Ultraviolet/persulfate (UV/PS) pretreatment of typical natural organic matter (NOM): Variation of characteristics and control of membrane fouling

Zongping Wang, Ying Wan, Pengchao Xie, Aijiao Zhou, Jiaqi Ding, Jingwen Wang, Li Zhang, Songlin Wang, Tian C Zhang

Research output: Contribution to journalArticle

Abstract

The effects of ultraviolet/persulfate (UV/PS) pretreatment on ultrafiltration (UF) membrane fouling caused by typical natural organic matter (NOM) fractions including humic acid (HA), sodium alginate (SA), and bovine serum albumin (BSA) were investigated. UF membrane fouling during the filtration of different NOM fractions after UV/PS pretreatment was compared through the evaluation of normalized membrane flux decline and membrane fouling reversibility. The fouling mitigation mechanisms were investigated through the characterization of ultraviolet absorbance (UV254), dissolved organic matter, zeta potential, particle size distribution, fluorescence excitation-emission matrix spectra, and fitness of four classic fouling models. Furthermore, the fouled membranes were characterized by Fourier-transform infrared spectroscopy and scanning electron microscopy. The results showed that UV/PS pretreatment significantly alleviated membrane fouling caused by HA, SA, and HA-SA-BSA mixture, and the fouling control performance improved at high PS doses. However, either UV alone or UV/PS pretreatment at low PS dose (10 mg/L) significantly aggravated BSA fouling with the normalized flux at the end of first filtration cycle being 8% and 15%, respectively. The increased particle size of BSA after UV/PS pretreatment was attributed to the formation of aggregates, which mainly accumulated in membrane pores and aggravated membrane fouling. Modeling results suggest that the mitigation of membrane fouling derived from SA and mixed organic fractions was primarily ascribed to the control of cake filtration, while the mitigation of HA fouling was attributed to the declined contribution of standard blocking.

LanguageEnglish (US)
Pages136-147
Number of pages12
JournalChemosphere
Volume214
DOIs
StatePublished - Jan 1 2019

Fingerprint

Membrane fouling
fouling
Biological materials
Humic Substances
Sodium alginate
Fouling
Bovine Serum Albumin
membrane
organic matter
Membranes
alginate
Ultrafiltration
humic acid
serum
sodium
Fluxes
Particle Size
mitigation
ultrafiltration
Zeta potential

Keywords

  • Membrane fouling
  • Natural organic matter (NOM)
  • Sulfate radical (SO[rad])
  • Ultrafiltration (UF)
  • Ultraviolet/persulfate (UV/PS)

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Ultraviolet/persulfate (UV/PS) pretreatment of typical natural organic matter (NOM) : Variation of characteristics and control of membrane fouling. / Wang, Zongping; Wan, Ying; Xie, Pengchao; Zhou, Aijiao; Ding, Jiaqi; Wang, Jingwen; Zhang, Li; Wang, Songlin; Zhang, Tian C.

In: Chemosphere, Vol. 214, 01.01.2019, p. 136-147.

Research output: Contribution to journalArticle

Wang, Zongping ; Wan, Ying ; Xie, Pengchao ; Zhou, Aijiao ; Ding, Jiaqi ; Wang, Jingwen ; Zhang, Li ; Wang, Songlin ; Zhang, Tian C. / Ultraviolet/persulfate (UV/PS) pretreatment of typical natural organic matter (NOM) : Variation of characteristics and control of membrane fouling. In: Chemosphere. 2019 ; Vol. 214. pp. 136-147.
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AU - Wang, Songlin

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