Volume 14 Issue 4
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Article Navigation >  Water Science and Engineering  > 2021  >  14(4): 295-303
Habib Etemadi, Hamidreza Qazvini, Elham Shokri. 2021: Effect of coagulation treatment on antifouling properties of PVC nanocomposite membrane in a submerged membrane system for water treatment. Water Science and Engineering, 14(4): 295-303. doi: 10.1016/j.wse.2021.08.010
Citation: Habib Etemadi, Hamidreza Qazvini, Elham Shokri. 2021: Effect of coagulation treatment on antifouling properties of PVC nanocomposite membrane in a submerged membrane system for water treatment. Water Science and Engineering, 14(4): 295-303. doi: 10.1016/j.wse.2021.08.010
shu

Effect of coagulation treatment on antifouling properties of PVC nanocomposite membrane in a submerged membrane system for water treatment

doi: 10.1016/j.wse.2021.08.010

  • a Department of Polymer Science and Engineering, University of Bonab, Bonab 5551761167, Iran;

  • b Department of Chemical Engineering, University of Bonab, Bonab 5551761167, Iran

Funds:

This work was supported by the project funded by University of Bonab, Iran (Grant No. 98/1041).

  • Received Date: 2020-07-13
  • Accepted Date: 2021-07-23
    • Available Online: 2021-12-15
    Abstract
  • A submerged membrane system was used in this work to investigate the effect of the polyaluminum chloride (PAC) coagulant on the antifouling performance of the polyvinyl chloride/alumina (PVC/Al2O3) nanocomposite membrane. The prepared nanocomposite membranes were characterized with field emission scanning electron microscopy (FE-SEM), atomic force microscopy, contact angle, porosity measurement, and pure water flux. The results revealed that the membrane containing Al2O3 nanoparticles (the mass ratio of PVC to Al2O3 was 98.5/1.5) had a higher hydrophilicity, porosity, and pure water flux than other membranes. The FE-SEM images showed that when Al2O3 nanoparticles were present in the PVC membrane, large pores and macrovoids formed on the surface and cross-section of the membrane. The fouling behavior of membranes was investigated through the filtration of humic acid (HA) solution with and without the PAC coagulant. Without PAC addition, the PVC/Al2O3 membrane significantly decreased the irreversible fouling ratio from 60.7% to 19.4% and showed a high HA removal efficiency of approximately 90.5%. The Hermia model confirmed that the cake formation mechanism best described the experimental data for the neat PVC and nanocomposite membranes with the presence and absence of the PAC coagulant. This confirms that the PAC coagulant can significantly mitigate fouling and improve HA removal in the submerged membrane system.

     

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