کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5204000 | 1381946 | 2009 | 5 صفحه PDF | دانلود رایگان |
As a preliminary experiment for the development of an effective silica scale inhibitor at geothermal power plants, the effect of tiron, a ligand to monosilicic acid, on the polymerization of silicic acid was investigated by gel chromatographic method. The experiments were carried out at Si concentration of 400Â ppm (14Â mM) and at pH 8 where are a similar condition to geothermal water. The tiron concentration was varied (0-50Â mM). At 30Â mM of tiron, the polymerization of silicic acid occurred rapidly within first 1Â h in spite of the presence of tiron, however, polysilicic acids were depolymerized by tiron. The depolymerization mechanism of polysilicic acids was discussed based on zeta potentials for silica gel particles in the absence and presence of tiron.
Journal: Polymer Degradation and Stability - Volume 94, Issue 10, October 2009, Pages 1795-1799