Solubilities of synthetic schwertmannite and ferrihydrite.
نویسندگان
چکیده
منابع مشابه
Scavenging of As from acid mine drainage by schwertmannite and ferrihydrite: a comparison with synthetic analogues.
Ochreous precipitates containing 5.5-69.8 g/kg As were isolated from mine drainage in Finland and were composed of schwertmannite, ferrihydrite, and goethite. Schwertmannite formation was favored at pH 3-4, but its structure was degraded at high As levels. A series of coprecipitates were therefore prepared from mixed iron arsenate/sulfate solutions to define the limits of schwertmannite stabili...
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متن کاملTransformation of 2-line ferrihydrite to 6-line ferrihydrite under oxic and anoxic conditions
Mineralogical transformations of 2-line ferrihydrite were studied under oxic and Fe-reducing conditions to establish the role, if any, of 6-line ferrihydrite (“well” organized ferrihydrite) in the reaction pathway and as a final product. In oxic experiments, concentrated suspensions (0.42 mol/L Fe in 0.1 mol/L NaClO4) of freshly synthesized 2-line ferrihydrite, with and without 3% Ni, were aged...
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ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 2002
ISSN: 0016-7002
DOI: 10.2343/geochemj.36.119