DEGRADATION OF 2,4-DICHLOROPHENOL WASTEWATER BY HYDROGEN PEROXIDE IN THE PRESENCE OF BASIC OXYGEN FURNACE SLAG

摘要

The objective of this research was to investigate the use of basic oxygen furnace slag (BOF slag),a final waste slurry of steel making plants, with hydrogen peroxide to degrade 2,4-dichlorophenol wastewater. In an acid solution, BOF slag can be dissociated to produce ferrous ion and react with hydrogen peroxide to produce hydroxyl radicals and degrade 2,4-dichlorophenol. Various factors deemed critical in the degradation of 2,4-dichlorophenol were studied, including hydrogen peroxide dosage, concentration of BOF slag, initial concentration of 2,4-dichlorophenol, and pH value of solution. Experimental results proved that 100 mg/L 2,4-dichlorophenol and its oxidation intermediate could be totally decomposed within 2 h by 20 g/L BOF slag, 103 mM hydrogen peroxide, and pH=2.8.