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Burdsall_dissertation_WSU_2018.pdf (6.19 MB)

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Abiotic Reduction Transformations of Recalcitrant Chlorinated Methanes, Chlorinated Ethanes, and 2,4-Dinitroanisole By Reduced Iron Oxides at Bench-Scale

Burdsall, Adam C.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1527263758253055

Abstract Details

2018, Doctor of Philosophy (PhD), Wright State University, Environmental Sciences PhD.
Sites contaminated with chlorinated hydrocarbons are frequent and widespread, and with the rising use of insensitive high explosive (IHE) compounds, more widespread contamination is inevitable. In the cases of both classes of organic contaminants, natural attenuation is a critical component of our understanding of the environmental fate of these compounds. This dissertation is intended to expand the knowledge of potential abiotic natural attenuation mechanisms and, in the case of the study of chlorinated hydrocarbons, to examine degradation under variable pH conditions in the hopes of helping to develop minimally invasive remediation techniques. The results indicated that precipitated hydrolyzed Fe(II) species are more reactive toward chlorinated hydrocarbons than precipitated magnetite particles alone. The combination of precipitated magnetite with Fe(II) species at high pH were found to have a slightly slower reaction than Fe(II) species but produced more reduced byproducts than either Fe(II) species or magnetite particles alone. Until this study, reduction of 2,4-dinitroanisole (DNAN) had not been studied with naturally occurring iron oxide minerals. Fe(II) added to hydrous ferric oxide and goethite at neutral to basic pH facilitated nitroreduction of insensitive explosive component, 2,4-dinitroanisole (DNAN) to various nitroaniline byproducts. Magnetite was found to be a stronger reductant for DNAN, degrading it with and without Fe(II) amendments at pH 6 to 10. The study with magnetite and DNAN demonstrated that structural Fe(II) was more reactive than adsorbed Fe(II).
Abinash Agrawal, Ph.D. (Committee Chair)
Doyle Watts, Ph.D. (Committee Member)
Ioana Sizemore, Ph.D. (Committee Member)
Steven Higgins, Ph.D. (Committee Member)
Marc Mills, Ph.D. (Committee Member)
Willie Harper, Jr., Ph.D. (Committee Member)
394 p.
Environmental Science; Geochemistry
Chlorinated pollutants; Chlorinated methanes; Insensitive munitions; Organic pollutants; Dinitroanisole; nitrotriazolone; Nitroguanidine; explosives; Iron Oxides; magnetite

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Citations

  • Burdsall, A. C. (2018). Abiotic Reduction Transformations of Recalcitrant Chlorinated Methanes, Chlorinated Ethanes, and 2,4-Dinitroanisole By Reduced Iron Oxides at Bench-Scale [Doctoral dissertation, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1527263758253055

    APA Style (7th edition)

  • Burdsall, Adam. Abiotic Reduction Transformations of Recalcitrant Chlorinated Methanes, Chlorinated Ethanes, and 2,4-Dinitroanisole By Reduced Iron Oxides at Bench-Scale. 2018. Wright State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1527263758253055.

    MLA Style (8th edition)

  • Burdsall, Adam. "Abiotic Reduction Transformations of Recalcitrant Chlorinated Methanes, Chlorinated Ethanes, and 2,4-Dinitroanisole By Reduced Iron Oxides at Bench-Scale." Doctoral dissertation, Wright State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1527263758253055

    Chicago Manual of Style (17th edition)

wright1527263758253055
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This open access ETD is published by Wright State University and OhioLINK.