biostudies-literatureLiang LNatural Science Foundation of Zhejiang ProvinceNational Natural Science Foundation of ChinaState Key Laboratory of Pollution Control and Resource Reuse32671-32677https://www.ebi.ac.uk/biostudies/studies/S-EPMC9056616biostudies-literatureUnknown10(54)The effect of a weak magnetic field (WMF) on the removal of reactive brilliant red X-3B (X-3B) by zero-valent iron (ZVI)/H₂O₂ was studied. The optimum conditions for the removal of X-3B by the ZVI/H₂O₂/WMF system were as follows: pH = 4.0, X-3B was 50 mg L^-1, H₂O₂ was 8 mM, and ZVI with particle size of 20 μm was 0.5 g L^-1. The X-3B decolorization rate could reach 99.41% in 10 minutes. The superposed WMF increased the working pH of ZVI from 3.0 to 4.0. The main part of ZVI/H₂O₂ removal kinetics of X-3B followed the zero order rate law. In this study, the removal effect of X-3B by pre-magnetization ZVI was not as good as that of real-time magnetization, but it was better than the reRSC advancesRemoval of reactive brilliant red X-3B by a weak magnetic field enhanced Fenton-like system with zero-valent iron.PMC905661641807468LY18E080018PCRRF18021Wang QZhang YWu QLiang LCheng LMeng XXue YfalseRemoval of reactive brilliant red X-3B by a weak magnetic field enhanced Fenton-like system with zero-valent iron.The effect of a weak magnetic field (WMF) on the removal of reactive brilliant red X-3B (X-3B) by zero-valent iron (ZVI)/H₂O₂ was studied. The optimum conditions for the removal of X-3B by the ZVI/H₂O₂/WMF system were as follows: pH = 4.0, X-3B was 50 mg L^-1, H₂O₂ was 8 mM, and ZVI with particle size of 20 μm was 0.5 g L^-1. The X-3B decolorization rate could reach 99.41% in 10 minutes. The superposed WMF increased the working pH of ZVI from 3.0 to 4.0. The main part of ZVI/H₂O₂ removal kinetics of X-3B followed the zero order rate law. In this study, the removal effect of X-3B by pre-magnetization ZVI was not as good as that of real-time magnetization, but it was better than the re2020-01-01T00:00:00Z2020 Sep2025-04-26T04:32:17.889Z2025-04-26T04:32:17.889ZS-EPMC90566163551651610.1039/d0ra03480k