Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals

Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals

Bibliographic Details
Main Author: Deeter, Jonathon Michael
Language:English
Published: Wright State University / OhioLINK 2020
Subjects:
Environmental Geology
TCE
iron oxides
radical species
oxygenation
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=wright1598892463038822
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-wright15988924630388222021-08-03T07:16:22Z Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals Deeter, Jonathon Michael Environmental Geology TCE iron oxides radical species oxygenation Fe(II)-containing minerals (often as oxides and sulfides) are commonly present in the shallow subsurface and aquifers. Recent studies have shown that Fe(II) can generate reactive oxygen species upon oxygenation. This bench-scale investigation examined the generation of radical species from [Fe(II)]-containing mineral phases when exposed to oxygen. The Fe(II)-minerals in this study were chemically-reduced hydrous ferric oxide (HFO) and goethite, magnetite, and mackinawite (FeS). This research demonstrated that trichloroethene (TCE) can rapidly degrade by radicals produced from Fe(II)-containing oxides if gaseous oxygen is introduced in reactors. In contrast, there was little or no TCE degradation from oxygenation of freshly-prepared ferrous sulfide (FeS). This suggests radicals were not produced by oxygenation due to the lack of TCE degradation. The result of this study indicated an increase of TCE degradation kinetics with increasing Fe(II) concentrations in chemically-reduced HFO, goethite and magnetite, and has important implications in natural attenuation of TCE at contaminated sites. 2020-09-02 English text Wright State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=wright1598892463038822 http://rave.ohiolink.edu/etdc/view?acc_num=wright1598892463038822 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Environmental Geology
TCE
iron oxides
radical species
oxygenation
spellingShingle Environmental Geology
TCE
iron oxides
radical species
oxygenation
Deeter, Jonathon Michael
Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
author Deeter, Jonathon Michael
author_facet Deeter, Jonathon Michael
author_sort Deeter, Jonathon Michael
title Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
title_short Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
title_full Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
title_fullStr Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
title_full_unstemmed Degradation of Trichloroethene By Radicals Produced By Oxygenation of Various Reduced Iron Minerals
title_sort degradation of trichloroethene by radicals produced by oxygenation of various reduced iron minerals
publisher Wright State University / OhioLINK
publishDate 2020
url http://rave.ohiolink.edu/etdc/view?acc_num=wright1598892463038822
work_keys_str_mv AT deeterjonathonmichael degradationoftrichloroethenebyradicalsproducedbyoxygenationofvariousreducedironminerals
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