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Efficient degradation of cellulosic ethanol wastewater by perovskite activation of Sr element A-site doped lanthanide copper chalcogenide materials

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Abstract

The degradation of cellulosic ethanol wastewater by peroxymonosulfate (PMS) is one of the important methods to solve the environmental problems caused by it. In order to improve the degradation efficiency of cellulosic ethanol wastewater, the design of more catalytically active and stable chalcogenide catalysts has become a problem that needs to be solved nowadays. The application of foreign cations to replace the A- or B-site to increase the oxygen vacancy of the chalcocite catalyst to improve the efficiency of chalcocite catalytic degradation of wastewater has received much attention. In this work, the perovskite material LaCuO3 was synthesized using a citric acid-sol–gel method, and the novel material La1-xSrxCuO3 was prepared by doping of Sr element at the A position. In order to prepare catalytic materials with better performance, this study carried out performance-optimized degradation experiments on the prepared materials and determined that the catalytic efficiency of La0.5Sr0.5CuO3 prepared under the conditions of the complexing agent dosage of 1:2, the gel temperature of 80 °C, and the calcination temperature of 700 °C was better than that of the catalytic materials prepared under other conditions. The prepared material has good recycling function; after four times recycling, the removal rate of pollutant COD is still more than 85%. This work provides a new synthesis method of perovskite material with good recycling function and high catalytic efficiency for the degradation technology of cellulosic ethanol wastewater.

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The datasets generated during and analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors would like to express their sincere thanks for the financial support in the process of accomplishing this study.

Funding

This work was supported by National Natural Science Foundation of China (No. 52270101) and Natural Science Foundation of Heilongjiang Province of China (No. LH2022E091).

National Natural Science Foundation of China,No.52270101,Likun Huang,Natural Science Foundation of Heilongjiang Province of China,No.LH2022E091,Likun Huang

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All authors contributed to the study conception and design. LH and GW: conceptualization and funding acquisition. HW: writing—original draft. DM and YH: resources and supervision. XD and SZ: data collection. DW and DW: formal analysis.

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Correspondence to Guangzhi Wang.

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Huang, L., Wang, H., Wang, G. et al. Efficient degradation of cellulosic ethanol wastewater by perovskite activation of Sr element A-site doped lanthanide copper chalcogenide materials. Environ Sci Pollut Res 31, 6511–6526 (2024). https://doi.org/10.1007/s11356-023-31573-7

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  • DOI: https://doi.org/10.1007/s11356-023-31573-7

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