The Coupling Use of Weak Magnetic Field and Fe0/H2O2 Process for Bisphenol a Abatement: Influence of Reaction Conditions and Mechanisms

The coupling use of the heterogeneous Fenton-like process (zero-valent iron (Fe0)/H2O2) and weak magnetic field (MWF) for bisphenol A (BPA) abatement was systematically investigated in this study. Though both Fe0/H2O2 WMF-Fe0/H2O2 processes are sensitive to pH, WMF remarkably enhanced BPA removal under pH range 3.0–6.0 by 0.5–9.5 times. characterization Fe0 confirmed role promoting corrosion Fe0. Radicals, rather than Fe intermediates, were responsible degradation. Due presence Cl– as background ions its reactivity towards HO•, reactive chlorine species (RCS, i.e., Cl• Cl2•−) produced considerably contributed In addition, ~37% 54% degraded ascribed RCS 2 100 mM Cl−, respectively. However, 1.9 mg/L ClO3− detected Cl− WMF- process. HCO3− could diminish generation significantly through transforming RCS. concentration decreased 74% 82% with dosing 1 10 HCO3−, results study suggest that is a promising approach removal.