Effects of seed material and solution composition on calcite precipitation

Abstract We studied the effects of seed material and solution composition on calcite crystal precipitation using a pH-stat system. The seed materials investigated included quartz, dolomite, two calcites with different particle size and specific surface area, and two dried precipitates from precipitative softening water treatment plants. Our results indicated that, of the seed materials examined, only calcite had the ability to initiate calcite precipitation in a solution with a degree of supersaturation of 5.3 over a period of two hours, and that the precipitation rate was proportional to the available surface area of the seed. For different solution compositions with the same degree of supersaturation, the calcite precipitation rate increased with increasing carbonate/calcium ratio, which contradicts the generally accepted empirical rate expression that the degree of supersaturation is the sole factor controlling precipitation kinetics. By applying a surface complexation model, the surface concentrations of two species, >CO3− and >CaCO3−, appear to be responsible for catalyzing calcite precipitation.

[1]  R. Reeder.  Interaction of divalent cobalt, zinc, cadmium, and barium with the calcite surface during layer growth , 1996 .

[2]  J. M. Astilleros,et al.  Molecular-scale surface processes during the growth of calcite in the presence of manganese , 2002 .

[3]  P. Dove,et al.  The role of Mg2+ as an impurity in calcite growth. , 2000, Science.

[4]  P. Dove,et al.  Calcite precipitation mechanisms and inhibition by orthophosphate: In situ observations by Scanning Force Microscopy , 1993 .

[5]  D. Suarez,et al.  Kinetics and Mechanisms of Precipitation of Calcite as Affected by PCO2 and Organic Ligands at 25°C , 1998 .

[6]  W. Casey,et al.  Rate of water exchange between Al(C2O4)(H2O)4+(aq) complexes and aqueous solutions determined by 17O-NMR spectroscopy , 1997 .

[7]  G. H. Nancollas,et al.  CRYSTAL GROWTH KINETICS OF MINERALS ENCOUNTERED IN WATER TREATMENT PROCESSES. , 1973 .

[8]  L. Charlet,et al.  A surface complexation model of the carbonate mineral-aqueous solution interface , 1993 .

[9]  A. Mucci,et al.  Calcite precipitation in seawater using a constant addition technique: A new overall reaction kinetic expression , 1993 .

[10]  A. Rubin.  Aqueous-environmental chemistry of metals , 1974 .

[11]  David L. Parkhurst,et al.  The kinetics of calcite dissolution in CO 2 -water systems at 5 degrees to 60 degrees C and 0.0 to 1.0 atm CO 2 , 1978 .

[12]  W. Inskeep,et al.  Calcium Carbonate Supersaturation in Soil Solutions of Calciaquolls , 1986 .

[13]  J. A. Davis,et al.  Surface complexation modeling in aqueous geochemistry , 1990 .

[14]  I. Kolthoff.  Treatise on analytical chemistry , 1959 .

[15]  S. Weiner,et al.  Interactions between acidic proteins and crystals: stereochemical requirements in biomineralization. , 1985, Proceedings of the National Academy of Sciences of the United States of America.

[16]  S. Weiner,et al.  A chemical model for the cooperation of sulfates and carboxylates in calcite crystal nucleation: Relevance to biomineralization. , 1987, Proceedings of the National Academy of Sciences of the United States of America.

[17]  C. Klein,et al.  Manual of mineralogy , 1864 .

[18]  P. Dove,et al.  Thermodynamics of calcite growth: baseline for understanding biomineral formation , 1998, Science.

[19]  R. Garrels,et al.  Comparative study of the kinetics and mechanisms of dissolution of carbonate minerals , 1989 .

[20]  Paul R. Bloom,et al.  An evaluation of rate equations for calcite precipitation kinetics at pCO2 less than 0.01 atm and pH greater than 8 , 1985 .

[21]  D. Cicerone,et al.  Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter , 1992 .

