Effects of p-cresol and chlorophenols on pentachlorophenol biodegradation

Journal Article · Sun Aug 20 04:00:00 EDT 1995 · Biotechnology and Bioengineering

DOI:https://doi.org/10.1002/bit.260470408· OSTI ID:103929

Gu, Y; Korus, R A ^[1]

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1. Univ. of Idaho, Moscow, ID (United States). Dept. of Chemical Engineering

The effects of three aromatic compounds, p-cresol, 2,4-dichlorophenol (DCP), and 2,4,6-trichlorophenol (TCP), on cell growth and pentachlorophenol (PCP) degradation by a Flavobacterium species were investigated. While p-cresol was not degraded by this bacterium, DCP and TCP were simultaneously degraded with PCSP. Both DCP and TCP lowered cell growth and PCP degradation rate. Cell growth was modeled by cell death, because p-cresol, DCP, and TCP were toxic to the organism. A new model was used to predict cell death rate in a mixture of two toxic compounds from the cell death kinetics for each individual compound. PCP degradation rates were modeled by conventional inhibition models, but only over a small concentration range for the secondary toxic compound. However, a new empirical model described PCP degradation over a wider concentration range of the secondary toxic compound.

• Sponsoring Organization: USDOE
• OSTI ID: 103929
• Journal Information: Biotechnology and Bioengineering, Journal Name: Biotechnology and Bioengineering Journal Issue: 4 Vol. 47; ISSN BIBIAU; ISSN 0006-3592
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BACTERIA
BIODEGRADATION
CHLORINATED AROMATIC HYDROCARBONS
CRESOLS
GROWTH
MATHEMATICAL MODELS
TOXICITY