Taipei Medical University Institutional Repository:Item 987654321/3006
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    题名: Decolorization;mineralization;and toxicity reduction of Acid Orange 6 by iron-sacrificed plates in the electrocoagulation processes.
    作者: 張怡怡
    Chang EE;Hsing HJ;Ko CS;Chiang PC
    贡献者: 醫學系生化學科
    日期: 2007
    上传时间: 2009-08-21 16:33:29 (UTC+8)
    摘要: In this study, electrocoagulation (EC) was used to investigate the decolorization and mineralization of
    an azo dye solution, as well as biodegradation enhancement and toxicity reduction. Initial pH, flow rate, and acid
    orange 6 concentration were investigated, and the optimum operational parameters were found to be pH = 4, flow
    rate (Q) = 0.3 to 0.5 L min−1, and current density = 68.3 A dm−2. With these optimal parameters, total organic
    carbon and color removal efficiencies of 40% and 98% were achieved, respectively. Biodegradation was evaluated
    using the ratio of the 5-day biological oxygen demand (BOD5) and the chemical oxygen demand (COD), which
    was 0.19 to 0.25 initially and increased to the range 0.25 to 0.4 after EC treatment, indicating that biodegradability
    was significantly enhanced. The mean effective concentration (EC50) was measured to represent the toxicity of the
    solution. Initial EC50 values ranged from 25 to 6.6%, which represent extremely toxic to very toxic solutions. After
    EC treatment, the toxicity levels were reduced significantly, suggesting that the EC process could be a promising
    method for reducing the toxicity of textile wastewater.
     2007 Society of Chemical Industry
    關聯: J. Chem Technol biotechnol.(82):488-495.
    数据类型: article
    显示于类别:[生物化學暨細胞分子生物學科] 期刊論文

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