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Mechanochemical degradation of chlorinated contaminants in fly ash with a calcium-based degradation reagent |
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| Authors: | Mitoma Yoshiharu Miyata Hideaki Egashira Naoyoshi Simion Alina Marieta Kakeda Mitsunori Simion Cristian |
| Institution: | a Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima 727-0023, Japan b Pharmaceutical Department, Setsunan University, Osaka 535-8585, Japan c “Politehnica” University of Bucharest, Department of Organic Chemistry, Spl. Independentei 313, 060042 Bucharest, Romania |
| Abstract: | This report presents our results in a low-temperature mechanochemical hydrodechlorination process applied to fly ash coming from a municipal waste incinerator in order to efficiently remove all traces of PCDDs, PCDFs and PCBs. We found that the most suitable degradation agent is a mixture of metallic calcium and calcium oxide. A sample of fly ash presenting a TEQ of 5200 pg g−1 was completely detoxified (no traces of PCDDs, PCDFs and PCBs detected) after ball-milling at 400 rpm over night. |
| Keywords: | Mechanochemical dechlorination process Hydrodechlorination PCDDs PCDFs and PCBs Calcium and calcium oxide |
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