Adsorption Removal of Phenol in Water and Simultaneous Regeneration by Catalytic Oxidation

A series of sorbents were prepared, and their performance on removal of phenol from wastewater was investigated in this study. It indicated that the suitable compositions for the prepared sorbent mainly consisted of 0.5 wt.% PtO, 4.5 wt.% MnO, 1.99 wt.% Fe₂O₃, and 2.4 wt.% CoO, respectively, and supported on Al₂O₃, shortened as an APMFC_1.2 sorbent, A, P, M, F, C indicated Al₂O₃, PtO, MnO, Fe₂O₃, CoO, respectively, and number 1.2 as the molar ratio of Co. Studies showed that the spent sorbent could be effectively regenerated at 240°C by gas mixtures of 6.0 mol.% steam balanced with air. Multiadsorption–regeneration cycles conducted on APMFC_1.2 sorbent indicated that it had good regenerability at the experimental conditions, and characterized results further confirmed that the APMFC_1.2 sorbent had stable structure, which implied APMFC_1.2 sorbent could be a promising sorbent/catalyst to be used in the process of removal of organic compounds in wastewater by adsorption combined with catalytic oxidation methods.