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首页> 外文期刊>Environmental earth sciences >Reductive dechlorination of polychlorinated biphenyls (PCBs) by ultrasound-assisted chemical process (UACP)
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Reductive dechlorination of polychlorinated biphenyls (PCBs) by ultrasound-assisted chemical process (UACP)

机译:超声辅助化学过程(UACP)对多氯联苯(PCB)进行还原性脱氯

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摘要

The dechlorination of aqueous polychlorinated biphenyls (PCBs) using the ultrasound-assisted chemical process (UACP), which is a combination of ultrasonic irradiation and radical generations using di-tert-butyl peroxide as a radical initiator and ferrous ion as a catalyst at moderate temperature in alkaline 2-propanol, was demonstrated with a high reduction of PCBs. A commercial PCB-containing compound, Aroclor 1260, was also decomposed with the removal efficiency of 97 % achieved within 3 h of UACP. The gas chromatograph was used as a quantitative method to measure the decomposition rate of PCBs. The competitive elimination among the ortho (2-position), meta (3-position), and para (4-position) chlorine atoms of PCB was also identified.
机译:使用超声辅助化学过程(UACP)对多氯联苯水溶液(PCBs)进行脱氯,该过程​​是超声辐照和使用过氧化二叔丁基过氧化物作为自由基引发剂和亚铁离子作为催化剂在适当温度下产生自由基的结合证明了在碱性2-丙醇中加入多溴联苯会减少多氯联苯。商用多氯联苯化合物Aroclor 1260也被分解,在UACP的3小时内去除率达到97%。气相色谱仪用作定量方法来测量PCB的分解速率。还确定了PCB中邻位(2位),间位(3位)和对位(4位)氯原子之间的竞争性消除。

著录项

  • 来源
    《Environmental earth sciences》 |2013年第3期|1025-1032|共8页
  • 作者单位

    Sonny Astani Department of Civil and Environmental Engineering, Viterbi School of Engineering, University of Southern California, KAP 210, 3620 South Vermont Ave., Los Angeles, CA 90089, USA;

    Sonny Astani Department of Civil and Environmental Engineering, Viterbi School of Engineering, University of Southern California, KAP 210, 3620 South Vermont Ave., Los Angeles, CA 90089, USA;

    Department of Environmental Engineering, Kangwon National University, 346 Joongang-ro, Samcheok-si, Gangwon-do, Korea;

    Department of Civil Engineering,Seoul National University of Science and Technology,172 Gongneung-dong, Nowon-gu, Seoul, Korea;

    Sonny Astani Department of Civil and Environmental Engineering, Viterbi School of Engineering, University of Southern California, KAP 210, 3620 South Vermont Ave., Los Angeles, CA 90089, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    PCBs; UACP (ultrasound-assisted chemical process); Dechlorination; Sonication; Radicals; Aroclor; GC (gas chromatography);

    机译:PCB;UACP(超声辅助化学过程);脱氯超声处理自由基阿罗克洛GC(气相色谱);

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