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Oxidation of simazine: Biological oxidation of simazine and its chemical oxidation byproducts

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Batch biodegradation studies were conducted to assess the biodegradability of single s-triazines. s-Triazines tested included simazine, a widely used herbicide, and its products resulting from oxidation with ozone, ultraviolet (UV) light, and combined ozone and UV light oxidation. Degradation rates for each s-triazine were calculated as μM N/hr. Rates ranged from 0 to 10.3 μM N/hr. s-Triazine degradation rates were a function of the ring substituents and followed the order of hydroxy ≫ amino ≫ chlorine ≥ ethylamino. Chemical oxidation methods capable of oxidizing the more persistent simazine substituent groups (chlorine and ethylamine) to more easily biodegraded substituents (amine and hydroxy) proved attractive in enhancing the s-triazine mineralization of simazine. When simazine was pretreated with combined ozone and UV, the s-triazine biodegradation rate was increased by an order of magnitude. s-Triazine biodegradation rates also were enhanced with ozone and UV pretreatment but not to the same extent.


Document Type: Research Article


Publication date: May 1, 1995

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  • 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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