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Article

Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides

1
School of Water Conservancy Science & Engineering, Zhengzhou University, Zhengzhou 450000, China
2
School of Ecology and Environment, Zhengzhou University, Zhengzhou 450000, China
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 156; https://doi.org/10.3390/w13020156
Received: 14 December 2020 / Revised: 29 December 2020 / Accepted: 6 January 2021 / Published: 11 January 2021
Chemical synthetic pharmaceutical wastewater has characteristics of high concentration, high toxicity and poor biodegradability, so it is difficult to directly biodegrade. We used acid modified attapulgite (ATP) supported Fe-Mn-Cu polymetallic oxide as catalyst for multi-phase Fenton-like ultraviolet photocatalytic oxidation (photo-Fenton) treatment with actual chemical synthetic pharmaceutical wastewater as the treatment object. The results showed that at the initial pH of 2.0, light distance of 20 cm, and catalyst dosage and hydrogen peroxide concentration of 10.0 g/L and 0.5 mol/L respectively, the COD removal rate of wastewater reached 65% and BOD5/COD increased to 0.387 when the reaction lasted for 180 min. The results of gas chromatography-mass spectrometry (GC-MS) indicated that Fenton-like reaction with [email protected] had good catalytic potential and significant synergistic effect, and could remove almost all heterocycle compounds well. 3D-EEM (3D electron microscope) fluorescence spectra showed that the fluorescence intensity decreased significantly during catalytic degradation, and the UV humus-like and fulvic acid were effectively removed. The degradation efficiency of the nanocomposite only decreased by 5.8% after repeated use for 6 cycles. It seems appropriate to use this process as a pre-treatment for actual pharmaceutical wastewater to facilitate further biological treatment. View Full-Text
Keywords: pharmaceutical wastewater; heterogeneous catalyst; photo-Fenton; [email protected] pharmaceutical wastewater; heterogeneous catalyst; photo-Fenton; [email protected]
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MDPI and ACS Style

Lu, M.; Wang, J.; Wang, Y.; He, Z. Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides. Water 2021, 13, 156. https://doi.org/10.3390/w13020156

AMA Style

Lu M, Wang J, Wang Y, He Z. Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides. Water. 2021; 13(2):156. https://doi.org/10.3390/w13020156

Chicago/Turabian Style

Lu, Manjing; Wang, Jiaqi; Wang, Yuzhong; He, Zhengguang. 2021. "Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides" Water 13, no. 2: 156. https://doi.org/10.3390/w13020156

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