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A QSBR development procedure for aromatic xenobiotic degradation by unacclimated bacteria

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ABSTRACT:

The relationship between chemical structure and the comparative rate of biodegradation (defined here as the biodegradation index) by unacclimated activated sludge has been studied. The findings of one model illustrate that the relationship between structure and biodegradability for a homologous series of aromatic compounds may be easily developed using techniques drawn from medical and pharmacological sciences, in this case, Hammett's constants. This is true when the biodegradation pathway is known. However, such a model is not broadly applicable to a diverse group of substances where such pathway information is not available. A second model was developed using a newer technique—molecular connectivity indices—which does not require pathway information. The second model was calibrated with the data employed in the first model. This model did not contain specific pathway or directional information, but successfully predicted the rates at about the same confidence level as the first.
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Keywords: QSBR; structure-biodegradability; unacclimated activated sludge

Document Type: Research Article

Publication date: 1993-09-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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