Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (4): 20220695.doi: 10.7503/cjcu20220695

• Polymer Chemistry • Previous Articles     Next Articles

Carboxyl Functionalized Microfiltration Membrane PSF-g-PMAA: Preparation, Rejection and Removal Properties for Triazine Herbicides

DU Ruikui(), GAO Baojiao, MEN Jiying   

  1. School of Materials Science and Engineering,North University of China,Taiyuan 030051,China
  • Received:2022-11-05 Online:2023-04-10 Published:2022-12-12
  • Contact: DU Ruikui E-mail:dukui1107@163.com
  • Supported by:
    the National Natural Science Foundation of China(21805249)

Abstract:

A redox surface-initiating system of —NH2/S2O82- was constituted at the interface of amine-based chloromethylated polysulfone(CMPSF) microfiltration membrane by using persulfate. MAA was graft-polymerized on the surface of microfiltration membrane by using the surface-initiating graft-polymerization method, and the grafted microfiltration membrane of PSF-g-PMAA was obtained. The rejection and removing performance of PSF-g-PMAA membrane for the three triazine herbicides(ametryn, prometryn and atrazine) from water was examined by using isothermal adsorption experiments and the permeation experiments. The experimental results show that PSF-g-PMAA membrane has strong removal properties for the three triazine herbicides under the synergy adsorption of electrostatic interaction and hydrogen bond interaction, and the maximum adsorption capacity of PSF-g-PMAA membrane for ametryn can reach up to 0.18 μmol/cm2(41 μg/cm2). Using an injection filter with a membrane area of 1.77 cm2, the rejection rate of PSF-g-PMAA membrane for the solutions of the three triazine herbicides with a concentration of 0.8 mg/L can be closed to 100% under 100 mL of penetrating liquids.

Key words: Grafted-microfiltration membrane, Methacrylic acid, Triazine herbicides, Rejection, Removal

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