Masters Theses
Title
Direct measurement of VOCs diffusivities in tree tissues: impacts on tree-based phytoremediation
Abstract
"Recent discoveries regarding volatile organic compounds-' (VOCs) fate in phytoremediation have confirmed that diffusion and subsequent volatilization from trees comprise a fundamental transport process. Diffusion of VOCs through woody plant tissues has direct impact on contaminant fate in phytoremediation. Diffusion studies experiments were conducted to investigate the transport rates of VOCs in wood tissues. Compounds investigated were chlorinated compounds such as trichloroethylene (TCE), perchloroethene (PCE), and tetrachloroethane (TeCA), and aromatic hydrocarbons such as benzene, toluene, and methyl tert-butyl ether (MTBE). Direct measurement of diffusion rates was carried out on hybrid poplar tree cores (P delotoides X P nigra, close DN34). Diffusivities were determined by modeling the diffusive transport using one dimensional diffusive flux with appropriate initial and boundary conditions. Diffusivities found to be inversely related to molecular weight of the compounds. The determined diffusivities compare favorably with theory-based predictions, considering wood as a three phase media"--Abstract, page iv.
Advisor(s)
Burken, Joel G. (Joel Gerard)
Committee Member(s)
Frank, Ronald L.
Morrison, Glenn
Department(s)
Civil, Architectural and Environmental Engineering
Degree Name
M.S. in Environmental Engineering
Sponsor(s)
Midwest Hazardous Substance Research Center
National Science Foundation (U.S.)
Publisher
University of Missouri--Rolla
Publication Date
Spring 2006
Pagination
x, 59 pages
Rights
© 2006 Krishna Kumar Baduru, All rights reserved.
Document Type
Thesis - Citation
File Type
text
Language
English
Subject Headings
Partition coefficient (Chemistry)
Phytoremediation
Volatile organic compounds -- Measurement
Xylem
Thesis Number
T 8914
Print OCLC #
79473124
Link to Catalog Record
Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.
http://merlin.lib.umsystem.edu/record=b5766822~S5Recommended Citation
Baduru, Krishna Kumar, "Direct measurement of VOCs diffusivities in tree tissues: impacts on tree-based phytoremediation" (2006). Masters Theses. 3831.
https://scholarsmine.mst.edu/masters_theses/3831
Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.
