Assessment of Cationic Surfactants Mineralization by Ozonation and Photo‐Fenton Process

Aqueous solutions of two important quaternary ammonium compounds—16‐BAC (benzyl‐dimethyl‐hexadecylammonium‐chloride) and 18‐BAC (benzyl‐dimethyl‐stearylammonium‐chloride)—were treated by the ozonation and photo‐Fenton processes at different ozone doses and hydrogen peroxide concentrations, respectively. During the photo‐Fenton experiments, two different types of lamps were used—a UV mercury vapor medium pressure lamp and a xenon lamp, which simulates solar radiation. The total organic carbon removal was monitored to follow the mineralization of the surfactants. According to the experimental results, after 90 minutes of treatment, the photo‐Fenton process achieved up to 80% of mineralization when the UV lamp was used. The efficiency of the photo‐Fenton with the xenon lamp was lower. The ozonation process reached, at most, 50% mineralization at the used conditions (ozone dose = 7.57 g/h).

[1]  M. Swaminathan,et al.  Enhanced heterogeneous ferrioxalate photo-fenton degradation of reactive orange 4 by solar light , 2005 .

[2]  Sixto Malato,et al.  Optimizing the solar photo-Fenton process in the treatment of contaminated water. Determination of intrinsic kinetic constants for scale-up , 2005 .

[3]  A. M. Amat,et al.  Photo-Fenton reaction for the abatement of commercial surfactants in a solar pilot plant , 2004 .

[4]  B. Keskinler,et al.  Removal of surfactants by powdered activated carbon and microfiltration. , 2004, Water research.

[5]  S. Esplugas,et al.  Mineralization of phenol in aqueous solution by ozonation using iron or copper salts and light , 2003 .

[6]  T. Albanis,et al.  Photocatalytic transformation of pesticides in aqueous titanium dioxide suspensions using artificial and solar light: intermediates and degradation pathways , 2003 .

[7]  J. Lombraña,et al.  Ultraviolet-H2O2 oxidation of surfactants , 2003 .

[8]  G. Bereket,et al.  Inhibition of the corrosion of low carbon steel in acidic solution by selected quaternary ammonium compounds , 2002 .

[9]  C. Adams,et al.  Effects of UV/H2O2 preoxidation on the aerobic biodegradability of quaternary amine surfactants , 2000 .

[10]  E. Campos,et al.  Effect of the alkyl chain length on the anaerobic biodegradability and toxicity of quaternary ammonium based surfactants. , 1999, Chemosphere.

[11]  F. Schröder,et al.  Effect of waste water treatment technology on the elimination of anionic surfactants , 1999 .

[12]  S. Polesello,et al.  Reactivity of two models of non-ionic surfactants with ozone , 1997 .

[13]  J. Pignatello,et al.  Role of Quinone Intermediates as Electron Shuttles in Fenton and Photoassisted Fenton Oxidations of Aromatic Compounds , 1997 .

[14]  Jincai Zhao,et al.  Photodegradation of surfactants XIV. Formation of NG4+ and NO3− ions for the photocatalyzed mineralization of nitrogendashcontaining cationic, nondashionic and amphoteric surfactants , 1995 .

[15]  Jincai Zhao,et al.  Photodegradation of surfactants: Part vi complete photocatalytic degradation of anionic, cationic and nonionic surfactants in aqueous semiconductor dispersions , 1990 .

[16]  Frederick W. Pontius,et al.  Complying With the New Drinking Water Quality Regulations , 1990 .

[17]  Robert S. Boethling,et al.  Environmental fate and toxicity in wastewater treatment of quaternary ammonium surfactants , 1984 .

[18]  Johannes Staehelin,et al.  Decomposition of ozone in water: rate of initiation by hydroxide ions and hydrogen peroxide , 1982 .