00000nam 2200000zi 4500 9.883793 CaOODSP 20241203113654 m o d f cr bn||||||||| 200122e197509##oncad ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En36-522/93-1975E-PDF Tobin, Richard S., author. Testing the biodegradability of nonionic surfactants by the O.E.C.D. dynamic simulation test / Richard S. Tobin and D.H.J. Anthony. [Burlington, Ont.] : Environment Canada, Canada Centre for Inland Waters = Environnement Canada, Centre canadien des eaux intérieures, September, 1975. 1 online resource (21 pages) : figure, chart. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished report] Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 13). "Biodegradability testing of nonionic surfactants was performed by the 0.E.C.D. dynamic simulation (confirmatory) test. A bench-scale activated sludge plant was used with a continuous flow of synthetic sewage containing the surfactants to be tested. Details of operation and modifications to prevent excessive foaming are described. These techniques can be modified for testing the biodegradability and intermediate products of other classes ofcompounds. Results showed the extent of primary biodegradation of the three nonionic surfactants tested followed the order: linear primary alcohol ethoxylate >> nonylphenol ethoxylate > branched alkylphenol ethoxylate"--Abstract, page 1. Surface active agents Biodegradation. Surfactants Biodégradation. Canada. Environment Canada. Canada Centre for Inland Waters. Unpublished report (Canada Centre for Inland Waters) (CaOODSP)9.881827 PDF 1.54 MB https://publications.gc.ca/collections/collection_2020/eccc/en36-522/En36-522-93-1975-eng.pdf