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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An investigation into the binding of pentachlorophenol into natural and synthetic organic macromolecules using pyrolysis techniques

Cooper, Dunstan W. January 1995 (has links)
No description available.
2

Dechlorination of 2,4,6-trichlorophenol on bimetallic Pd/Fe catalyst in a magnetically stabilized fluidized bed

Wang, Ming-Lei 06 May 1999 (has links)
Graduation date: 1999
3

Cometabolic degradation of chlorophenolic compounds

Wang, Gongming 30 March 1995 (has links)
Graduation date: 1995
4

Aerobic degradation of chlorophenols

Wang, 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
5

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.
6

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).
7

Biotransformation of pentachlorophenol by actinomycetes isolated from compost

Webb, Martin Darren January 1997 (has links)
No description available.
8

Biotreatment of pentachlorophenol using wood rotting funghi

Ullah, Millie Ann January 2000 (has links)
No description available.
9

Dechlorination of p-chlorophenol on palladium based metal support catalyst

Moore, 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
10

Dechlorination of p-chlorophenol on a palladium based metal support catalyst in a microreactor : experiment and theory

Sakrittichai, Ploenpun 19 July 2001 (has links)
Graduation date: 2002

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