title: Destruction kinetic of PCDDs/Fs in MSWI fly ash using microwave peroxide oxidation.
abstract: Microwave peroxide oxidation is a less greenhouse gas emission and energy-efficient technology to destroy toxic organic compounds in hazardous waste. The research novelty is to adopt the innovative microwave peroxide oxidation in H2SO4/HNO3 solution to efficiently destroy the polychlorinated dibenzo-p-dioxins (PCDDs)/Fs in municipal solid waste incineration fly ash. The major objective of this paper is to study dynamic destruction of PCDDs/Fs using the microwave peroxide oxidation. Almost all PCDDs/Fs in the raw fly ash can be destructed in 120 min at a temperature of 423 K using the microwave peroxide oxidation treatment. It was found that the microwave peroxide oxidation provides the potential to destruct the PCDDs/Fs content in municipal solid waste incinerator (MSWI) fly ash to a low level as a function of treatment time. A useful kinetic correlation between destruction efficiency and treatment conditions is proposed on the basis of the experimental data obtained in this study. The significance of this work in terms of practical engineering applications is that the necessary minimum treatment time can be solved using a proposed graphic illustration method, by which the minimum treatment time is obtained if the desired destruction efficiency and treatment temperature are known. Because of inorganic salt dissolution, the temperature would be a critical factor facilitating the parts of fly ash dissolution. Material loss problem caused by the microwave peroxide oxidation and the effects of treatment time and temperature are also discussed in this paper.
authors.affiliation: a Institute of Environmental Engineering and Management, National Taipei University of Technology , Taipei , Taiwan.
authors.forename: Yu-Min
authors.initials: YM
authors.lastname: Chang
authors.forename: Wen-Bin
authors.initials: WB
authors.lastname: Fang
authors.forename: Kuo-Sheng
authors.initials: KS
authors.lastname: Tsai
authors.forename: Jimmy C M
authors.initials: JC
authors.lastname: Kao
authors.forename: Kae-Long
authors.initials: KL
authors.lastname: Lin
authors.forename: Ching-Ho
authors.initials: CH
authors.lastname: Chen
mesh_terms: D001572:Benzofurans / Q000737:chemistry* / Q000528:radiation effects; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D017745:Incineration; D007700:Kinetics; D008872:Microwaves; D010545:Peroxides / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000737:chemistry / Q000528:radiation effects
chemical_list: D001572:Benzofurans; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D010545:Peroxides; D000072317:Polychlorinated Dibenzodioxins
keywords: MSWI; PCDDs/PCDFs; fly ash; microwave peroxide oxidation