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An investigation into the binding of pentachlorophenol into natural and synthetic organic macromolecules using pyrolysis techniquesCooper, Dunstan W. January 1995 (has links)
No description available.
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Dechlorination of 2,4,6-trichlorophenol on bimetallic Pd/Fe catalyst in a magnetically stabilized fluidized bedWang, Ming-Lei 06 May 1999 (has links)
Graduation date: 1999
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Cometabolic degradation of chlorophenolic compoundsWang, Gongming 30 March 1995 (has links)
Graduation date: 1995
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Aerobic degradation of chlorophenolsWang, Gongming 05 November 1991 (has links)
Chlorinated phenols are toxic compounds and often released into natural
environments from improper disposal or non-point sources. One important factor in
assessing the environmental fate and transport is the rates of microbial degradation in
soils and natural waters. In this study, eight chlorophenols (4-chlorophenol (4-CP),
2,4-dichlorophenol (2,4-DCP), 3,4-dichlorophenol (3,4-DCP), 3,5-dichlorophenol (3,5-
DCP), 2,3,5-trichlorophenol (2,3,5-TCP), 2,4,5-trichlorophenol (2,4,5-TCP), 3,4,5-
trichlorophenol (3,4,5-TCP), and 2,4,6-trichlorophenol (2,4,6-TCP)) were chosen as the
model compounds because they represent the major degradation products for the
anaerobic metabolic products of pentachlorophenol (PCP). Aerobic degradation rates
of all eight compounds were determined under controlled laboratory conditions.
A mixed bacterial culture was seeded from a municipal wastewater treatment
plant and were grown with acetate as a primary substrate and the eight chlorophenols
as secondary substrates. Rates of degradation were measured in a batch reactor with
an initial concentration of acetate of 1000 mg/l and of the individual chlorophenol of
0.1 mg/l.
Rate of acetate and chlorophenols were modelled using a Monod model. The
maximum rate of acetate utilization was zero-order in relation to acetate concentration
and first-order with respect to organism concentration. The rate of chlorophenol
degradation were zero-order in relation to the chlorophenol concentration. The
relative rates of degradation were in general as follows: monochlorophenol >
dichlorophenols > trichlorophenols. / Graduation date: 1992
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Effect of organic matter and contact time on the sorption and bioavailability of chlorophenols /Young, Riki G., January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 115-125). Also available via the Internet.
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Marine and freshwater chlorophenolics-transforming enrichments : performance evaluation and microbial characterization /Anders, Krista Mae. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 223-234).
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Biotransformation of pentachlorophenol by actinomycetes isolated from compostWebb, Martin Darren January 1997 (has links)
No description available.
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Biotreatment of pentachlorophenol using wood rotting funghiUllah, Millie Ann January 2000 (has links)
No description available.
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Dechlorination of p-chlorophenol on palladium based metal support catalystMoore, Kelley A. 01 August 2000 (has links)
Disposal of chlorinated hydrocarbons is a major environmental concern
due to the lack of a satisfactory means of safe remediation at all contaminated
locations. Current technologies rely primarily on incineration, a process that
can lead to dangerous byproducts such as dioxin. If the chlorine substituent
can be removed prior to incineration, or other disposal method, the subsequent
steps of disposal pose less of an environmentally risk. The catalyst developed
in this study is designed to promote the dechlorination reaction.
A methodology for the production of a palladium based metal support
catalyst is presented. This technique allows the palladium catalyst to be
deposited on a copper metal surface. The catalyst is active in the
dechlorination of p-chlorophenol, which is used as model molecule
representing a range of chlorinated phenolic compounds. Hydrogen is used in
the concert with catalyst to affect the dechlorination. Chemical process rates of
0.3-1.0 cm³/g*s are observed. / Graduation date: 2001
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Dechlorination of p-chlorophenol on a palladium based metal support catalyst in a microreactor : experiment and theorySakrittichai, Ploenpun 19 July 2001 (has links)
Graduation date: 2002
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