3D MnO2 hollow microspheres ozone-catalysis coupled with flat-plate membrane filtration for continuous removal of organic pollutants: Efficient heterogeneous catalytic system and membrane fouling control

Zhuoyan He; Dehua Xia; Yajing Huang; Xiuqin Tan; Chun He; Lingling Hu; Huanjunwa He; Jiawei Zeng; Wenjun Xu; Dong Shu

doi:10.1016/j.jhazmat.2017.11.024

3D MnO₂ hollow microspheres ozone-catalysis coupled with flat-plate membrane filtration for continuous removal of organic pollutants: Efficient heterogeneous catalytic system and membrane fouling control

J Hazard Mater. 2018 Feb 15:344:1198-1208. doi: 10.1016/j.jhazmat.2017.11.024. Epub 2017 Nov 14.

Authors

Zhuoyan He¹, Dehua Xia¹, Yajing Huang¹, Xiuqin Tan¹, Chun He², Lingling Hu¹, Huanjunwa He¹, Jiawei Zeng¹, Wenjun Xu¹, Dong Shu³

Affiliations

¹ School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
² School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China. Electronic address: hechun@mail.sysu.edu.cn.
³ Key Lab of Technology on Electrochemical Energy Storage and Power Generation in Guangdong Universities, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, China. Electronic address: dshu@scnu.edu.cn.

PMID: 29162299
DOI: 10.1016/j.jhazmat.2017.11.024

Abstract

A heterogeneous catalytic ozonation/membrane filtration (HCOMF) system was fabricated by integrating a flat-plate polyvinylidene fluoride (PVDF) membrane module along with a slurry catalytic ozonation reactor. The performance and catalytic activity of HCOMF was evaluated for degradation of model wastewater containing bisphenol A (BPA) and humid acid (HA) under different permeation flux in long-term continuous experiments. The membrane fouling was investigated by trans-membranous pressure (TMP), membrane filtration resistance, scanning electronic microscopy (SEM), and fluorescence spectra. The results showed that HCOMF system exhibited an excellent and stable catalytic activity in long-term continuous experiments owning to integration of 3D MnO₂ hollow microsphere ozone-catalysis with flat-plate membrane filtration. The TMP of HCOMF system didn't increase significantly, and the membrane resistance R_p and R_c declined from 4% and 16% to 1% and 4%, respectively, thus, the membrane fouling of HCOMF system was mitigated compared to MF system. The mitigation of membrane fouling in HCOMF system was attributed to the increase of hydrophilicity of membrane surface and change of HA fractions.

Keywords: Bisphenol A; Catalytic ozonation; Humic acid; Membrane filtration; Membrane fouling.