American Journal of Environmental Protection

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Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions

Received: 23 January 2014    Accepted:     Published: 20 February 2014
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Abstract

The increasing utilization of surfactants generates a great amount of wastes. Surfactants and their more toxic degradation by-products in the environment affect the biota greatly. In particular, the low biodegradation of nonionic surfactants requires efficient oxidation treatments. In addition, the extracted contaminants by high concentrations of non-ionic surfactants in soil remediation may be completely treated using advanced oxidation process and thus the degradation of non-ionic surfactants needs to be checked in this case. The photocatalytic degradation of Triton X-100, a non-ionic surfactant, in aqueous titania suspensions was investigated as a function of catalyst dosage, pH, addition of hydrogen peroxide, potassium persulfate, and Tert-butyl alcohol. For the treatment of 20 mg/L Triton X-100 solutions, the optimum catalyst dosage and pH were determined to be 1 g/L and 6, respectively. The degradation efficiency of Triton X-100 by potassium persulfate was higher than that by hydrogen peroxide when the same mol of oxidants were used. Tert-butyl alcohol can strongly inhibit the photocatalytic oxidation reactions of Triton X-100. The degradation rates as a function of initial surfactant concentrations were interpreted by using a Langmuir-Hinshelwood model. With 0.2 g/L titania or even an additional 0.1 g/L hydrogen peroxide to completely degrade 1 mg/L phenanthrene in a 2 g/L Triton X-100 solution within 30 min, in this case the degradation efficiency of Triton X-100 was less than 5%. This proved that the strategy that surfactants were used as solubilizing agents for the removal of contaminants from soils followed by heterogeneous photocatalytic degradation was feasible.Within 120 min, 2 g/L of Triton X-100 can be degraded up to 67% by the addition of both 1 g/L titania and 1 g/L hydrogen peroxide. Under the right conditions, Triton X-100 can be completely degraded.

DOI 10.11648/j.ajep.20140301.14
Published in American Journal of Environmental Protection (Volume 3, Issue 1, February 2014)
Page(s) 28-35
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Triton X-100, Photocatalytic Degradation, Titania, Kinetics

References
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Author Information
  • School of Chemistry and Environment, South China Normal University, Guangzhou, P.R.China

  • Library of South China Normal University, Guangzhou, P.R.China

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    Yanlin Zhang, Yufang Wan. (2014). Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions. American Journal of Environmental Protection, 3(1), 28-35. https://doi.org/10.11648/j.ajep.20140301.14

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    Yanlin Zhang; Yufang Wan. Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions. Am. J. Environ. Prot. 2014, 3(1), 28-35. doi: 10.11648/j.ajep.20140301.14

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    AMA Style

    Yanlin Zhang, Yufang Wan. Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions. Am J Environ Prot. 2014;3(1):28-35. doi: 10.11648/j.ajep.20140301.14

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  • @article{10.11648/j.ajep.20140301.14,
      author = {Yanlin Zhang and Yufang Wan},
      title = {Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions},
      journal = {American Journal of Environmental Protection},
      volume = {3},
      number = {1},
      pages = {28-35},
      doi = {10.11648/j.ajep.20140301.14},
      url = {https://doi.org/10.11648/j.ajep.20140301.14},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ajep.20140301.14},
      abstract = {The increasing utilization of surfactants generates a great amount of wastes. Surfactants and their more toxic degradation by-products in the environment affect the biota greatly. In particular, the low biodegradation of nonionic surfactants requires efficient oxidation treatments. In addition, the extracted contaminants by high concentrations of non-ionic surfactants in soil remediation may be completely treated using advanced oxidation process and thus the degradation of non-ionic surfactants needs to be checked in this case. The photocatalytic degradation of Triton X-100, a non-ionic surfactant, in aqueous titania suspensions was investigated as a function of catalyst dosage, pH, addition of hydrogen peroxide, potassium persulfate, and Tert-butyl alcohol. For the treatment of 20 mg/L Triton X-100 solutions, the optimum catalyst dosage and pH were determined to be 1 g/L and 6, respectively. The degradation efficiency of Triton X-100 by potassium persulfate was higher than that by hydrogen peroxide when the same mol of oxidants were used. Tert-butyl alcohol can strongly inhibit the photocatalytic oxidation reactions of Triton X-100. The degradation rates as a function of initial surfactant concentrations were interpreted by using a Langmuir-Hinshelwood model. With 0.2 g/L titania or even an additional 0.1 g/L hydrogen peroxide to completely degrade 1 mg/L phenanthrene in a 2 g/L Triton X-100 solution within 30 min, in this case the degradation efficiency of Triton X-100 was less than 5%. This proved that the strategy that surfactants were used as solubilizing agents for the removal of contaminants from soils followed by heterogeneous photocatalytic degradation was feasible.Within 120 min, 2 g/L of Triton X-100 can be degraded up to 67% by the addition of both 1 g/L titania and 1 g/L hydrogen peroxide. Under the right conditions, Triton X-100 can be completely degraded.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions
    AU  - Yanlin Zhang
    AU  - Yufang Wan
    Y1  - 2014/02/20
    PY  - 2014
    N1  - https://doi.org/10.11648/j.ajep.20140301.14
    DO  - 10.11648/j.ajep.20140301.14
    T2  - American Journal of Environmental Protection
    JF  - American Journal of Environmental Protection
    JO  - American Journal of Environmental Protection
    SP  - 28
    EP  - 35
    PB  - Science Publishing Group
    SN  - 2328-5699
    UR  - https://doi.org/10.11648/j.ajep.20140301.14
    AB  - The increasing utilization of surfactants generates a great amount of wastes. Surfactants and their more toxic degradation by-products in the environment affect the biota greatly. In particular, the low biodegradation of nonionic surfactants requires efficient oxidation treatments. In addition, the extracted contaminants by high concentrations of non-ionic surfactants in soil remediation may be completely treated using advanced oxidation process and thus the degradation of non-ionic surfactants needs to be checked in this case. The photocatalytic degradation of Triton X-100, a non-ionic surfactant, in aqueous titania suspensions was investigated as a function of catalyst dosage, pH, addition of hydrogen peroxide, potassium persulfate, and Tert-butyl alcohol. For the treatment of 20 mg/L Triton X-100 solutions, the optimum catalyst dosage and pH were determined to be 1 g/L and 6, respectively. The degradation efficiency of Triton X-100 by potassium persulfate was higher than that by hydrogen peroxide when the same mol of oxidants were used. Tert-butyl alcohol can strongly inhibit the photocatalytic oxidation reactions of Triton X-100. The degradation rates as a function of initial surfactant concentrations were interpreted by using a Langmuir-Hinshelwood model. With 0.2 g/L titania or even an additional 0.1 g/L hydrogen peroxide to completely degrade 1 mg/L phenanthrene in a 2 g/L Triton X-100 solution within 30 min, in this case the degradation efficiency of Triton X-100 was less than 5%. This proved that the strategy that surfactants were used as solubilizing agents for the removal of contaminants from soils followed by heterogeneous photocatalytic degradation was feasible.Within 120 min, 2 g/L of Triton X-100 can be degraded up to 67% by the addition of both 1 g/L titania and 1 g/L hydrogen peroxide. Under the right conditions, Triton X-100 can be completely degraded.
    VL  - 3
    IS  - 1
    ER  - 

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