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  • Title: [The transformation of nonylphenol ethoxylates in sewage treatment].
    Author: Ma X, Shao B, Hu J, Yang M.
    Journal: Huan Jing Ke Xue; 2002 Sep; 23(5):80-3. PubMed ID: 12533932.
    Abstract:
    The concentrations of individual NPnEO (n > 2) were separated and analyzed by normal phase liquid chromatograph-mass spectrometry (NPLC-MS), and those of NP, NP1EO and NP2EO were determined by GC-MS. NP and NPnEO (n = 1-23) were found in the influent water, and the concentration of total NPnEO was 174 nmol/L. Of NPnEO, the abundance of NP2EO (89.6 nmol/L) was the highest, and next was NP (42.2 nmol/L) followed by NP1EO (12.2 nmol/L). 71% NP and NPnEO were removed by sewage treatment process and the adsorption on sludge contributed to the removal for these compounds. It was found that the adsorption of NPnEO on sludge followed the Dubinin-Astakhov model, assuming each NPEO were with similar adsorption potential.
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