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Nonylphenol is the primary breakdown intermediate formed during biodegradation of nonylphenol ethoxylates. Research indicates that nonylphenol has been found to be toxic to aquatic organisms and has been suspected of being xenoestrogenic. In addition to other estrogenic effects, nonylphenol is suspected of contributing to the feminization of male fish in sewage outflows. This paper focuses on determining biodegradation rates of nonylphenol. Conventional models such as the Monod and Haldane were applied to analuze respirometric data obtained for nonylphenol biodegradation. Biodegradation experiments were conducted at different nonylphenol concentrations. Results indicate that nonylphenol is biodegradable and the biodegradation can be modeled using Haldane kinetics.

Document Type: Research Article


Publication date: 2002-01-01

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