3.2. Effect of temperature on BPA degradation
BPA oxidation by permanganate was strongly dependent on
temperature since the kapp of BPA destruction by permanganate increased
significantly from 16.32 to 1.03 102 M1 s1 within
creasing temperatures from 10 C to 30 C, as shown in Fig. 2 and
Table S2.
ln kapp ¼ ln A
Ea
RT ð3Þ
According to the Arrhenius equation (Eq. (3)), plotting ln(kapp)
vs. 1/T would yield a linear curve, as shown in Fig. 2, and the activation
energy (Ea) was determined to be 67.8 kJ mol1. This Ea value
was very close to that of antibiotics (lincomycin, 68.4 kJ mol1)
oxidation by permanganate [29].
3.3. Effect of pH on BPA degradation
Fig. 3 demonstrates that the rate of BPA oxidation by permanganate
is heavily dependent on pH. There was a slight increase in kapp