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水热条件下碳酰肼分解二噁英的研究 被引量:5

Chemical decomposition of PCDDs and PCDFs with carbonic dihydrazide in MSWI fly ash
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摘要 研究了保温温度为245、260℃水热条件下使用碳酰肼分解垃圾焚烧飞灰中二噁英的分解效果。结果表明,在高温水热条件下使用碳酰肼作为添加剂有利于二噁英的分解;在245、260℃下保温1h,二噁英的分解率分别达到80%和90%以上,但二噁英毒性当量因2,3,7,8-TCDD的再生成减小很少,甚至增大;同时,在水热条件下,垃圾焚烧飞灰中的重金属取得了良好的稳定效果。 In order to decompose the polychlorinated dibenzo-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs) in the fly ash from municipal solid waste incinerators (MSWI), fly ash was hydrothermal treated with particular weight of carbonic dihydrazide. Keeping the saturation temperature of 245℃ and 260 ℃ for 1 h, the decomposition rates respectively reached to over 80% and 90%. However, the toxic equivalent decreased a little and even increased for the regeneration of congener 2,3,7,8 tetrachlorodibenzo-p-dioxins (2,3,7,8-TCDD). A good stabilization of heavy metal was shown in this experiment.
出处 《环境污染与防治》 CAS CSCD 北大核心 2008年第11期1-3,8,共4页 Environmental Pollution & Control
基金 国家自然科学基金资助项目(No.50708068) 同济大学-光大环保创新基金资助项目(No.20071354)
关键词 水热反应 二噁英 垃圾焚烧飞灰 重金属 碳酰肼 hydrothermal reaction PCDDs/PCDFs MSWI fly ash heavy metal carbonic dihydrazide
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参考文献9

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二级参考文献31

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