Abstract
Objectives: To present an overview on various extraction systems used in treatment of textile wastewater. Methods: Google Scholar database was used to collect literature on liquid-liquid extraction systems in treatment of textile wastewater between 2000 and 2021. Findings: Even though a variety of methods are available for treatment of textile wastewater, certain methods remain neglected without much attention. One such method is liquid-liquid extraction-based systems. Hence, the manuscript presented an overview on applications of liquid-liquid extraction systems in treatment of textile wastewater. Novelty: Wastewater treatment is most important in today’s life because of excess urbanization and industrialization. In developing countries, tonnes of wastewater is discharged without prior treatment. Hence, liquidliquid extraction could be a novel method for treatment of textile wastewater. Keywords: Wastewater; Liquidliquid extraction; Liquid membrane; Cloud point extraction; Reverse micellar extraction
Highlights
After the advent of chemical processing industries on earth, they serve as the highest polluter of clean water
The results showed that the optimum conditions for the dye removal for various oils were at a pH of 13 and a temperature of 55 ◦C, except for canola oil that produced the highest dye removal efficiency at pH of 7
The presented review focused on various extraction systems used in wastewater treatment
Summary
After the advent of chemical processing industries on earth, they serve as the highest polluter of clean water. The conventional wastewater treatment methods include oxidation, adsorption, extraction, electrolysis, membrane separation, etc. The methods have their own merits and demerits [4]. When compared with the methods available in the literature, the solvent extraction method has advantages in terms of efficiency and simplicity of the process design [5]. Liquid-liquid or solvent Low cost, low energy consumption, variety of Emulsification may occur, effluent extraction solvents, available easy to scale-up must be treated. Supported liquid mem- Minimal loss of extractant, simple operation, less Emulsification may occur brane energy wastage, ease of scale-up, cheap. The present review covers the application of solvent extraction systems in treatment of textile wastewater
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