Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment

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Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment

Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment

Mona A. Abdel-Fatah1,*, Omar E. Abdel-Salam2, Radwa Z. Abdel-Maoty3

HIGHLIGHTS

  • The aim of this study is the regeneration of fouled nanofiltration membrane.
  • It is used in dying process of textile wastewater treatment.
  • The goal is to increase its lifetime and therefore reduce the expenses.
  • The regeneration of fouled membrane is carried out by chemical treatment.
  • The influence of the chemicals on the used membrane's surface is studied.

ABSTRACT

Textile dye-house industrial processing is considered a major source of considerable chemical pollution as it includes: pretreatment, dyeing, printing, and finishing. This type of industries needs the advanced treatment technology. Nanofiltration membrane is considered one of the most effective technologies. The aim of this study was the regeneration of fouled nanofiltration membrane used in dying process of textile wastewater treatment for increasing its lifetime and therefore reducing the expenses. The regeneration process for the fouled membrane was carried out using chemical treatment method. Different concentrations of sulfuric acid, acetic acid, sodium hydroxide, and EDTA were used for that purpose. The time and temperature varied in each case. Scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and Fourier transform infrared spectroscopy (FTIR) were used to investigate the influence of the chemicals on the used membrane's surface. Complete analysis proceeded to identify the best type of chemical cleaning. The factors affect the success of the cleaning process such as the nature of the foulant, type of cleaning agents, temperature, pH, concentration of the cleaning chemicals, and contact time were also investigated. The characteristics of the cleaned nanofiltration membrane were compared with the virgin and fouled membranes.

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To cite this article: Abdel-Fatah MA, Abdel-Salam OE, Abdel-Maoty RZ. Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment. Journal of Desalination and Water Purification 2017;7:14-22.

To link this article: http://ababilpub.com/download/jdwp7-3/