An efficient dechlorination/detroxification method for p-nitrochlorobenzene, p-chloroanisole and 1 -chlo-ronaphthalene on municipal waste incinerator fly ash in presence of reducing agents with water/alcohol mixtures was developed. Dechlorination percent was higher in water/isopropanol mixture at temperature < 100 deg C. Metal contents of fly ash played a vital role in enhancing dechlorination at low temperature. Moreover, the fly ash particles provided the surface to accomplish reduction and substitution reactions by adsorbing the chlorinated aromatic compound, hydrogen and hydroxyl ions. The mechanism of dechlorination was envisaged.
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