TY - JOUR
T1 - Catalytic ozonation of high-salinity wastewater using salt-resistant catalyst Fe-Bi@γ-Al2O3
AU - Guo, Lei
AU - Zhang, Ming
AU - Xie, Shuqian
AU - Xiao, Zhiqiang
AU - Sun, Wenquan
AU - Xu, Yanhua
AU - Zhou, Jun
AU - Sun, Yongjun
N1 - Publisher Copyright:
© 2022
PY - 2022/10
Y1 - 2022/10
N2 - In this study, a salt-tolerant Fe-Bi@γ-Al2O3 catalyst with stable structure and excellent catalytic performance was prepared with an impregnation method by using γ-Al2O3 as the carrier. The effects of calcination temperature and calcination time on the catalytic activity of the Fe-Bi@γ-Al2O3 catalyst were evaluated. The catalyst was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, BET, X-ray diffraction, and X-ray fluorescence spectrometry to analyze the relationship between the catalyst's apparent morphology, structural characteristics, and catalytic activity. The optimal working conditions and organic degradation mechanism of Fe-Bi@γ-Al2O3 catalytic ozonation of a high-salinity organic wastewater system were studied. The active components Fe and Bi were successfully loaded on the surface of γ-Al2O3 in the form of Fe2O3 and Bi2O3 crystals. Under the working conditions of ozone aeration rate of 0.2 L/min, catalyst filling rate of 10 %, and pH = 11, the removal rate of COD in high-salinity organic wastewater was 83.9 %. The degradation mechanism of organic matter in wastewater was analyzed using ultraviolet absorption peak and three-dimensional fluorescence spectrum. Kinetic analysis of the COD removal rate of high-salinity organic wastewater under optimal working conditions was carried out. A 3E evaluation model of Fe-Bi@γ-Al2O3 catalyst for ozonation treatment of high-salinity organic wastewater was established to realize overall evaluation of the process performance.
AB - In this study, a salt-tolerant Fe-Bi@γ-Al2O3 catalyst with stable structure and excellent catalytic performance was prepared with an impregnation method by using γ-Al2O3 as the carrier. The effects of calcination temperature and calcination time on the catalytic activity of the Fe-Bi@γ-Al2O3 catalyst were evaluated. The catalyst was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, BET, X-ray diffraction, and X-ray fluorescence spectrometry to analyze the relationship between the catalyst's apparent morphology, structural characteristics, and catalytic activity. The optimal working conditions and organic degradation mechanism of Fe-Bi@γ-Al2O3 catalytic ozonation of a high-salinity organic wastewater system were studied. The active components Fe and Bi were successfully loaded on the surface of γ-Al2O3 in the form of Fe2O3 and Bi2O3 crystals. Under the working conditions of ozone aeration rate of 0.2 L/min, catalyst filling rate of 10 %, and pH = 11, the removal rate of COD in high-salinity organic wastewater was 83.9 %. The degradation mechanism of organic matter in wastewater was analyzed using ultraviolet absorption peak and three-dimensional fluorescence spectrum. Kinetic analysis of the COD removal rate of high-salinity organic wastewater under optimal working conditions was carried out. A 3E evaluation model of Fe-Bi@γ-Al2O3 catalyst for ozonation treatment of high-salinity organic wastewater was established to realize overall evaluation of the process performance.
KW - Catalytic ozone oxidation
KW - Heterogeneous catalysis
KW - High-salinity organic wastewater
KW - Kinetic analysis
KW - Ozone catalyst
UR - http://www.scopus.com/inward/record.url?scp=85138207487&partnerID=8YFLogxK
U2 - 10.1016/j.jwpe.2022.103160
DO - 10.1016/j.jwpe.2022.103160
M3 - 文章
AN - SCOPUS:85138207487
SN - 2214-7144
VL - 49
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 103160
ER -