Reduction of nitroaromatic compounds by iron(ii) reduced clay minerals
نویسندگان
چکیده
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 through all of my difficulties and accomplishments in both my research and academics. I would like to also thank Dr. Anke Neumann for educating me on laboratory practices and knowledge of clay minerals. I would like to thank Dr. Anke Neumann again for also providing valuable guidance and support for my research. A well-deserved thank you to the entire Scherer group for their constructive opinions and feedback as well as providing an exciting and productive environment to in which learn from. part of my thesis committee. A second thanks to Drew for also advising on sample collection and Mössbauer data fitting. Thanks to Jon Durst for providing lessons on operation, trouble shooting, and maintenance of laboratory machinery. A special thanks to my parents who were always supportive, provided encouragement, and were great listeners to all of my practice presentations over the years. access to and lessons on TEM. Also thanks to Matthew Wortel and Dr. David Peate for providing guidance and access to and size fractionation equipment for clay minerals.
منابع مشابه
Linear free energy relationships for the biotic and abiotic reduction of nitroaromatic compounds.
Nitroaromatic compounds (NACs) are ubiquitous environmental contaminants that are susceptible to biological and abiotic reduction. Prior works have found that for the abiotic reduction of NACs, the logarithm of the NACs’ rate constants correlate with one-electron reduction potential values of the NACs (EH,NAC1) according to linear free energy relationships (LFERs). Here, we extend the applicati...
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Interfacial electron transfer has been shown to occur between sorbed Fe(II) and structural Fe(III) in Fe oxides, but it is unknown whether a similar reaction occurs between sorbed Fe(II) and Fe(III)-bearing clay minerals. Here, we used the isotopic specificity of (57)Fe Mössbauer spectroscopy to demonstrate electron transfer between sorbed Fe(II) and structural Fe(III) in an Fe-bearing smectite...
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Nitroaromatic compounds are produced and used in large quantities worldwide and are frequently detected contaminants in the environment. Sorption is one of the fundamental processes controlling the transport and availability of nitroaromatics, but previous studies have focused mainly on sorption to model clay minerals, whereas little attention has been paid to the sorptive interactions with nat...
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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...
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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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