Add my thesis
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content/academia/thesis.md
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---
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title: "Polyoxometalate Incorporation and Effects on Proton Transport in Hydrogel Polymers"
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date: 2020-08-07
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cardImage: library
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draft: false
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featured: true
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keywords:
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- bioremediation
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- polyoxometalate
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- hydrogel polymers
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- proton transport
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- chemical engineering
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type: "Thesis"
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authors:
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- Christensen, Thomas Allen, II
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link: 'https://www.proquest.com/dissertations-theses/polyoxometalate-incorporation-effects-on-proton/docview/2502214356/se-2'
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journal: "University of Idaho"
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location: "Moscow, Idaho"
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---
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Polyoxometalate clusters embedded into hydrogel biobeads may be able to solve
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the challenges posed by free proton generation during remediation of
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trichloroethylene by acting as buffers and reducing protons to hydrogen gas. In
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this thesis, the challenges posed by systems that contain both diffusion and
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reaction processes for protons are considered mathematically, and a computer
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simulation to was developed to prove the relationship between diaphragm cell lag
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period and reactive capabilities of membranes. Two polyoxometalate compounds,
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sodium decavanadate and alumina sulfate, were successfully incorporated into a
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poly(vinyl alcohol) hydrogel membrane, and the diffusivity changes associated
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with each compound was determined. It was found that the diffusivity of protons
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through an unmodified 10% w/v poly(vinyl alcohol) membrane was 1.76 ×
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10{{< sup -5 >}} cm{{< sup 2 >}} s{{< sup -1 >}}, the diffusivity through a
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10%/2% w/w/v poly(vinyl alcohol)/sodium decavanadate membrane was 3.10 ×
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10{{< sup -6 >}} cm{{< sup 2 >}} s{{< sup -1 >}}, and the diffusivity through
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a 10%/2% w/w/v poly(vinyl alcohol)/alumina sulfate membrane was 3.32 ×
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10{{< sup -7 >}} cm{{< sup 2 >}} s{{< sup -1 >}}. Through analysis of the
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diaphragm cell lag period, it was found the incorporation of sodium
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decavanadate did not increase the reactivity of a poly(vinyl alcohol)
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hydrogel, and incorporation of alumina sulfate lowered the reactivity. These
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results indicate that polyoxometalate integration into hydrogel membranes is
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feasible, but does not provide any advantage to a bioremediation scenario.
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