NON-IONIC SURFACTANTS INTERACTIONS WITH OZONE.

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Narkis, Nava
Ben-David, Bella
Schneider-Rotel, Malka
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OZONE;
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Batch experiments were carried out to investigate the efficiency of ozone treatment on the removal of non-ionic surfactants from aqueous solutions. A series of nonyl phenol ethoxylates, with n equals 4 to 30 ethylene oxide groups, dinonyl phenol ethoxylate and polyethylene glycol were studied. The oxidation mechanism by ozone of non-ionic surfactant molecules is explained as mainly polyethoxylate chains cleavage, and to a smaller extent oxidation of the aromatic ring. Ozone treatment can enhance biodegradation of these surfactants.
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页码:200 / 205
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