Kinetics of Reductive Dissolution of Hematite by Bioreduced Anthraquinone-2,6-disulfonate
نویسندگان
چکیده
منابع مشابه
Kinetics of reductive dissolution of hematite by bioreduced anthraquinone-2,6-disulfonate.
The reductive dissolution of hematite (alpha-Fe2O3) was investigated in a flow-through system using AH2DS, a reduced form of anthraquinone-2,6-disulfonate (AQDS), which is often used as a model electron shuttling compound in studies of dissimilatory microbial reduction of iron oxides. Influent flow rate, pH, and Fe(II) and phosphate concentrations were varied to investigate the redox kinetics i...
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Reaction of hydroquinone with hematite; II. Calculated electron-transfer rates and comparison to the reductive dissolution rate.
The rate of reaction of hematite with quinones and the quinone moieties of larger molecules may be an important factor in limiting the rate of reductive dissolution of hematite, especially by iron-reducing bacteria. It is possible that the rate of reductive dissolution of hematite in the presence of excess hydroquinone at pH 2.5 may be limited by the electron-transfer rate. Here, a reductive di...
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ژورنال
عنوان ژورنال: Environmental Science & Technology
سال: 2007
ISSN: 0013-936X,1520-5851
DOI: 10.1021/es070768k