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Optimization and Analysis of a Slow-Release Permanganate Gel for TCE Plume Treatment in Groundwater

Ogundare, Ojo Oluwaseun
http://orcid.org/0000-0003-2055-2868
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou161797021188483

Abstract Details

2021, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
Trichloroethylene (TCE) is one of the common organic contaminants in groundwater that can cause adverse health effects to humans after exposure. This research aimed to form gels with SRP-G solutions injected into saturated sandy media by examining the diffusion characteristics such as lateral dispersion and MnO4- release from the gel formed in saturated sands. These characteristics would make it possible for the SRP-G solution to target plumes of TCE in groundwater by spreading and extending towards the direction of the TCE plumes and gradually treat the contamination by oxidation over a period. As a result, it is hypothesized that (i) SRP-G solution can provide robust gel in saturated sandy media with the flow if it contains an ideal mixture of colloidal silica and a maximum quantity of KMnO4, (ii) gel formed in saturated sandy media would delay the release of MnO4- therein due to decrease permeability, and (iii) MnO4- released from the SRP-G gel would spread through the saturated sandy media with the flow and slowly release MnO4- that would potentially treat the dissolve TCE plumes. In the column tests, KMnO4 concentrations higher than 28 g/L were used for the SRP-G process. The result suggested that 40 g/L KMnO4 concentration mixed with 20 mL, 10 mL each of 40 wt% and 50 wt% colloidal silica had the longest MnO4- release duration up to 6.1 days suggesting gelation may have occurred in the column. The small flow tank result showed the lateral dispersion and MnO4- release duration of up to 15 days after injection of 40 g/L SRP-G solution mixed with 100 mL, 50 mL each of 40 wt% and 50 wt% colloidal silica. The large flow tank results showed that 40 g/L KMnO4 solution with 200 mL, 100 mL each of 40 wt% and 50 wt% colloidal silica injected into saturated sandy media laterally spread through the sandy media. The extent of spreading varied in three layers and the MnO4- release duration was up to 30 days in the top, middle and bottom layers. Permanganate release duration of up to 15 days in a small flow tank and 30 days in a large flow tank suggested the formation of gels from which MnO4- is slowly released and dispersed and migrate to potentially treat the dissolved TCE plumes.
Eung Lee (Advisor)
100 p.
Geological; Geology
TCE; DNAPLs; SRP-G; KMnO4; Colloidal Silica; Gel; Saturated Sands; Permanganate; Injection

Recommended Citations

Citations

  • Ogundare, O. O. (2021). Optimization and Analysis of a Slow-Release Permanganate Gel for TCE Plume Treatment in Groundwater [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou161797021188483

    APA Style (7th edition)

  • Ogundare, Ojo Oluwaseun. Optimization and Analysis of a Slow-Release Permanganate Gel for TCE Plume Treatment in Groundwater. 2021. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou161797021188483.

    MLA Style (8th edition)

  • Ogundare, Ojo Oluwaseun. "Optimization and Analysis of a Slow-Release Permanganate Gel for TCE Plume Treatment in Groundwater." Master's thesis, Ohio University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou161797021188483

    Chicago Manual of Style (17th edition)

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This open access ETD is published by Ohio University and OhioLINK.