Applications of polyaniline-impregnated silica gel-based nanocomposites in wastewater treatment as an efficient adsorbent of some important organic dyes

Abstract

Abstract Due to a recent lack of clean water as a result of an increasing water demand, new wastewater solutions are required. Many researchers have looked into the removal of organic dyes from wastewater, with adsorption being an easy and effective method for removing organic and inorganic contaminants from contaminated water. Conjugated modified polymers, primarily polyaniline (Pani), have been widely used in the wastewater treatment because of their unique properties, such as easy synthesis, tunable morphology, porous structure, good electrorheological property, biodegradability, and nontoxic nature. Modified surface polymers are more reactive for the removal of dyes from wastewater and have outstanding dye removal capabilities in the wastewater treatment. This review article elaborates on wastewater treatment by utilizing silica gel-impregnated polyaniline nanocomposites as adsorbents. The use of polyaniline-modified silica gel in dye migration behavior to the most suited system for the resolution of co-existing dyes is referred to as the separation of organic dyes from their mixtures. Adsorption of important organic dyes to optimize conditions for efficient organic dye removal and comparison with another commercially available adsorbent. Chemical modification with the introduction of acidic or basic surface functionality could increase cationic and anionic chemical adsorption, as well as charged organic species such as dyes. The carrier is thus obtained with a chelating reagent on the surface of a silica gel after impregnation with polyaniline.