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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/12047

    Title: pH-affecting sonochemical formation of hydroxyl radicals under 20 kHz ultrasonic irradiation
    Authors: Ting-Nien Wu(吳庭年)
    Meng-Chun Shi
    Keywords: Ultrasonic
    Date: 2010-07
    Issue Date: 2010-11-24 12:21:01 (UTC+8)
    Abstract: Advanced oxidation processes have drawn much attention in their application to wastewater
    treatment recently. However, it is seldom to utilize sonochemical degradation as the tool of
    environmental remediation. This study utilized 20 kHz ultrasonic irradiation as the mechanism of
    radical production. The production rate of radicals serves as the evaluation tool of sonolysis
    efficiency under the control of different pHs. Three schemes of detecting radicals were employed,
    including Fricke measurement, hydrogen peroxide indirect measurement, and 4-chlorobenzoic acid
    probe measurement. The experimental results were confirmed through different measurement
    methods. The threshold of ultrasonic intensity was also examined to form radicals under the acidic,
    neutral, or basic surroundings.
    Appears in Collections:[環境工程系所] 期刊論文

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