Characterization and Process Optimization of Transition Metal Compound Catalyst in CWAO Applications

Abstract:

On simulated organic wastewater treatment by catalytic wet oxidation (CWAO) experiments, the transition metal compound Cu-Fe-La/FSC catalysts were characterized by SEM, TEM and FT-IR, and its application in CWAO reaction process conditions were optimized. Catalyst characterization experiments show that the active components on the surface of the Cu-Fe-La/FSC uniformly distribute, and the particle size is 10 to 50 nm; the chemical composition of-OH-and-Al-O-key are remarkable. To optimize the operation process with the orthogonal experiments of catalytic wet air oxidation (CWAO), the results show that in the five factors of influencing COD_Cr removal rates of wastewater, they are arranged according to the influences on water treatment from high to low: catalyst dose, system total pressure, influent concentration, reaction temperature, reaction time. The optimized operating conditions: catalyst dose of 8 g/L, total system pressure of 2.0 MPa, influent concentration of 3000 mg/L, reaction temperature of 180 °C¡æ, reaction time of 60 min. Under the optimized operating conditions, the COD_Cr removal rate of simulated wastewater reached 77.9%.

• Periodical: Advanced Materials Research (Volume 849)
• Pages: 132-136
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.849.132
• Online since: November 2013
• Authors: Ping Li, Yong Li Zhang*, Jin Bing Lin
• Keywords: Catalyst, Catalytic Wet Air Oxidation, Characterization, Process Optimization, Transition Metal

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