Chemical Engineering Journal, Journal Year: 2019, Volume and Issue: 391, P. 123488 - 123488

Published: Nov. 14, 2019

Different types of photolytic and photocatalytic advanced oxidation processes (AOPs) were used for treatment refinery effluents from bitumen production. The efficiency was evaluated by analyzing chemical oxygen demand (COD), biological (BOD5), volatile organic compounds (VOCs) sulfide ions concentration. studies revealed a synergistic effect application external oxidants (O3, H2O2, O3/H2O2) with TiO2 UV applied improved COD BOD5 reduction as well the degradation VOCs present in effluents. Among studied process combined peroxone (TiO2/UV/O3/H2O2) optimal most economical technology. It allows to reduce 38 32% respectively degrade 84% total 280 min treatment. At this conditions reduced exceeds over 30% theoretical value based on dose oxidants, which proves importance photocatalysis developed completely depleted all experiments first 30 addition AOPs technology decrease cost using less amount chemicals achieving similar when comparing non-catalytic technologies. these technologies can be conducted two alternative scenarios; whether deplete sulfides concentration or maximize efficiency. In both options, are promising pre-treatment before other effective at neutral/acidic pH values stage. Further should developed, scaling up pilot scale real case scenario check possibility its implementation industrial practice.

Language: Английский