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Biodegradation of nonionic ethoxylates

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Journal of the American Oil Chemists’ Society

Abstract

The biodegradation of alcohol ethoxylates (AE) and alkylphenol ethoxylates (APE) is reviewed. Biodegradation test methods, ranging from laboratory tests to full-scale waste treatment plant studies are described for these surfactants. A comparison is made between primary and ultimate biodegradability criteria and the limitations of the various analytical methods used in these determinations are discussed. The most recently published data suggest sewage bacteria degrade AE by a mechanism which is different from that by which APE degrades. The use of radiolabeled surfactants to elicit more detailed information about the biodegradation mechanisms of AE is described. The role of biodegradation on the impact of surfactants released to the environment is assessed, and future environmental concerns for nonionics are considered.

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Authors and Affiliations

  1. Westhollow Research Center, Shell Development Co., PO Box 1380, 77001, Houston, TX

    L. Kravetz

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  1. L. Kravetz
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Kravetz, L. Biodegradation of nonionic ethoxylates. J Am Oil Chem Soc 58, 58A–65A (1981). https://doi.org/10.1007/BF02666075

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  • DOI: https://doi.org/10.1007/BF02666075

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