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Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3.
Environ Sci Pollut Res Int. 2021 Aug; 28(30):41504-41515.ES

Abstract

A composite Mn-Cu-Ce tri-metal oxide supported on γ-Al2O3 (Mn-Cu-Ce/Al2O3) catalyst was prepared by an impregnation-calcination method and investigated in the catalytic ozonation treatment of real coal chemical wastewater (CCW). The catalyst was characterized by XRD, SEM, TEM, XRF, BET, and XPS techniques. The results showed that Mn, Cu, and Ce metal oxides were evenly distributed on the Al2O3 surface and the catalyst maintained a large surface area and a high pore volume compared with the pristine Al2O3. The synergy between Mn, Cu, and Ce oxides greatly enriched the catalytic active sites and enhanced the ozonation performance. The catalytic ozonation process with Mn-Cu-Ce/Al2O3 increased the removal rate of total organic carbon (TOC) by 31.6% compared with ozonation alone. The ketones, aromatic compounds, phenols, and nitrogen-containing heterocyclic compounds in CCW have been effectively degraded and mineralized by Mn-Cu-Ce/Al2O3 catalytic ozonation process, and its biodegradability has also been significantly improved. The experimental results of ∙OH scavengers revealed that the mechanism of Mn-Cu-Ce/Al2O3 catalytic ozonation was to promote the generation of ∙OH radicals. The catalytic activity of Mn-Cu-Ce/Al2O3 was only a slight decrease in six consecutive catalytic ozonation treatments, showing good stability. Therefore, Mn-Cu-Ce/Al2O3 can be used as a candidate catalyst for the advanced treatment of refractory organic wastewaters upon catalytic ozonation.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Zhao KH
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Helanshan Rd. 539, Yinchuan, 750021, China.
Ma YL
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Helanshan Rd. 539, Yinchuan, 750021, China. yulongma796@sohu.com.
Lin F
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Helanshan Rd. 539, Yinchuan, 750021, China.
Ge SY
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Helanshan Rd. 539, Yinchuan, 750021, China.
Zhu L
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Helanshan Rd. 539, Yinchuan, 750021, China.

MeSH

CatalysisCoalOzoneWastewaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33782829

Citation

Zhao, Kang-He, et al. "Refractory Organic Compounds in Coal Chemical Wastewater Treatment By Catalytic Ozonation Using Mn-Cu-Ce/Al2O3." Environmental Science and Pollution Research International, vol. 28, no. 30, 2021, pp. 41504-41515.
Zhao KH, Ma YL, Lin F, et al. Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3. Environ Sci Pollut Res Int. 2021;28(30):41504-41515.
Zhao, K. H., Ma, Y. L., Lin, F., Ge, S. Y., & Zhu, L. (2021). Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3. Environmental Science and Pollution Research International, 28(30), 41504-41515. https://doi.org/10.1007/s11356-021-13629-8
Zhao KH, et al. Refractory Organic Compounds in Coal Chemical Wastewater Treatment By Catalytic Ozonation Using Mn-Cu-Ce/Al2O3. Environ Sci Pollut Res Int. 2021;28(30):41504-41515. PubMed PMID: 33782829.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3. AU - Zhao,Kang-He, AU - Ma,Yu-Long, AU - Lin,Feng, AU - Ge,Shao-Ying, AU - Zhu,Li, Y1 - 2021/03/30/ PY - 2020/11/06/received PY - 2021/03/22/accepted PY - 2021/3/31/pubmed PY - 2021/8/12/medline PY - 2021/3/30/entrez KW - Catalytic ozonation KW - Coal chemical wastewater KW - Mn-Cu-Ce oxides KW - Refractory organic compound SP - 41504 EP - 41515 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 28 IS - 30 N2 - A composite Mn-Cu-Ce tri-metal oxide supported on γ-Al2O3 (Mn-Cu-Ce/Al2O3) catalyst was prepared by an impregnation-calcination method and investigated in the catalytic ozonation treatment of real coal chemical wastewater (CCW). The catalyst was characterized by XRD, SEM, TEM, XRF, BET, and XPS techniques. The results showed that Mn, Cu, and Ce metal oxides were evenly distributed on the Al2O3 surface and the catalyst maintained a large surface area and a high pore volume compared with the pristine Al2O3. The synergy between Mn, Cu, and Ce oxides greatly enriched the catalytic active sites and enhanced the ozonation performance. The catalytic ozonation process with Mn-Cu-Ce/Al2O3 increased the removal rate of total organic carbon (TOC) by 31.6% compared with ozonation alone. The ketones, aromatic compounds, phenols, and nitrogen-containing heterocyclic compounds in CCW have been effectively degraded and mineralized by Mn-Cu-Ce/Al2O3 catalytic ozonation process, and its biodegradability has also been significantly improved. The experimental results of ∙OH scavengers revealed that the mechanism of Mn-Cu-Ce/Al2O3 catalytic ozonation was to promote the generation of ∙OH radicals. The catalytic activity of Mn-Cu-Ce/Al2O3 was only a slight decrease in six consecutive catalytic ozonation treatments, showing good stability. Therefore, Mn-Cu-Ce/Al2O3 can be used as a candidate catalyst for the advanced treatment of refractory organic wastewaters upon catalytic ozonation. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/33782829/Refractory_organic_compounds_in_coal_chemical_wastewater_treatment_by_catalytic_ozonation_using_Mn_Cu_Ce/Al2O3_ DB - PRIME DP - Unbound Medicine ER -