DOI QR코드

DOI QR Code

Performance of fouled NF membrane as used for textile dyeing wastewater

  • Abdel-Fatah, Mona A. (National Research Center, Chemical Engineering and Pilot Plant Department) ;
  • Khater, E.M.H. (National Research Center, Chemical Engineering and Pilot Plant Department) ;
  • Hafez, A.I. (National Research Center, Chemical Engineering and Pilot Plant Department) ;
  • Shaaban, A.F. (National Research Center, Chemical Engineering and Pilot Plant Department)
  • 투고 : 2018.10.14
  • 심사 : 2020.01.10
  • 발행 : 2020.03.25

초록

The fouling of Nanofiltration membrane (NF) was examined using wastewater containing reactive black dye RB5 of 1500 Pt/Co color concentrations with 16890 mg/l TDS collected from El-alamia Company for Dying and Weaving in Egypt. The NF-unit was operated at constant pressure of 10 bars, temperature of 25℃, and flowrate of 420 L/min. SEM, EDX, and FTIR were used for fouling characterization. Using the ROIFA-4 program, the total inorganic fouling load was 1.07 mM/kg present as 49.3% Carbonates, 10.1% Sulfates, 37.2% Silicates, 37.2% Phosphates, and 0.93% Iron oxides. The permeate flux, recovery, salt rejection and mass transfer coefficients of the dye molecules were reduced significantly after fouling. The results clearly demonstrate that the fouling had detrimental effect on membrane performance in dye removal, as indicated by a sharp decrease in permeate flux and dye recovery 68%. The dye mass transfer coefficient was dropped dramatically by 34%, and the salt permeability increased by 14%. In this study, all the properties of the membrane used and the fouling that caused its poor condition are identified. Another study was conducted to regeneration fouled membrane again by chemical methods in another article (Abdel-Fatah et al. 2017).

키워드

참고문헌

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