American Journal of Chemical Engineering
Volume 8, Issue 4, July 2020, Pages: 96-102
Received: Dec. 31, 2019;
Accepted: Sep. 3, 2020;
Published: Sep. 21, 2020
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Wenling Yang, College of Chemical and Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang, China
Tan Wang, College of Chemical and Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang, China
Jiu Wu, College of Chemical and Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang, China
Using nickel oxide and ferric oxide materials, and ceramsite as carrier, the catalysts have been prepared by impregnation method including single-component and multi-component catalysts. The single-component and multi-component catalysts were used to study the COD removal performance of pharmaceutical secondary effluent respectively. First, the factors preparation parameters (i.e., calcination temperature and calcination time) of NixO-FexO/ceramsite and operational parameters (i.e., initial pH and the catalyst dosage) of O3-NixO-FexO/ceramsite system were optimized, respectively. The results showed that the optimum conditions of NixO-FexO/ceramsite catalyst oxidation reaction were as follows: calcination temperature is 600°C, the calcination time is 5 h, the optimum catalyst dosage is 8g/L, the initial pH is in alkaline condition, which is more conducive to the reaction. The average COD removal rate of the effluent can reach about 80% under the above best conditions. then, characteristics of the NixO-FexO/ceramsite catalysts were studied through scanning electron microscopy (SEM), X-ray fluorescence (XRF) and X-ray diffraction (XRD), respectively. The results show that Nickel and iron oxides was uniformly deposited on the ceramsite surface when NixO-FexO/ceramsite was prepared. Finally, The stability of the catalyst in the system of O3-NixO-FexO/ceramsite was studied. Collectively, these results suggest that the NixO-FexO/ceramsite should be proposed as a promising catalyst for the decomposition of ozone.
Preparation of NixO-FexO/Ceramsite Catalyst and Its Application in Advanced Treatment of Pharmaceutical Wastewater, American Journal of Chemical Engineering. Special Issue: Water Treatment.
Vol. 8, No. 4,
2020, pp. 96-102.
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