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OLS Field Name OLS Field Data
Main Title Physical and Biological Parameters that Determine the Fate of 'p'-Chlorophenol in Laboratory Test Systems.
Author Pritchard, P. H. ; O'Neill, E. J. ; Spain, C. M. ; Ahearn, D. G. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Technology Applications, Inc., Gulf Breeze, FL. ;Georgia State Univ., Atlanta.
Year Published 1987
Report Number EPA/600/J-87/236;
Stock Number PB88-171053
Additional Subjects Reprints ; Chlorophenol ; Biodegradation ; Parameters
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NTIS  PB88-171053 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 9p
Abstract Shake flask and microcosm studies were conducted to determine the fate of parachlorophenol (p-CP) in water and sediment systems and the role of sediment and nonsediment surfaces in the biodegradation process. Biodegradation of p-CP in estuarine water samples in shake flasks was slow over incubation periods of 300 hours. The addition of detrital sediment resulted in immediate and rapid degradation evidenced by the production of 14CO2 from (14C) p-CP. The addition of sterile sediment, glass beads or sand resulted in an approximately 4 to 6 times faster biodegradation than observed in the water alone. Densities of p-CP degrading bacteria associated with the detrital sediment were 100 times greater than those enumerated in water. Bacteria in the water and associated with the sediment after preexposure of both water and sediment to p-CP demonstrated enhanced biodegradation. In some microcosms, p-CP was degraded completely in the top 1.0 cm of intact sediment beds. Sediment reworking activities by benthic invertebrates from one site were sufficient to mi p-CP deep into the sediment bed faster than biodegradation or molecular diffusion. p-CP was persistant at lower depths of the sediment, possibly a result of reduced oxygen conditions preventing aerobic biodegradation.
Supplementary Notes Pub. in Applied and Environmental Microbiology, v53 n8 p1833-1838 Aug 87. Prepared in cooperation with Technology Applications, Inc., Gulf Breeze, FL., and Georgia State Univ., Atlanta.
NTIS Title Notes Journal article.
Title Annotations Reprint: Physical and Biological Parameters that Determine the Fate of 'p'-Chlorophenol in Laboratory Test Systems.
PUB Date Free Form c1987
Category Codes 57K
NTIS Prices PC A02/MF A01
Primary Description 600/04
Document Type NT
Cataloging Source NTIS/MT
Control Number 812722782
Origin NTIS
Type CAT