Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/21173
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 18034/20233 (89%)
Visitors : 23360454      Online Users : 643
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    CNU IR > Chna Nan Annual Bulletin > No.31 2005 >  Item 310902800/21173
    Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/21173


    Title: 結合微生物脫氯作用與化學氧化反應進行含氯芳香族化合物之降解研究
    Degradation of Pentachlorophenol and Hexachlorobenzene in a Sequence of Microbial Dechlorination and Chemical Oxidation
    Authors: 許菁珊
    張翊峰
    錢紀銘
    王炯強
    陳意銘
    Contributors: 環境資源管理系
    觀光事業管理系
    環境工程與科學系
    Keywords: 五氯酚
    六氯苯
    生物性脫氯作用
    化學性氧化作用
    Pentachlorophenol
    Hexachlorobenzene
    Chemical oxidation
    Dechlorination
    Date: 2005
    Issue Date: 2009-04-27 11:55:56 (UTC+8)
    Abstract: 結合化學氧化與生物分解程序進行有機毒性物質之排除,為近來頗受重視之研究方向,本研究主軸在於探討生物脫氯作用與化學氧化反應之結合成效,並進行五氯酚與六氯苯之生物脫氯降解與化學氧化程序之接續性分解實驗。研究成果顯示,僅採用化學氧化降解,高含氯量之芳香族化合物確實具有抵抗化學氧化之特性,因此Fenton系統針對這類化合物並無明顯降解效果。反之,微生物脫氯降解方面,脫氯作用進行之難易與否與含氯量多寡並無明顯關係,以氯苯化合物而言,高含氯量之六氯苯、五氯苯反較二氯苯更易進行脫氯作用。至於以Fenton系統處理六氯苯與五氯酚之脫氯產物-1,3,5-三氯苯、1,3-二氯苯、1,4-二氯苯、3,4,5-三氯酚、3,5-二氯酚,其降解率可達72%、88%、86%、68%與85%。然而若將化學與脫氯兩步驟結合,因為脫氯作用溶液
    之有機質與微生物的干擾,其後續之化學氧化效率會明顯降低,因此本研究亦採用不同處理方式以減少脫氯溶液之有機質成分與含量,實驗結果發現,當反應溶液之有機質減低時,脫氯產物之後續氧化降解作用有明顯提高之現象,顯示厭氧脫氯作用後,低有機質之培養液有利於後續氧化作用進行,此外,適當降低有機質之方法亦有助於氯酚與氯苯化合物之氧化效率。
    Recently, a combined method of chemical oxidation treatment and biological degradation treatment to deplete the pentachlorophenol (PCP) and hexachlorobenzene (HCB) pollutants was discussed. In this study, the degradations of PCP and HCB were made by microbial dechlorination coupling with chemical oxidation procedures. The results suggested that the highly chlorinated aromatics were more resisted to Fenton oxidation than less chlorinated ones. On the other hand, highly chlorinated aromatics were strongly dechlorinated by acclimated microorganisms but less chlorinated ones were not. In the oxidation experiment of the dechlorination products of HCB and PCP, 135 trichlorobenzene (135-TCB), 13-dichlorobenzene (13-DCB), 14-DCB, 345-trichlorophenol (345-TCP), and 35-dichlorophenol (35-DCP) were treated by Fenton system with decomposition ratios of 72%, 88%, 86%, 69% and 85%, respectively. However, when HCB and PCP were first dechlorinated by acclimated anaerobic microorganisms for removal of chlorines and then introduced directly to a Fenton system for following oxidation and ring cleavage. The organic matters in the dechlorination solutions had reduced the extent of oxidation. In this study, we also evaluated how the organic contents affected the efficiency of Fenton system.
    Relation: 嘉南學報(科技類)31期:p.218-229
    Appears in Collections:[Chna Nan Annual Bulletin] No.31 2005
    [Dept. of Environmental Resources Management] Periodical Articles
    [Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles
    [Dept. of Tourism Management] Periodical Articles

    Files in This Item:

    File Description SizeFormat
    v31_218_229.pdf298KbAdobe PDF669View/Open


    All items in CNU IR are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback