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

Abstract

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.% Fe 2 O 3 , and 2.4 wt.% CoO, respectively, and supported on Al 2 O 3 , shortened as an APMFC 1.2 sorbent, A, P, M, F, C indicated Al 2 O 3 , PtO, MnO, Fe 2 O 3 , 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.

Adsorption of phenolic compounds on low-cost adsorbents: A review

“…However, bagasse fly ash generated in the sugar industry does not contain large amounts of toxic metals and has been widely used for adsorption of phenolic compounds [135,136]. Fly ash has a surface area of 15.6 m 2 /g [137]. Its properties are extremely variable and depend strongly on its origin [134,137,138].…”

“…Fly ash has a surface area of 15.6 m 2 /g [137]. Its properties are extremely variable and depend strongly on its origin [134,137,138].…”