Dechlorination of Pops in Fly Ash and Metals Accumulation in Ariake Bay : DECHLORINATION OF POLYCHLORINATED AROMATIC COMPOUNDS IN FLY ASH AND METALS ACCUMULATION IN ARIAKE BAY, JAPAN

Dechlorination of chlorobenzene and substituted chlorobenzene compounds on fly ash under oxygen deficient and mild conditions was performed. Reactions were carried out at different temperature with different mixed organic solvents. Solutions of sulfur with potassium hydroxide, sodium hydroxide and calcium hydroxide were applied for hydro-de3chlorination. Dechlorination of chlorobenzene, dichlorobenzene, trichlorobenzene and hexa-chlorobenzene was higher in water/isopropanol solvent by using a solution of calcium hydroxide/sulfur which was further increased by addition of sodium hydroxide. Whereas dechlorination % of p-nitrochlorobenzene, p-chloroanisole and 1-chloronaphthalene was higher at temperature