Reduction of Hg(II) by Fe(II)-Bearing Smectite Clay Minerals
نویسندگان
چکیده
منابع مشابه
Synthesis of Smectite Clay Minerals: a Critical Review
-Smectites are one of the most important groups of phyllositicates found in soils and sediments, and certainly one of the most difficult to study. New information about the formation mechanisms, impact of structural features on surface properties, and long-term stability of smectites can best be gained from the systematic study of single-phase specimens. In most instances, these specimens can o...
متن کاملThe impact of structural Fe(III) reduction by bacteria on the surface chemistry of smectite clay minerals
Although clay mineral reduction is thought to occur primarily as a result of the activity of indigenous microorganisms in soil, most research has focused on chemical mechanisms of Fe reduction within clay minerals. Here we show that bacteria isolated from soils and sediments catalyze the rapid reduction of structural Fe(III) in the smectite clay minerals. The extent of Fe(III) reduction is larg...
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Reduction of nitroaromatic compounds by iron(ii) reduced clay minerals." MS (Master of Science) thesis, undergraduate freshman I have had more than just support from this department as this department has become like family to me. I would like to give a special thanks to Dr. Michelle Scherer for giving the privilege to join her research group as an undergraduate student and for guiding me throu...
متن کاملMicrobial reduction of Fe(III)-bearing clay minerals in the presence of humic acids
Both Fe(III)-bearing clay minerals and humic acids (HAs) are abundant in the soils and sediments. Previous studies have shown that bioreduction of structural Fe(III) in clay minerals could be accelerated by adding anthraquinone compound as a redox-active surrogate of HAs. However, a quinoid analogue could not reflect the adsorption and complexation properties of HA, and little is known about th...
متن کاملReaction Pathways of Clay Minerals in Tropical Soils: Insights from Kaolinite-smectite Synthesis Experiments
Pedogenic smectite from a young (Holocene) tropical soil was reacted in Al-rich solution at 150oC for a range of reaction times (3 to 120 days) in order to study mechanisms and rates associated with the transformation of smectite to kaolinite via interstratified kaolinite-smectite (K-S). As has been observed in tropical soils, the overall reaction rate is logarithmic, with rapid initial transfo...
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ژورنال
عنوان ژورنال: Minerals
سال: 2020
ISSN: 2075-163X
DOI: 10.3390/min10121079