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Electroplating sludge derived zinc-ferrite catalyst for the efficient photo-Fenton degradation of dye
A zinc-dominant ferrite catalyst for efficient degradation of organic dye was prepared by the calcination of electroplating sludge (ES). Characterizations indicated that zinc ferrite (ZnFe.sub.2O.sub.4) coexisted with Fe.sub.2O.sub.3 structure was the predominant phase in the calcined electroplating sludge (CES). CES displayed a high decolorization ratio (88.3%) of methylene blue (MB) in the presence of H.sub.2O.sub.2 combined with UV irradiation. The high efficiency could be ascribed to the photocatalytic process induced by ZnFe.sub.2O.sub.4 and the photo-Fenton dye degradation by ferrous content, and a small amount of Al and Mg in the sludge might also contribute to the catalysis. Moreover, the degradation capability of dye by CES was supported by the synthetic ZnFe.sub.2O.sub.4 with different Zn to Fe molar ratio (n(Zn): n(Fe)), as 84.81%-86.83% of dye was removed with n(Zn): n(Fe) ranged from 1:0.5 to 1:3. All synthetic ferrite samples in the simulation achieved adjacent equilibrium decolorization ratio, the flexible proportioning of divalent metal ions (M.sup.2+) to trivalent metal ions (M.sup.3+) applied in the synthesis indicated that the catalyst has a high availability. Therefore, an efficacious catalyst for the degradation of dye can potentially be derived from heavy metal-containing ES, it's a novel approach for the reutilization of ES.
Electroplating sludge derived zinc-ferrite catalyst for the efficient photo-Fenton degradation of dye
A zinc-dominant ferrite catalyst for efficient degradation of organic dye was prepared by the calcination of electroplating sludge (ES). Characterizations indicated that zinc ferrite (ZnFe.sub.2O.sub.4) coexisted with Fe.sub.2O.sub.3 structure was the predominant phase in the calcined electroplating sludge (CES). CES displayed a high decolorization ratio (88.3%) of methylene blue (MB) in the presence of H.sub.2O.sub.2 combined with UV irradiation. The high efficiency could be ascribed to the photocatalytic process induced by ZnFe.sub.2O.sub.4 and the photo-Fenton dye degradation by ferrous content, and a small amount of Al and Mg in the sludge might also contribute to the catalysis. Moreover, the degradation capability of dye by CES was supported by the synthetic ZnFe.sub.2O.sub.4 with different Zn to Fe molar ratio (n(Zn): n(Fe)), as 84.81%-86.83% of dye was removed with n(Zn): n(Fe) ranged from 1:0.5 to 1:3. All synthetic ferrite samples in the simulation achieved adjacent equilibrium decolorization ratio, the flexible proportioning of divalent metal ions (M.sup.2+) to trivalent metal ions (M.sup.3+) applied in the synthesis indicated that the catalyst has a high availability. Therefore, an efficacious catalyst for the degradation of dye can potentially be derived from heavy metal-containing ES, it's a novel approach for the reutilization of ES.
Electroplating sludge derived zinc-ferrite catalyst for the efficient photo-Fenton degradation of dye
Cao, Zhenbang (author) / Zhang, Jia / Zhou, Jizhi / Ruan, Xiuxiu / Chen, Dan / Liu, Jianyong / Liu, Qiang / Qian, Guangren
2017
Article (Journal)
English
BKL:
43.00
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