The pH-dependent transformation of schwertmannite to goethite at 25°C

被引：123

作者：

Schwertmann, U ^{[1
]}

Carlson, L

机构：

[1] Tech Univ Munich, Lehrstuhl Bodenkunde, D-85350 Freising Weihenstephan, Germany

[2] Geol Survey Finland, FIN-02151 Espoo, Finland

来源：

CLAY MINERALS | 2005年 / 40卷 / 01期

关键词：

schwertmannite; goethite; transformation; RT; pH; XRD; SEM;

D O I：

10.1180/0009855054010155

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

At 25 degrees C, synthetic schwertmannite, a common iron compound in acid mine drainage, completely converted in water to a sulphate-containing goethite within similar to 100 days. The rate of transformation doubled as the pH increased from 4.0 to 7.2. In deviation from its normal acicular habit, the goethite appeared as spherical aggregates.

引用

页码：63 / 66

页数：4

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