UV Stimulated Manganese Dioxide for the Persulfate Catalytic Degradation of Bisphenol A

Dong, Guihua and Chen, Bing and Liu, Bo and Stoyanov, Stanislav R. and Cao, Yiqi and Yang, Min and Zhang, Baiyu (2021) UV Stimulated Manganese Dioxide for the Persulfate Catalytic Degradation of Bisphenol A. Catalysts, 11 (4). ISSN 2073-4344

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One of the most commonly produced industrial chemicals worldwide, bisphenol A (BPA), is used as a precursor in plastics, resins, paints, and many other materials. It has been proved that BPA can cause long-term adverse effects on ecosystems and human health due to its toxicity as an endocrine disruptor. In this study, we developed an integrated MnO2/UV/persulfate (PS) process for use in BPA photocatalytic degradation from water and examined the reaction mechanisms, degradation pathways, and toxicity reduction. Comparative tests using MnO2, PS, UV, UV/MnO2, MnO2/PS, and UV/PS processes were conducted under the same conditions to investigate the mechanism of BPA catalytic degradation by the proposed MnO2/UV/PS process. The best performance was observed in the MnO2/UV/PS process in which BPA was completely removed in 30 min with a reduction rate of over 90% for total organic carbon after 2 h. This process also showed a stable removal efficiency with a large variation of pH levels (3.6 to 10.0). Kinetic analysis suggested that 1O2 and SO4 �

Item Type: Article
URI: http://research.library.mun.ca/id/eprint/15358
Item ID: 15358
Additional Information: Memorial University Open Access Author's Fund
Keywords: BPA, UV stimulated MnO2, photocatalytic degradation, synergistic effect, pathways, toxicity
Department(s): Engineering and Applied Science, Faculty of
Date: 16 April 2021
Date Type: Publication
Digital Object Identifier (DOI): https://doi.org/10.3390/catal11040502
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