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首页> 外文期刊>Journal of Environmental Science and Health >Photo-Fenton degradation of non-ionic surfactant and its mixture with cationic or anionic surfactant
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Photo-Fenton degradation of non-ionic surfactant and its mixture with cationic or anionic surfactant

机译：非离子表面活性剂及其与阳离子或阴离子表面活性剂的混合物的光芬顿降解

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摘要

The oxidative degradation of non-ionic surfactants by the photo-Fenton process has been examined. The photo-Fenton degradation kinetics of mixtures of non-ionic surfactant and other type surfactants has been also investigated since mixtures of non-ionic and ionic surfactants are commonly used to utilize their synergistic effects in many practices. Effects of operating parameters such as dosages of Fenton reagents (iron and hydrogen peroxide) and UV light intensity on the degradation of commercial non-ionic surfactant Sannonic SS-90 (polyoxyethylene alkyl ether) were studied. Although the dosages of the Fenton reagents increased the degradation rate up to the optimum dosages, further addition of the reagents could not enhance the degradation rate. Excess dosages of Fe and H_2O_2 caused excess OH radicals which could be a scavenger of OH radicals and as a result could not enhance the degradation of the surfactant. The increase in UV light intensity resulting in the faster photo-Fenton process or the enhancement of OH radical formation rate led to the increase in degradation rate of non-ionic surfactant. Although the existence of the anionic surfactant (sodium dodecylbenzene sulphonate) would inhibit the degradation of the non-ionic surfactant due to the formation of complex with Fe ion, the existence of cationic surfactant (dodecyltrimethyl ammonium chloride) affected insignificantly the photo-Fenton degradation process of the non-ionic surfactant.
机译：已经研究了通过光芬顿法对非离子表面活性剂的氧化降解。还已经研究了非离子表面活性剂和其他类型表面活性剂的混合物的光芬顿降解动力学，因为非离子表面活性剂和离子表面活性剂的混合物在许多实践中通常用于利用它们的协同作用。研究了Fenton试剂（铁和过氧化氢）的剂量以及紫外线强度等操作参数对商用非离子表面活性剂Sannonic SS-90（聚氧乙烯烷基醚）降解的影响。尽管Fenton试剂的剂量将降解速率提高到最佳剂量，但进一步添加试剂不能提高降解速率。 Fe和H_2O_2的过量使用会导致过量的OH自由基，这可能是OH自由基的清除剂，因此不能促进表面活性剂的降解。紫外线强度的增加导致更快的光芬顿过程或OH自由基形成速率的提高导致非离子表面活性剂降解速率的增加。尽管阴离子表面活性剂（十二烷基苯磺酸钠）的存在会由于与铁离子形成络合物而抑制非离子表面活性剂的降解，但是阳离子表面活性剂（十二烷基三甲基氯化铵）的存在对光芬顿降解过程的影响不大。非离子表面活性剂。

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  • 来源
    《Journal of Environmental Science and Health》 |2012年第8期|p.1087-1095|共9页
  • 作者

    ERINA ONO; MASAHIRO TOKUMURA; YOSHINORI KAWASE;

  • 作者单位

    Research Center for Biochemical und Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama, Japan;

    Research Center for Biochemical und Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama, Japan;

    Research Center for Biochemical und Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    non-ionic surfactant; cationic surfactant; anionic surfactant; photo-fenton degradation; mineralization;

    机译：非离子表面活性剂阳离子表面活性剂阴离子表面活性剂光芬顿降解;矿化;

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