淡江大學機構典藏:Item 987654321/50432
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62834/95882 (66%)
造訪人次 : 4175074      線上人數 : 726
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧：
  • 您可在西文檢索詞彙前後加上"雙引號"，以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋，建議至進階搜尋限定作者欄位，可獲得較完整資料
    •  進階搜尋


    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/50432


    題名: Kinetics of pentachlorophenol degradation in soil using heme and peroxide
    作者: Chen, Shyi-tien;Stevens, David K.;Kang, Guyoung;Hsu, Jia-chin;Wu, Shuo-jye
    貢獻者: 淡江大學統計學系
    關鍵詞: Optimization;Soil treatment;Kinetics;Toxicity;Degradation
    日期: 2009-04
    上傳時間: 2010-08-09 17:11:31 (UTC+8)
    出版者: American Society of Civil Engineers (ASCE)
    摘要: Kinetics of an abiotic method for oxidative pentachlorophenol (PCP) degradation in soil under unsaturated conditions and a neutral pH has been studied. Reagents used were heme as the catalyst and peroxide as the oxidant. Our previous results showed that the heme and peroxide degraded PCP efficiently with two optimum doses of heme and peroxide: one was the optimum point derived from the quadratic model fitting with heme of 0.035 g/2 g soil and peroxide of 0.105 g/2 g soil; the other had lower doses of heme (0.017 g/2 g soil) and peroxide (0.095 g/2 g soil) derived from the calculation of 95% confidence interval of the optimum point. Based on these results, the purpose of this study was to examine the kinetics of soil PCP degradation in terms of the rate and extent of PCP destruction at the optimal dosages determined. The results showed that PCP degradation at both optimal dosages looked similar, which showed about 70% of PCP destruction within the first 2 h of reaction and up to 80% of PCP destruction within 1 day after the heme/peroxide treatment. Use of the radio-labeled 14C PCP revealed that 17% of the soil PCP was mineralized to carbon dioxide. Moreover a scaled-up experiment with soil pretreated with ethanol was conducted. The results showed about 70% degradation of PCP which agreed well with the results of the laboratory-scale runs. However the addition of ethanol showed little help in PCP oxidation. Finally a pseudofirst-order kinetic model was employed to describe the trend of the PCP degradation over time, and the outcomes were satisfactory.
    關聯: Journal of Environmental Engineering - ASCE 135(4), pp.279-284
    DOI: 10.1061/(ASCE)0733-9372(2009)135:4(279)
    顯示於類別:[統計學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML100檢視/開啟
    Kinetics of pentachlorophenol degradation in soil using heme and peroxide.pdf477KbAdobe PDF2檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