Physicochemical processes during precipitation of silica from geothermal brine

被引：5

作者：

Potapov, VV ^{[1
]}

机构：

[1] Russian Acad Sci, Far E Div, Geotechnol Res Ctr, Petrozavodsk 683002, Russia

来源：

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING | 2004年 / 38卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1023/B:TFCE.0000014392.19065.77

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Physicochemical properties of the silica-geothermal brine colloidal system are investigated. The reaction order and the rate constants for silica polymerization are determined, the radius of colloidal particles is measured, and their charge is estimated. The mechanism of coagulation and precipitation of colloidal silica by metal cations is experimentally studied. On the basis of the results obtained, a basic process to recover silica from the geothermal heat-transfer medium is designed.

引用

页码：72 / 80

页数：9

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