The scarcity of clean and fresh water in some parts of the world, which is exacerbated by man’s activities either through domestic or industrial use, has been an age-old cause of worry. Printing and dyeing wastewater is the aqueous effluent released by factories that operate the dyeing and finishing of wool and silk, among other things. The printing and dyeing wastewater (PDW) contains a high concentration of dyes, salts, and other contaminants. This study is a review of published literature that utilised various technologies for the treatment of PDW. The studied technologies include adsorption, membrane technology, advanced oxidation processes, and biological processes. The strengths as well as the drawbacks of these technologies were studied. It was observed that adsorption, membrane technology, and biological processes recorded a removal efficiency of ˃80%, a rejection rate of ˃90%, and an effective dye degradation rate of ˃96%, respectively. From the study, it was observed that advanced oxidation processes is the most viable technique for PDW treatment due to its simplicity, efficiency, scalability, and from the economic point of view. Future perspectives, such as product recovery from the PDW waste stream, modelling and optimisation of the printing and dyeing processes, and the adoption of zero liquid and waste discharge, were also presented in this study. Finally, PDW treatment technologies should strike a balance between being environmentally friendly, efficient, and cost-effective to achieve robust and sustainable wastewater treatment programs. • In this study, printing and dyeing wastewater treatment technologies were examined. • This wastewater contains a high concentration of dyes, salts, and other contaminants. • Physicochemical processes have several limitations to treat the wastewater. • Adsorption technology can result in dye rejection rates of over 90%. • Advanced oxidation processes was observed to be the most viable treatment technique. 

A review on treatment technologies for printing and dyeing wastewater (PDW)

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Approximately 1 nm-sized artificial tunnels in wrinkled graphene-graphene oxide composite membranes for efficient dye/dye separation and dye desalination

CoNi Layered Double Hydroxide Nanosheets Vertically Grown on Electrodeposited Dendritic Copper Substrates for Supercapacitor Applications

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MOF-Derived Zero-Dimensional Cu3P Nanoparticles Embedded in Carbon Matrices for Electrochemical Hydrogen Evolution