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Theses/Dissertations

Chemical engineering

Retrospective Theses and Dissertations

Civil and Environmental Engineering

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Full-Text Articles in Engineering

Tnt Phytotransformation In Native And Genetically Modified Species: Significance Of Aromatic Hydroxylamines In The Metabolic Pathway , Murali Subramanian Jan 2004

Tnt Phytotransformation In Native And Genetically Modified Species: Significance Of Aromatic Hydroxylamines In The Metabolic Pathway , Murali Subramanian

Retrospective Theses and Dissertations

The presence and role of hydroxylamines in TNT transformation were ascertained in two axenic (microbe-free) hydroponic plant systems through high TNT feeding experiments and the use of different analytical detection schemes. Hydroxylamines were formed within 10 hours of TNT addition, and usually disappeared within 20 hours, displaying a high turnover rate due to their instability and high reactivity. Hydroxylamines were shown to add biomolecules to their functional group and thereby directly form conjugates. The 4-isomer of the hydroxylamine was detected in very high levels (up to 30% of initial TNT added) in a transgenic tobacco system that had a bacterial ...


Study Of Transport And Dissolution Of A Nonaqueous Phase Liquid In Porous Media: Effects Of Low-Frequency Pulsations And Surfactants , Mirrya Mosier Fontenot Jan 2001

Study Of Transport And Dissolution Of A Nonaqueous Phase Liquid In Porous Media: Effects Of Low-Frequency Pulsations And Surfactants , Mirrya Mosier Fontenot

Retrospective Theses and Dissertations

The transport and dissolution of residual non aqueous phase liquids (NAPLs) trapped in water saturated porous media is a problem pertinent to both environmental and petrochemical industries. In this work we have quantitatively examined the complete dissolution of residual entrapped NAPL at the pore-scale in three dimensions using refractive index matching techniques along with planar laser induced fluorescence. The results yielded pore-scale information regarding ganglia volume, surface area, and position over time at various Capillary numbers. We found that with increasing Capillary numbers, the time for total dissolution decreased. In addition, it appears that large ganglia exhibit fractal area to ...


A Mathematical Model Of The Chemistry Of The Dump Leaching Of Chalcopyrite, Knona Constance Liddell Jan 1979

A Mathematical Model Of The Chemistry Of The Dump Leaching Of Chalcopyrite, Knona Constance Liddell

Retrospective Theses and Dissertations

No abstract provided.