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Adsorption and chlorination of dibenzo-p-dioxin and 1-chlorodibenzo-p-dioxin on fly ash from municipal incinerators
Authors:HO Rghei  GA Eiceman
Institution:Department of Chemistry New Mexico State University Las Cruces, NM 88003 U.S.A.
Abstract:Adsorption and chlorination reactions for dibenzo-p-dioxin (DD) and 1-chlorodibenzo-p-dioxin (1-MCDD) on fly ash were characterized quantitatively using laboratory-based simulation of stack emissions with air and HCl-air atmospheres. Influences of contact time and temperature were studied and results showed behavior of DD and 1-MCDD consistent with that for 1,2,3,4-tetrachlorodibenzo-p-dioxin. Di-, tri-, and tetra-chlorinated dioxins were major compounds produced from heterogenous phase reactions of DD and 1-MCDD with HCl in air. Total conversion through reactions alone were as high as 81% and 58% respectively.
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