Ambiente e Agua - An Interdisciplinary Journal of Applied Science · 2020 · 13 citations · 22 references
EngineeringChemical EngineeringEnvironmental EngineeringWastewater TreatmentWater Quality EngineeringWater TreatmentBiodegradationColor QualityDegradation ProductsDesign For DegradationEnvironmental DegradationWastewater BiotreatmentBiodegradation Of DyesCentral Composite DesignsChemical Oxygen DemandDye DegradationHybrid Process DesignHydrodynamic CavitationOrganic Pollutant DegradationTreatment Time Optimization
This study assessed the degradation of bromothymol blue in a Venturi device based on a hybrid process that combines hydrodynamic cavitation (HC) and hydrogen peroxide (H2O2). A Rotatable Central Composite Design (RCCD) was used to optimize the following variables: pressure, reaction time and molar ratio of hydrogen peroxide. Degradation efficiencies were evaluated based on Chemical Oxygen Demand (COD) and color removals before and after Venturi treatment. Maximum COD (93.42%) and color (93.28%) removals were observed at 4.0 bar inlet pressure, at a treatment time of 25 minutes and at H2O2/effluent (dye) molar ratio of 30:1. The hydrodynamic cavitation/hydrogen peroxide system has great potential to remove normally recalcitrant organic pollutants.
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Sunita Raut-Jadhav, Virendra Kumar Saharan, Dipak V. Pinjari et al. · Journal of Hazardous Materials · 2013 · 158 citations