| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 594393 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2011 | 7 Pages |
A novel hybrid process combining β-MnO2 nanowires oxidation and microfiltration was adopted to remove bisphenol A (BPA), an endocrine disrupting chemical (EDC) in the aquatic environment. The β-MnO2 nanowires synthesized via a facile hydrothermal method were characterized by X-ray diffraction, transmission electron microscopy, field-emission scanning electron microscope, and nitrogen sorption. It was demonstrated that β-MnO2 nanowires can degrade BPA effectively. Investigation on operation parameters indicated that oxidation of BPA using β-MnO2 nanowires was evidently dependent on pH, while humic acid and coexisting metal ions such as Ca2+, Mg2+, and Mn2+ induced suppressive effects. After oxidation, a crossflow microfiltration process was conducted to efficiently separate and recover the β-MnO2 nanowires from treated water. Membrane fouling study showed that the as-synthesized β-MnO2 nanowires possess excellent mechanical stability and was able to retain the 1D structure with high aspect ratios after reaction, thus significantly reducing membrane pore blocking in the microfiltration process.
Graphical abstractA novel hybrid process combining β-MnO2 nanowires oxidation and microfiltration was adopted to remove bisphenol A (BPA).Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A hybrid process combining oxidation and microfiltration was adopted to remove BPA. ► The β-MnO2 nanowires possess excellent mechanical strength and separability. ► Membrane fouling mechanism indicates the life of the membrane could be extended.
