title: Mechanochemical degradation of chlorinated contaminants in fly ash with a calcium-based degradation reagent.
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.
authors.affiliation: Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima 727-0023, Japan. mitomay@pu-hiroshima.ac.jp
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Mitoma
authors.forename: Hideaki
authors.initials: H
authors.lastname: Miyata
authors.forename: Naoyoshi
authors.initials: N
authors.lastname: Egashira
authors.forename: Alina Marieta
authors.initials: AM
authors.lastname: Simion
authors.forename: Mitsunori
authors.initials: M
authors.lastname: Kakeda
authors.forename: Cristian
authors.initials: C
authors.lastname: Simion
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control; D002118:Calcium / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D060729:Coal Ash; D017745:Incineration / Q000379:methods*; D055595:Mechanical Phenomena; D008670:Metals / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D052638:Particulate Matter / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D017610:Calcium Compounds; D060729:Coal Ash; D008670:Metals; D010087:Oxides; D052638:Particulate Matter; D000072317:Polychlorinated Dibenzodioxins; D002244:Carbon; C016538:lime; D011078:Polychlorinated Biphenyls; D002118:Calcium