Recent advances in dye removal from wastewater by membrane technology: a review

Dye contamination of wastewater has become one of the most critical environmental problems these days. The most critical sources of dyes in wastewater are from industries such as textile factories, food, paper and printing products and vehicles productions. There are various techniques for the removal of dyes from wastewater such as adsorption, oxidation process, photocatalyst, biological decolorization and membrane separation technology. In this paper, the recent advances in the removal of dyes from wastewater by membrane technology as one of the most promising and effective water treatment methods have been reviewed. This review paper covers published articles mostly from 2000 to 2020. It is evident from literature survey articles that nanofiltration (NF) is the most studied type of membrane for the elimination of dyes from wastewater.