Aerobic degradation of chlorophenols Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/ks65hj14q

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • 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.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-03-11T16:46:38Z (GMT) No. of bitstreams: 1 WangGongming1992.pdf: 1954613 bytes, checksum: c07b1e42b1be1c2daa317b9a84d6d97f (MD5)
  • description.provenance : Made available in DSpace on 2013-03-11T16:46:38Z (GMT). No. of bitstreams: 1 WangGongming1992.pdf: 1954613 bytes, checksum: c07b1e42b1be1c2daa317b9a84d6d97f (MD5) Previous issue date: 1991-11-05
  • description.provenance : Submitted by Kirsten Clark (kcscannerosu@gmail.com) on 2013-03-07T18:57:29Z No. of bitstreams: 1 WangGongming1992.pdf: 1954613 bytes, checksum: c07b1e42b1be1c2daa317b9a84d6d97f (MD5)
  • Text slanted in original. Best scan available.
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-03-07T22:57:09Z (GMT) No. of bitstreams: 1 WangGongming1992.pdf: 1954613 bytes, checksum: c07b1e42b1be1c2daa317b9a84d6d97f (MD5)

Relationships

In Administrative Set:
Last modified: 10/26/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items