Sugarcane bagasse decorated by metal (Fe3+/Cu2+) ferrocyanide for effective removal of cesium from aqueous solutions

Abstract

In this work, we convert the biowaste materials (sugarcane bagasse) into wealth materials via combination with metal ferrocyanide through two steps to prepare (SCB-M-FC) composite for cesium removal from aqueous solutions. Firstly, SCB was modified to be amino silane (SCB-NH2) to provide amine binding sites. Secondly, the metal (M = Fe3+or Cu2+) ferrocyanide (FC) nanomaterials grow in situ on the surface of the modified -SCB to yield SCB-M-FC. Various techniques were used to characterize the prepared composite materials before and after the adsorption of cesium. The adsorption behavior of Cs+ by SCB, SCB-NH2, and SCB-M-FC under different conditions was studied and compared. We observed that the SCB-Cu-FC presents the experimental adsorption capacity for Cs+ (126.0 mg/g). Additionally, dynamic system for cleaning cesium from polluted water was also investigated. The excellent selective removal of Cs by SCB-M-FC was escorted by the liberation of K+ and diffusion mechanisms. The SCB-Cu-FC nanocomposite was found to be appropriate for the practical removal of cesium from contaminated aqueous solution.