56, 112, 224, 448, and 672 d. Dashed line indicates no difference between seeded and unseeded control

View larger version (16K): [in a new window]   Fig. 6 Dissolution of dolomite in undersaturated Ca–Mg–HCO3–CO3 solutions with 1:1 Mg/Ca and in deionized water: (a) Change in Ca2+ over values in control unseeded solutions against change in Mg2+ concentrations over values in control unseeded solutions (Ca2+ and Mg2+, respectively). (b) Change in the sum of Ca2+ and Mg2+ concentrations over values in control unseeded solutions(Ca2+ + Mg2+) against change in alkalinity over values in control unseeded solutions (Alk)

View larger version (21K): [in a new window]   Fig. 7 Evaluation of successive reaction kinetic model of Chou et al. (1989) based on dolomite dissolution near equilibrium. Rate of change in alkalinity in dolomite-seeded Ca–Mg–HCO3–CO3 solutions, pIAPdolomite ranging from 17.0 to 19.0, plotted against (H+)2/(Ca2+)(HCO-3)

View larger version (20K): [in a new window]   Fig. 8 Relationship between the rate of change in alkalinity in dolomite-seeded Ca–Mg–HCO3/CO3 solutions and pIAPdolomite. Control lines are 95% confidence and prediction lines from the unseeded Ca–Mg–HCO3/CO3 solutions, corresponding with the hypothesis of no alkalinity change due to dolomite dissolution. Lines connect individual dolomite-seeded solutions from 0 to 672 d