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Comparative experimental study of bisphenol A degradation via sulfate radical and electron transfer mechanisms in persulfate-activated advanced oxidation processes

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Bibliographic Details
Title: Comparative experimental study of bisphenol A degradation via sulfate radical and electron transfer mechanisms in persulfate-activated advanced oxidation processes
Authors: Jian Fan, Jia-long Li, Bing-qian Deng, Jie-xin Wang, Wen-bin An, Yu-mei Li, Peng Sun
Source: Water Science and Engineering, Vol 18, Iss 3, Pp 288-300 (2025)
Publisher Information: Elsevier, 2025.
Publication Year: 2025
Collection: LCC:River, lake, and water-supply engineering (General)
Subject Terms: Bisphenol A degradation, Advanced oxidation processes (AOPs), Electron transfer mechanism, Nitrogen-doped carbon nanotubes, Water environment adaptability, River, lake, and water-supply engineering (General), TC401-506
Description: Addressing the growing challenge of water contamination, this study comparatively evaluated a persulfate (PDS) system activated by non-radical nitrogen-doped carbon nanotubes (N-CNTs) versus a PDS system activated by radical-based iron (Fe2+), both used for the degradation of bisphenol A (BPA). The N-CNTs/PDS system, driven by the electron transfer mechanism, achieved remarkable 90.9% BPA removal within 30 min at high BPA concentrations, significantly outperforming the Fe2+/PDS system, which attained only 38.9% removal. The N-CNTs/PDS system maintained robust degradation efficiency across a wide range of BPA concentrations and exhibited a high degree of resilience in diverse water matrices. By directly abstracting electrons from BPA molecules, the N-CNTs/PDS system effectively minimised oxidant wastage and mitigated the risk of secondary pollution, ensuring efficient utilisation of active sites on N-CNTs and sustaining a high catalytic rate. The formation of the N-CNTs-PDS∗ complex significantly enhanced BPA degradation and mineralisation, thereby optimising PDS consumption. These findings highlight the unparalleled advantages of the N-CNTs/PDS system in managing complex wastewater, offering a promising and innovative solution for treating complex industrial wastewater and advancing environmental remediation efforts.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 1674-2370
Relation: http://www.sciencedirect.com/science/article/pii/S1674237025000560; https://doaj.org/toc/1674-2370
DOI: 10.1016/j.wse.2025.07.003
Access URL: https://doaj.org/article/4205f631e5234b1b9607ef48e58cd125
Accession Number: edsdoj.4205f631e5234b1b9607ef48e58cd125
Database: Directory of Open Access Journals
Description
Abstract:Addressing the growing challenge of water contamination, this study comparatively evaluated a persulfate (PDS) system activated by non-radical nitrogen-doped carbon nanotubes (N-CNTs) versus a PDS system activated by radical-based iron (Fe2+), both used for the degradation of bisphenol A (BPA). The N-CNTs/PDS system, driven by the electron transfer mechanism, achieved remarkable 90.9% BPA removal within 30 min at high BPA concentrations, significantly outperforming the Fe2+/PDS system, which attained only 38.9% removal. The N-CNTs/PDS system maintained robust degradation efficiency across a wide range of BPA concentrations and exhibited a high degree of resilience in diverse water matrices. By directly abstracting electrons from BPA molecules, the N-CNTs/PDS system effectively minimised oxidant wastage and mitigated the risk of secondary pollution, ensuring efficient utilisation of active sites on N-CNTs and sustaining a high catalytic rate. The formation of the N-CNTs-PDS∗ complex significantly enhanced BPA degradation and mineralisation, thereby optimising PDS consumption. These findings highlight the unparalleled advantages of the N-CNTs/PDS system in managing complex wastewater, offering a promising and innovative solution for treating complex industrial wastewater and advancing environmental remediation efforts.
ISSN:16742370
DOI:10.1016/j.wse.2025.07.003