Wastewater treatment with ionizing radiation

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• 作者：László Wojnárovits ; Erzsébet Takács
• 关键词：Water purification ; Advanced oxidation processes ; Hydroxyl radical ; Water radiolysis ; Pollutant degradation
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：311
• 期：2
• 页码：973-981
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

In water treatment by ionizing radiation ·OH is suggested to initiate the degradation of organics. In these reactions mostly carbon centred radicals form. Here we show that other inorganic radicals also highly contribute to the initiation of degradation. Cl− and HCO₃− in the treated water reacting with ·OH transform to Cl₂·− and CO₃·−. In their reactions C-centred radicals form, too. The reactions of e_aq− and H· water radiolysis intermediates may also produce carbon centred radicals. The C-centred radicals react readily with dissolved O₂, this is the starting step of the gradual oxidation.