Effect of the Concentration of Sodium Chloride on the Polymerization of Silicic Acid

Yoko Takahashi, Takushi Yokoyama, Toshikazu Tarutani

研究成果: ジャーナルへの寄稿学術誌査読

15 被引用数 (Scopus)

抄録

Silica deposition from the high salinity geothermal water of the Fushime area in Kagoshima prefecture occurs within a relatively short time. Therefore, the effect of sodium chloride concentration on the polymerization of silicic acid and the precipitation of silica was studied by spectrophotometry and gel chromatography at 25 and 90°C. The concentration range of sodium chloride was 0.05-2.5 mol dm-3, and the pH range 6 - 9. At a given pH, the rate of decrease in the monosilicic acid concentration increased by increasing the sodium chloride concentration. It results from an increase in the supersaturated concentration of monosilicic acld due to a decrease in the solubility of amorphous silica. The precipitation rate of silica also increased by increasing the sodium chloride concentration, because the reaction between polysilicic acids was accelerated due to the decrease in electrostatic repulsion among polysilicic acids.

本文言語英語
ページ(範囲)225-235
ページ数11
ジャーナルjournal of the geothermal research society of japan
10
3
DOI
出版ステータス出版済み - 1988
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 地球物理学

フィンガープリント

「Effect of the Concentration of Sodium Chloride on the Polymerization of Silicic Acid」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル