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

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At 25–C, synthetic schwertmannite, a common iron compound in acid mine drainage, completely converted in water to a sulphate-containing goethite within ∼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.
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Keywords: GOETHITE; PH; RT; SCHWERTMANNITE; SEM; TRANSFORMATION; XRD

Document Type: Research Article

Publication date: 2005-03-01

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