1
Textile Engineering Department, Amirkabir University of Technology
2
Institute of Nanoscience and Nanotechnology, University of Kashan
3
Department of Environmental Research, Institute for Color Science and Technology
Abstract
The purpose of this work is to investigate the performance of nanofiltration membrane for separation of acid dyes. Nanomembranes have been developed by UV photografting technique. Acrylic acid was used for the modification of polysulfone ultrafiltration membrane that prepared via wet phase inversion method. The modified membrane characteristics were measured and the most suitable nanofiltration membrane was chosen for treatment of dye effluents. It was observed that selected UV-photografted membrane showed acceptable performance both in terms of flux and rejection. Acid dye retention was between 86 and 99.7% and hydraulic permeability was 7.6 L/m2 h bar. It was observed that increase of either dye molecular weight or dye charge leads to improve of dye separation that confirm the effectiveness of sieving and Donnan repulsion mechanism, respectively, in nanofiltration membranes. The influence of pH on the performance of membrane in terms of permeability and dye retention was established. It was found that by changing the pH (3, 6 and 9), membrane surface and dye have different behaviors that influence the final performance of selected nanomembrane. According to results, pH=9 of dye bath provides the best condition for dye separation.
Amini, M., Arami, M., Akbari, A., & Mahmoodi, N. (2008). Preparation of Nanofiltration Membranes via UV Photo-grafting Technique for Separation of Acid Dyes at Different pH Values. Journal of Color Science and Technology, 2(4), 237-247.
MLA
M. Amini; M. Arami; A. Akbari; N.M. Mahmoodi. "Preparation of Nanofiltration Membranes via UV Photo-grafting Technique for Separation of Acid Dyes at Different pH Values". Journal of Color Science and Technology, 2, 4, 2008, 237-247.
HARVARD
Amini, M., Arami, M., Akbari, A., Mahmoodi, N. (2008). 'Preparation of Nanofiltration Membranes via UV Photo-grafting Technique for Separation of Acid Dyes at Different pH Values', Journal of Color Science and Technology, 2(4), pp. 237-247.
VANCOUVER
Amini, M., Arami, M., Akbari, A., Mahmoodi, N. Preparation of Nanofiltration Membranes via UV Photo-grafting Technique for Separation of Acid Dyes at Different pH Values. Journal of Color Science and Technology, 2008; 2(4): 237-247.
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