Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation

Si, Wenhao; Qi, Fei; Wang, Kangjun; Wang, Qiang; Zeng, Zequan; Niu, Yuting; Huang, Zhanggen

doi:10.3390/catal13121512

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Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation

by

Wenhao Si

^1,2,†,

Fei Qi

^2,†,

Kangjun Wang

¹,

Qiang Wang

²,

Zequan Zeng

^2,*,

Yuting Niu

² and

Zhanggen Huang

^2,3,*

¹

College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China

²

State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

³

University of Chinese Academy of Sciences, Beijing 100049, China

^*

Authors to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Catalysts 2023, 13(12), 1512; https://doi.org/10.3390/catal13121512

Submission received: 6 October 2023 / Revised: 28 November 2023 / Accepted: 5 December 2023 / Published: 15 December 2023

(This article belongs to the Special Issue Environmental Catalysis in Advanced Oxidation Processes, 2nd Edition)

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Abstract

With the development of coal chemical technology, a large amount of gasification slag and wastewater are produced through coal gasification. Efficient gasification slag utilization and wastewater treatment have attracted much attention. In this study, gasification slag was modified and used as a low-cost and efficient catalyst to activate persulfate for acetaminophen degradation. Via the analysis of high-resolution X-ray photoelectron spectroscopy, the surfaces of nitric acid and calcined modified gasification slag retained a considerable number of carbonyl and graphite N functional groups. These proved to be effective active sites for the activation of persulfate. X-ray diffraction analysis revealed that the gasification slag was composed of carbon and SiO₂. The evaluation of catalytic activity and application of density functional theory proved that the interaction between carbonyl and graphitic nitrogen significantly affected the catalyst activity. When the ratio of graphitic nitrogen to carbonyl was 1:3, the adsorption and activation of persulfate were significantly enhanced. The results of the quenching experiments also confirmed that the non-free radical pathway is the main pathway to activate persulfate using the gasification slag. This study provides a new approach to industrial waste utilization in wastewater treatment.

Keywords: persulfate; gasification slag; nonradical oxidation; acetaminophen

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MDPI and ACS Style

Si, W.; Qi, F.; Wang, K.; Wang, Q.; Zeng, Z.; Niu, Y.; Huang, Z. Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation. Catalysts 2023, 13, 1512. https://doi.org/10.3390/catal13121512

AMA Style

Si W, Qi F, Wang K, Wang Q, Zeng Z, Niu Y, Huang Z. Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation. Catalysts. 2023; 13(12):1512. https://doi.org/10.3390/catal13121512

Chicago/Turabian Style

Si, Wenhao, Fei Qi, Kangjun Wang, Qiang Wang, Zequan Zeng, Yuting Niu, and Zhanggen Huang. 2023. "Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation" Catalysts 13, no. 12: 1512. https://doi.org/10.3390/catal13121512

APA Style

Si, W., Qi, F., Wang, K., Wang, Q., Zeng, Z., Niu, Y., & Huang, Z. (2023). Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation. Catalysts, 13(12), 1512. https://doi.org/10.3390/catal13121512

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Modified Gasification-Slag-Driven Persulfate Activation for Highly Efficient Degradation of Acetaminophen: N/O Active Site Regulation and Nonradical Oxidation

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