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The degradation of azo dye C.I. Acid Red 14 (AR14) was investigated using cast iron in the absence and presence of low frequency ultrasound (59kHz). The effects of pH, amount of cast iron ([Fe] 0 ) and initial concentration of AR14 ([dye] 0 ) on the degradation of AR14 by cast iron combined with low frequency ultrasound had been assessed. The degradation followed the first-order kinetics...
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