Metal organic framework UiO-66 incorporated ultrafiltration membranes for simultaneous natural organic matter and heavy metal ions removal

In this work, a new type of UiO-66 incorporated polysulfone (PSf) ultrafiltration (UF) membranes was fabricated to enhance antifouling properties and heavy metal ions removal efficiency. The UF membranes incorporating different loadings of the UiO-66 filler were prepared via the classical phase inve...

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Published inEnvironmental research Vol. 208; p. 112651
Main Authors Wang, Yi, Li, Daxue, Li, Jian, Li, Jun, Fan, Mao, Han, Mengwei, Liu, Zequn, Li, Zhanguo, Kong, Fanxin
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier Inc 15.05.2022
Subjects
Heavy metal ions removal
Humic acid
Ions
Membranes, Artificial
Metal-Organic Frameworks
Metals, Heavy
Phthalic Acids
UiO-66
Ultrafiltration
Ultrafiltration membranes
UiO-66
Heavy metal ions removal
Humic acid
Ultrafiltration membranes
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Summary:In this work, a new type of UiO-66 incorporated polysulfone (PSf) ultrafiltration (UF) membranes was fabricated to enhance antifouling properties and heavy metal ions removal efficiency. The UF membranes incorporating different loadings of the UiO-66 filler were prepared via the classical phase inversion process. These membranes unveiled enhanced hydrophilicity, porosity, water uptake, zeta potential, mechanical strength, permeability, and HA removal ratios due to the incorporation of hydrophilic UiO-66 fillers. Particularly, HA rejection ratios were observed to be approximately 93% for all the modified membranes, which was attributed to electrostatic repulsion interactions between the hydrophilic groups of HA and UiO-66. Moreover, the antifouling abilities of the modified membranes were evaluated and found to be much better with a high flux recovery ratio (FRR) of about 88% when compared to the blank PSf membrane (only around 34%). Moreover, the UiO-66 incorporated membranes were highly-effective in the removal of contaminants like heavy metal ions (Sr2+, Pb2+, Cd2+, and Cr6+) and HA at the same time. Overall, the PSf UF membranes incorporating UiO-66 opened up a new avenue to enhance the membrane hydrophilicity, permeability, antifouling properties as well as heavy metal ions removal abilities. [Display omitted]
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ISSN:0013-9351
1096-0953
DOI:10.1016/j.envres.2021.112651