Catalytic wet oxidation of high concentration pharmaceutical wastewater with Fe3+ as catalyst

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Xu ZengJianfu Zhao

Abstract

Catalytic wet oxidation of high concentration pharmaceutical wastewater with Fe3+ as catalyst was carried out in a batch reactor. Results showed that the degradation of pharmaceutical wastewater was enhanced significantly by Fe3+. The effects of reaction parameters, such as the catalyst dose, reaction temperature, time, and initial oxygen pressure, were discussed. The chemical oxygen demand (COD) removal increased with the increases of catalyst dose, temperature, time and oxygen supply. With the initial COD 34,000-35,000 mg/L, approximately 70% COD removal can be achieved under the conditions of catalyst 1.0 g and oxygen pressure 1.0 MPa at 250 °C after 60 min. The results of kinetic studies showed that two reaction steps existed in this oxidation process, which followed an apparent first-order rate law. This process provides an effective approach for the pretreatment of high concentration pharmaceutical wastewater.

References

Apr 10, 2004·Journal of Hazardous Materials·Fares Al MomaniSantiago Esplugas
Jan 24, 2007·Journal of Hazardous Materials·Bambang VeriansyahJong-Chol Lee
Dec 3, 2010·Water Research·Maria Huerta-FontelaFrancesc Ventura
Feb 4, 2014·Journal of Environmental Management·Ciro Fernando Bustillo-LecompteEdgar Quiñones-Bolaños

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