morphological investigation of calcium carbonate during

Morphological Investigation of Calcium Carbonate during ...

3.3. Controlling the Morphology of Calcium Carbonate by Electrolyte and Surfactant. With different types of electrolyte, ammonia can have different effects on calcium carbonate particles, as shown in Figures 5(a) and 5(b). When adding inorganic salt to increase the ion strength, morphology of calcium carbonate particles has two conspicuous changes.

Morphological investigation of calcium carbonate during ...

Ultrafine calcium carbonate is a widely used cheap additive. The research is conducted in low degree supersaturation solution in order to study the polymorphic phases' change and its factors of the calcium carbonate precipitate in the ammonification-carbonization process of the solution with calcium.

Morphological Investigation of Calcium Carbonate during ...

Over 98% of the calcium carbonate precipitate without ammonification resembles the morphology of calcite, while the introduction of ammonia can benefit the formation of vaterite.

Continuous synthesis of precipitated calcium carbonate ...

Precipitated calcium carbonate (PCC), which is a pure form of calcium carbonate, exists in six main different forms (polymorphs), namely, calcite, aragonite, vaterite, calcium carbonate monohydrate, calcium carbonate hexahydrate, and amorphous calcium carbonate.

Strain-Specific Ureolytic Microbial Calcium Carbonate ...

During a study of ureolytic microbial calcium carbonate (CaCO 3) precipitation by bacterial isolates collected from different environmental samples, morphological differences were observed in the large CaCO 3 crystal aggregates precipitated within bacterial colonies grown on agar. Based on these differences, 12 isolates were selected for further study.

Surface Structure and Morphology of Calcium Carbonate ...

of research is growth inhibition and morphology change. As the concentration of calcium carbonate in many natural waters exceeds the saturation level, the precipitation of calcite in industrial boilers, transportation pipes, and desalination plants is of concern,15 and it is therefore important to learn how morphology may be affected or induced.

Published in: Journal of Physical Chemistry B · 1998Authors: N H De Leeuw · Stephen C ParkerAbout: Polymorphism · Adsorption · Calcium carbonate · Magnesium · Crystallization

Inhibition by Poly(acrylic acid) and Morphological Changes ...

Inhibition by Poly(acrylic acid) and Morphological Changes in Calcium Carbonate and Calcium Carbonate/Calcium Sulfate Crystallization on Silica Fibers

Published in: Industrial & Engineering Chemistry Research · 2014Authors: Ali Alhamzah · Andrew D Wallace · Christopher P East · William O S Doherty · E J Smith

Evaluation of the Poly (Lactic Acid) and Calcium …

fillers thermally destabilized the matrix. The morphological properties showed a uniform dispersion of the fillers in the composites and blends, however it is weaker with PLA. Because the PBAT matrix surface is, intrinsically, hydrophobic, the composites presented a smaller degree of hydrophobicity, while the PLA makes the blends hydrophilic.

Morphology and Crystallization Character of Calcium ...

Morphology and Crystallization Character of Calcium Carbonate in Scaled Sample Formed During Alkaline-surfactant-polymer(ASP) Flooding in Daqing Oilfield: CHENG Jie-Cheng 1, ZHOU Wan-Fu 1, WANG Qing-Guo 1, CHENG Tie-Xin 2

A novel phenomenon of effect of metal on calcium …

A novel phenomenon of effect of metal on calcium carbonate scale, morphology, polymorphism and its deposition. ... J. Ding and Z. Q. Shen: ‘ Investigation of calcium carbonate scaling inhibition and scale morphology by AFM ’, J. Colloid Interface Sci., 2001 ... due to the formation of CaCO 3 during the course of sludge precipitation or ...

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