Reactive barrier membranes with environmental applications

Loading...

View/Download File

Warta_umn_0130E_11726.pdf (971.84 KB)

Persistent link to this item

https://hdl.handle.net/11299/144343

Statistics

View Statistics

Journal Title

Journal ISSN

Volume Title

Title

Reactive barrier membranes with environmental applications

Authors

Warta, Andrew M.

Published Date

2010-12

Publisher

Type

Thesis or Dissertation

Abstract

Addition of reactive groups to a barrier membrane can increase lag time for specific contaminants. Loading polyvinylalcohol (PVA) with a cesium-selective crystalline silicotitanate (CST) is shown to greatly increase lag time for cesium ion when upstream concentration is constant. Experiments are reproducible. Results can be generalized to real-world environmental applications. Loading powdered activated carbon (PAC) to PVA is shown to greatly increase lag time for 1,2,4-trichlorobenzene (1,2,4-TCB), a model for polychlorinated biphenyls (PCBs). Flow-through diffusion cell tests are performed challenging a PAC loaded barrier membranes with varying upstream concentrations. Desorption from a loaded PAC barrier membrane is shown to depend on the square root of time. Theoretical models are derived for four cases where a reactive volume degrading a contaminant in series with a sorbing, carbon-containing volume. Reactions following first-order kinetics allow more contaminant to escape from the modeled systems than reactions following zero-order kinetics. Results are summarized and potential future work is suggested.

Keywords

Cesium (Cs)

Crystalline Silicotitanate (CST)

Polychlorinated Biphenyls (PCB)

Polyvinylalcohol (PVA)

Powdered Activated Carbon (PAC)

Reactive barrier membranes

Description

University of Minnesota Ph.D. dissertation. December 2010. Major: Chemical Engineering. Advisors;Edward L. Cussler Jr., PhD., William A. Arnold, Ph.D., 1 computer file (PDF); viii, 166 pages, appendices A-D.

Related to

Replaces

License

Collections

Dissertations

Series/Report Number

Funding information

Isbn identifier

Doi identifier

Previously Published Citation

Suggested citation

Warta, Andrew M.. (2010). Reactive barrier membranes with environmental applications. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/144343.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.