The effect of high-energy radiation on aqueous solution of Acid Red 1 textile dye

摘要

The effect of high-energy radiation on Acid Red 1 (AR1) azo-dye solution was investigated by UV-Vis spectroscopy and chemical oxygen demand (COD) measurements.Doses in the order of 10kGy cause complete decolouration of the 10~(-3)-10~(-4)mol dm~3 solutions;however,for complete mineralization doses higher by 1-2 order of magnitude are needed.Hydrated electrons and H* atom are more effective in fading reaction,while the "OH radicals have higher efficiency in mineralization.The HO_2(centre dot)/O_2~(centre dot -) radical-radical anion pair is rather inefficient in fading reaction.