Chiang Mai Journal of Science

The present study aimed to investigate degradation and detoxification of chlorophene (CP). The removal percent of CP of each parameter was investigated and compared in catalytic treatments in the presence of hydrogen peroxide using salen, porphyrin and salen-porphyrin complexes as the biomimetic catalysts. The CP concentration and degradation products of treated CP solutions were analysed by HPLC and LC-TOF-MS, respectively. Their toxicity were evaluated according to the growth inhibition of Chlorella vulgaris (C. vulgaris), and explained in terms of total carbon content (TCC). Comparing the removal percent of CP in three above-mentioned processes, it could be concluded that, in the process by the use of zinc salen-porphyrin complex (ZnPSC6), CP degradation and detoxification were rather better than zinc salen complex (Zn(salen)) and zinc porphyrin complex (Zn(Phe-TPP))-treatments, and further improved when imidazole and pyridine were added. The results reported in this work indicate that ZnPSC6 derived from the combination of salen and porphyrin complexes significantly improved the CP degradation in catalytic treatment.