“Woah! It's like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Degradation of Two Commercial Anionic Surfactants by Means of Ozone and/or UV Irradiation

Degradation of Two Commercial Anionic Surfactants by Means of Ozone and/or UV Irradiation Two commercial anionic surfactants, namely sodium dodecylsulfate (SDS) and tetraethylammonium dodecylbenzenesulfonate (DBS), have been submitted to different oxidizing treatments: ozone, ozone at basic pH, sonication, ozone/sonication, ozone/hydrogen peroxide, UV, and UV/ozone. The best results were achieved with O 3 /UV and O 3 at basic pH where hydroxyl radical is generated; under these conditions, nearly complete elimination of the surfactant was achieved after 10 min of treatment (compared with 50% elimination of DBS and 20% of SDS in ozonation at acidic pH, where molecular O 3 is the actual oxidizing agent). The total organic carbon decrease was only moderate and never exceeded 50%. On the other hand, surface tension increased to reach values close to that of distilled water (72 mN/m) in only 15 min of treatment, indicating that ozone is very useful to destroy the species having active surface properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Engineering Science Mary Ann Liebert

Degradation of Two Commercial Anionic Surfactants by Means of Ozone and/or UV Irradiation

Abstract

Two commercial anionic surfactants, namely sodium dodecylsulfate (SDS) and tetraethylammonium dodecylbenzenesulfonate (DBS), have been submitted to different oxidizing treatments: ozone, ozone at basic pH, sonication, ozone/sonication, ozone/hydrogen peroxide, UV, and UV/ozone. The best results were achieved with O 3 /UV and O 3 at basic pH where hydroxyl radical is generated; under these conditions, nearly complete elimination of the surfactant was achieved after 10 min of treatment (compared with 50% elimination of DBS and 20% of SDS in ozonation at acidic pH, where molecular O 3 is the actual oxidizing agent). The total organic carbon decrease was only moderate and never exceeded 50%. On the other hand, surface tension increased to reach values close to that of distilled water (72 mN/m) in only 15 min of treatment, indicating that ozone is very useful to destroy the species having active surface properties.
Loading next page...
 
/lp/mary-ann-liebert/degradation-of-two-commercial-anionic-surfactants-by-means-of-ozone-Gyn6x9zt1f

Sorry, we don't have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now: