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

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.