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Mn(III)-mediated bisphenol a degradation: Mechanisms and products by Yanchen Sun; Chao Wang; Amanda L. May; Gao Chen; Yongchao Yin; Yongchao Xie; Ashley M. Lato; Jeongdae Im; Frank E. Löffler is a Environmental Science article available to read on EtoBox.

What is Mn(III)-mediated bisphenol a degradation: Mechanisms and products about?

Bisphenol A (BPA) is a high production volume chemical with potential estrogenic effects susceptible to abiotic degradation by MnO2. BPA transformation products and reaction mechanisms with MnO2 have been investigated, but detailed process understanding of Mn(III)-mediated degradation has not been attained. Rapid consumption of BPA occurred in batch reaction vessels with 1 mM Mn(III) and 63.9 ± 0.7% of 1.76 ± 0.02 μmol BPA was degraded in 1 hour at circumneutral pH. BPA was consumed at 1.86 ± 0.09-fold higher rates in vessels with synthetic MnO2 comprising approximately 13 mol% surface-associated Mn(III) versus surface-Mn(III)-free MnO2, and 10–35% of BPA transformation could be attributed to Mn(III) during the initial 10-min reaction phase. High-resolution tandem mass spectrometry (HRMS/MS) analysis detected eight transformation intermediates in reactions with Mn(III), and quantum calculations proposed 14 BPA degradation products, nine of which had not been observed during MnO2-mediated BPA degradation, suggesting mechanistic differences between Mn(III)- versus MnO2-mediated BPA degradation. The findings demonstrate that both Mn(III) and Mn(IV) can effectively degrade BPA and indi

Who reads Mn(III)-mediated bisphenol a degradation: Mechanisms and products?

Author

Yanchen Sun; Chao Wang; Amanda L. May; Gao Chen; Yongchao Yin; Yongchao Xie; Ashley M. Lato; Jeongdae Im; Frank E. Löffler

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)