Adsorption of Lanthanide Ions from an Aqueous Solution in Multicomponent Systems Using Activated Carbon from Banana Peels (Musa Paradisiaca L.)

摘要

Lanthanides in aqueous waste streams have receivedgreat attention due to their ability to pollute the environment. Therefore,efforts have been devoted to adsorbing lanthanides from waste industries. Theevaluation of agro-waste by determining the adsorption efficiency of Ln3+ ionsis an important step in developing a process for Ln3+ removal fromwater systems, as well as a method of isolating Ln3+ ions frommineral ores, such as low-grade bauxite. The adsorption performance of bananapeels (Musa paradisiaca L.) wasevaluated in the removal of Ln3+ ions. In addition, the adsorptionof lanthanide ions from an aqueous solution in a multicomponent system wasstudied using activated carbon from banana peels. The selection of the bestadsorbent was done by the iodine number method, where activated carbon had thehighest iodine absorbance at 572.2 mg/g. The use of activated carbon as anadsorbent for the removal of commercial lanthanide ions from an aqueoussolution was evaluated. The optimum condition in the Ln3+ multicomponentsystem for the adsorption of Y3+, La3+, Ce3+,Nd3+, and Sm3+ ions was determined to be a contact timeof 2.5 h, a pH of 4, and an adsorbent dosage of 100 mg. The present researchfurther supports the possibility of the adsorption of Ln3+ ions fromlow-grade bauxite with adsorption efficiencies of 67.6, 71.0, 65.0, 62.9, and56.6% for Y3+, La3+, Ce3+, Nd3+,and Sm3+, respectively.?