TY - JOUR
T1 - Effect of polysilicic acid on the precipitation of calcium carbonate
AU - Bai, Shuqin
AU - Naren, Gaowa
AU - Nakano, Mitihiro
AU - Okaue, Yoshihiro
AU - Yokoyama, Takushi
N1 - Funding Information:
The present work is supported by National Natural science Foundation of China (21066006), Inner Mongolia Natural Science foundation (2010MS0617) and Program of Higher-Level talents of Inner Mongolia University (Z20090128). This study also supported by Grant-in-Aid for the Global COE Program, “Science for Future Molecular Systems” from the Ministry of Education, Culture, Science, Sports and Technology of Japan. This study was also financially supported from Kyushu University Interdisciplinary Programs in Education and Projects in Research Development.
PY - 2014/3/20
Y1 - 2014/3/20
N2 - The precipitations of calcium carbonate (CaCO3) from supersaturated solutions were investigated in the absence and presence of polysilicic acid under the condition of pH 9 at room temperature. The turbidity of the CaCO3 solution in the presence of polysilicic acid was lower than that in the absence of polysilicic acid, suggesting that the polysilicic acid inhibits the precipitation of CaCO3. The turbidity of solutions was distinctly decreased with increasing the polysilicic acid concentration. SEM images of the precipitates provide visual evidence that colloidal silica adhered to active growth sites of CaCO3 nucleus through electrostatic attraction to inhibit the growth of CaCO3 crystals.
AB - The precipitations of calcium carbonate (CaCO3) from supersaturated solutions were investigated in the absence and presence of polysilicic acid under the condition of pH 9 at room temperature. The turbidity of the CaCO3 solution in the presence of polysilicic acid was lower than that in the absence of polysilicic acid, suggesting that the polysilicic acid inhibits the precipitation of CaCO3. The turbidity of solutions was distinctly decreased with increasing the polysilicic acid concentration. SEM images of the precipitates provide visual evidence that colloidal silica adhered to active growth sites of CaCO3 nucleus through electrostatic attraction to inhibit the growth of CaCO3 crystals.
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U2 - 10.1016/j.colsurfa.2014.01.008
DO - 10.1016/j.colsurfa.2014.01.008
M3 - Article
AN - SCOPUS:84893357678
SN - 0927-7757
VL - 445
SP - 54
EP - 58
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -