Abstract
The oxidative efficiency of Ti(IV)-catalyzed H2O2/O3 (Ti(IV)/H2O2/O3) for acetic acid (HAc) degradation was investigated in the initial pH range of 1.0 to 6.0, and the effects of some common inorganic ions were also discussed in detail. The results showed that the effects of SO4 2− and NO3 − on the efficiency of Ti(IV)/H2O2/O3 were negligible. However, adding Br− greatly reduced the removal rate of HAc. The presence of Cl− also reduced the efficiency of Ti(IV)/H2O2/O3, but its negative effect became negligible in the initial pH range of 4.5 to 5.5. The presence of H2PO4 − could improve the removal rate of HAc, and addition of sodium carbonate had no influence on the efficiency of Ti(IV)/H2O2/O3 in the initial pH range of 4.5 to 5.5.
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