[22]  Susan L. Brantley,et al.  Kinetics of near-equilibrium calcite precipitation at 100°C: An evaluation of elementary reaction-based and affinity-based rate laws , 1995 .

[23]  P. Zuddas,et al.  Kinetics of Calcite Precipitation from Seawater: II. The Influence of the Ionic Strength , 1998 .

[24]  J. M. Astilleros,et al.  The effect of barium on calcite {104} surfaces during growth , 2000 .

[25]  W. House.  Kinetics of crystallisation of calcite from calcium bicarbonate solutions , 1981 .

[26]  Stephen Mann,et al.  Controlled crystallization of CaCO3 under stearic acid monolayers , 1988, Nature.

[27]  P. Zuddas,et al.  Kinetics of calcite precipitation from seawater: I. A classical chemical kinetics description for strong electrolyte solutions , 1994 .

[28]  Michael M Reddy,et al.  Crystallization of calcium carbonate in the presence of metal ions , 1980 .

[29]  J. Morse.  Chapter 7. The KINETICS of CALCIUM CARBONATE DISSOLUTION and PRECIPITATION , 1983 .

[30]  H. Meyer.  The influence of impurities on the growth rate of calcite , 1984 .

[31]  A. Graveland,et al.  Developments in water softening by means of pellet reactors , 1983 .

[32]  Dudley W. Thompson,et al.  Surface electrical properties of calcite , 1989 .

[33]  O. Pokrovsky,et al.  Surface speciation models of calcite and dolomite/aqueous solution interfaces and their spectroscopic evaluation , 2000 .

[34]  W. Casey,et al.  The rates of exchange of water molecules from Al(III)-methylmalonate complexes: The effect of chelate ring size , 1998 .

[35]  J. Sternbeck,et al.  A mechanistic model for calcite crystal growth using surface speciation , 1999 .

[36]  R. Berner,et al.  Inhibition of aragonite precipitation from supersaturated seawater; a laboratory and field study , 1978 .

[37]  A. Mucci.  Growth kinetics and composition of magnesian calcite overgrowths precipitated from seawater: Quantitative influence of orthophosphate ions , 1986 .

[38]  R. C. Reynolds.  Polyphenol inhibition of calcite precipitation in Lake Powell 1 , 1978 .

[39]  Donald L. Suarez,et al.  Calcite nucleation and precipitation kinetics as affected by dissolved organic matter at 25°C and pH > 7.5 , 1996 .

[40]  G. H. Nancollas,et al.  The crystallization of calcium carbonate , 1971 .

[41]  A. Wierzbicki,et al.  Formation of chiral morphologies through selective binding of amino acids to calcite surface steps , 2001, Nature.

[42]  S. Stipp.  Toward a conceptual model of the calcite surface: hydration, hydrolysis, and surface potential , 1999 .

[43]  P. Dove,et al.  Kinetics of calcite growth: Surface processes and relationships to macroscopic rate laws , 2000 .

[44]  G. H. Nancollas,et al.  The crystallization of calcium carbonate. II. Calcite growth mechanism , 1971 .

[45]  A. E. Nielsen.  Electrolyte crystal growth mechanisms , 1984 .

[46]  A. Hoch,et al.  Calcite Crystal Growth Rate Inhibition by Polycarboxylic Acids. , 2001, Journal of colloid and interface science.

[47]  G. Aiken,et al.  Calcite crystal growth inhibition by humic substances with emphasis on hydrophobic acids from the Florida Everglades , 2000 .

[48]  G. K. Pagenkopf.  KINETICS AND MECHANISMS OF COMPLEX FORMATION AND LIGAND EXCHANGE , 1978 .

[49]  Cornelius van der Veen,et al.  Central Softening by Crystallization in a Fluidized‐Bed Process , 1988 .

[50]  R. Reeder,et al.  Relationship between surface structure, growth mechanism, and trace element incorporation in calcite , 1995 .

[51]  John Sternbeck,et al.  Kinetics of rhodochrosite crystal growth at 25°C: The role of surface speciation , 1997 .