A novel, practical and inexpensive method has been used for treating tributyl phosphate. In this study, gasification of tributyl phosphate in supercritical water (SCW) was investigated in a reactor at 600°C, 36 MPa, residence time of 600-3600 s and K2CO3 catalyst (100 -300 mg/L). The results showed that K2CO3 addition and increasing the temperature increased H2 fraction. The precipitated alkali in the reactor still showed high catalytic effect on the subsequent gasification of tributyl phosphate without further alkali addition. The supercritical water gasification ( SCWG) of tributyl phosphate and a set of related reaction products were investigated in batch reactors by varying the temperature (T, 540±600 °C), time (t, 30±60 min), (H2O2 dose, 3000±6000 mg/L). The COD removal efficiency increased significantly as the H2O2 dose increased, whereas this effect was very limited at high H2O2 dose (> 4000 mg/L).
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