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首页> 外文期刊>Journal of Hazardous Materials >Combined ultrasound/ozone degradation of carbazole in APG_(1214) surfactant solution
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Combined ultrasound/ozone degradation of carbazole in APG_(1214) surfactant solution

机译：APG_（1214）表面活性剂溶液中咔唑的超声/臭氧联合降解

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摘要

We examined the effects of power and treatment time on the ultrasonically enhanced ozonation of carbazole dissolved in APG_(1214) surfactant solutions, including an analysis of the mechanism of ·OH radical formation, the zeta potential of the colloidal suspension, the influence of ultrasound on micellar morphology, and the degradation kinetics for carbazole and APG_(1214). A 30 min ultrasound treatment at 28 kHz and 20W improved the degradation of carbazole by 5-10%, while power levels of 40W and 80W provided improvements only during the first 5 min and resulted in reduced degradation after 15 min. The ·OH concentration was inversely proportional to ultrasound power, and directly proportional to the irradiation time. The absolute value of the APG_(1214) micelle zeta potential was inversely proportional to power and decreased with increasing irradiation time. The relationships of ·OH radical concentration in APG_(1214) micelles, the zeta potential, and the micellar dynamic radius (R_h) to ultrasonic power and time are the key factors affecting carbazole degradation in this system.
机译：我们研究了功率和处理时间对溶解在APG_（1214）表面活性剂溶液中的咔唑的超声增强臭氧氧化的影响，包括对·OH自由基形成机理，胶体悬浮液的Zeta电位，超声对胶束形态，以及咔唑和APG_（1214）的降解动力学。在28 kHz和20W下进行30分钟的超声处理，咔唑的降解提高了5-10％，而40W和80W的功率水平仅在前5分钟提供了改善，并在15分钟后降低了降解。 ·OH浓度与超声功率成反比，与辐射时间成正比。 APG_（1214）胶束Zeta电位的绝对值与功率成反比，并随照射时间的增加而降低。 APG_（1214）胶束中的·OH自由基浓度，ζ电位和胶束动态半径（R_h）与超声功率和时间的关系是影响咔唑降解的关键因素。

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  • 来源
    《Journal of Hazardous Materials》 |2012年第30期|p.1-7|共7页
  • 作者

    Guodong Ji; Baolong Zhang; Yingchao Wu;

  • 作者单位

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China;

    Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China;

  • 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

    ultrasound; ozone; APG_(1214) surfactant; carbazole; degradation mechanism;

    机译：超声波臭氧;APG_（1214）表面活性剂;咔唑降解机制;

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