Barrett

Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.

Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.

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Model Membrane System to Determine Water Permeability of Linde Type A Zeolite

Description
In this research, construction of a model membrane system using Polyvinylidene Chloride-Co Acrylonitrile and Linde Type A zeolites is described. The systems aims to separate out flow through zeolite pores and flow through interfaces between zeolites and polymers through the use of pore filled and pore open zeolites. Permeation tests…

In this research, construction of a model membrane system using Polyvinylidene Chloride-Co Acrylonitrile and Linde Type A zeolites is described. The systems aims to separate out flow through zeolite pores and flow through interfaces between zeolites and polymers through the use of pore filled and pore open zeolites. Permeation tests and salt rejection tests were performed, and the data analyzed to yield approximation of separated flow through zeolites and interfaces. This work concludes the more work is required to bring the model system into a functioning state. New polymer selections and new techniques to produce the membrane system are described for future work.
ContributorsShabilla, Andrew Daniel (Author) / Lind, Mary Laura (Thesis director) / Lin, Jerry (Committee member) / Barrett, The Honors College (Contributor) / Chemical Engineering Program (Contributor)
Created2014-05
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Characterizing the Effects of Various Acids on Zeolites

Description
This project is part of a larger project involving making membranes for the separation of potable water from urine solutions for applications in space travel. This project deals specifically with testing LTA nanozeolites that will be used in the membrane under a variety of acidic conditions, specifically in solutions of…

This project is part of a larger project involving making membranes for the separation of potable water from urine solutions for applications in space travel. This project deals specifically with testing LTA nanozeolites that will be used in the membrane under a variety of acidic conditions, specifically in solutions of sulfuric acid, chromium trioxide, and potassium phosphate of pHs ranging from .5 to 5, in order to investigate the effects of pH, acid type, and time. They were analyzed using SEM, FTIR, and XRD, in order to analyze how much the zeolite was degraded under the conditions of each solution. It was determined that, for high pH values (4-5), potassium phosphate had the strongest effect, as it degraded the zeolite to the point of destroying the crystal structure completely. Because of the solubility limit of potassium phosphate in water, it could not be analyzed at low pH, so only sulfuric acid and chromium trioxide were analyzed at low pH (.5-3). They both had severe effects, sulfuric acid being slightly more severe, with both of them completely dissolving the zeolite at pH values of 1 and lower. Decreasing pH increased degradation for all of the acids, with pH values above 2 for sulfuric acid and chromium trioxide showing only minor degradation, and pH 5 potassium phosphate showing only minor degradation.
ContributorsWaller, Aaron Christopher (Author) / Lind, Mary Laura (Thesis director) / Dai, Lenore (Committee member) / Lin, Jerry (Committee member) / Barrett, The Honors College (Contributor)
Created2013-05