A Short Review on the Removal of Rhodamine B Dye Using Agricultural Waste-Based Adsorbents

Abstract

Among the various methods available for wastewater remediation, the adsorption technique remains one of the most preferred choices worldwide. This is because the process is effective and economically feasible. Over the years, the abundance and availability of agricultural waste products have encouraged their application in pure or modified forms as catalysts in environmental remediation. Such agricultural wastes are carbonaceous and lignocellulosic in nature with numerous surface functional groups which makes them favorable for use as adsorbents for the removal of various pollutants. Rhodamine B (RhB) dye is a common organic dye in industrial wastewaters but could be artificially removed via adsorption. In this article, the use of agricultural-waste based adsorbents for the removal of RhB dye from aqueous solution over the last decade have been reviewed.

Various Adsorbents for Removal of Rhodamine B Dye: A Review

“…Agricultural wastes. Researchers have used various biomass-based adsorbents to remove different dyes during the last ten years, including RhB dye from aquatic environments [50][51]. Several agricultural wastes and biomasses include Artocarpus odoratissimus, coffee beans, banana, orange, lignocellulosic, pomegranate, potato, and cucumber peels [50][51][52][53][54][55][56].…”

“…In addition, zeolites from Brazilian coal fiery remains have been utilized as a successful low-cost adsorbent in numerous applications. Zeolites have lasting negative charges in their precious stone structures, which empower them to be adjusted by cationic surfactants, such as hexadecyltrimethylammonium [51]. Furthermore, the alteration of the zeolitic fabric improves the expulsion of natural and anionic poisons from effluents [65].…”

“…Inorganic adsorbents such as zeolites, clays, and perlite are natural, low-cost, abundant, and sustainable materials used in the adsorption process to remove dyes [51,71]. Zeolites naturally occur as porous aluminosilicates consisting of different structures linked together by a shared oxygen atom.…”

“…The modern enabling techniques for water quality monitoring utilize smart sensors interfaced with modern controllers and interconnected using wireless standards to monitor water quality. Several examples of widely used sensors are smart [92], optical [93], and wireless [51] sensors.…”

Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

“…In general, AC is the most widely used sorbent for both environmental and industrial applications (40). This is due to its large surface area and ability to adsorb a wide range of organic compounds (41). Furthermore, any carbonaceous material of plant or animal origin with high carbon concentration can be used for the production of AC (42).…”