Removal of phenol from hyper-saline wastewater using Cu/Mg/Al-chitosan-H2O2 in a fluidized catalytic bed reactor

摘要

This paper discusses the successful synthesis of Cu/Mg/Al-chitosan and its use in a fluidized catalytic bed reactor to degrade phenol from hyper-saline wastewater. The results show that phenol can be completely oxidized by Cu/Mg/Al-chitosan-H2O2 within 7 rnin at acidic pH. The influence of various variables including solution pH, salinity, H2O2 concentration, and Cu/Mg/Al-chitosan quantity is investigated to study their effect on phenol degradation in synthetic saline wastewater. The maximum degradation of phenol was achieved at pH 2 and 7 g Cu/Mg/Al-chitosan. During this process, chloride and sulfate ions have a synergistic effect on phenol removal, where the oxidation rate of phenol in the presence of sulfate ions is twice of that obtained under controlled conditions. Industrial wastewater containing phenol can be effectively treated using a relatively low concentration of Cu/Mg/Al-chitosan, 5 g, and in a short hydraulic retention time of 7 min. Overall, the method demonstrates efficacy and holds promise as a simple and elegant method to eliminate phenol from wastewater.