Abstract
Abstract A new adsorbent [chiFer(III)] for boron recovery from seawater was prepared using chitosan and iron(III) hydroxide. Experiments were carried out in a column system. Seawater samples were collected from the Mediterranean Sea off the coast of Vilanova i la Geltru, Spain (coordinates: 41.18; 1.75). Several adsorption–desorption cycles were performed to evaluate the efficiency of the adsorbent, and a desorption step was carried out using MilliQ-water of pH 12 (0.01 M NaOH solution). The molar ratio between the mass of adsorbed boron in the five consecutive cycles and the mass of iron(III) hydroxide present in the adsorbent beads was 10.7 mmolB· ( mol Fe ( OH ) 3 ) - 1 . The experimental results were evaluated using the Thomas, Yoon and Nelson, and Bohart–Adams models, which fitted the experimental data adequately. The adsorbent was characterized by SEM-EDX analyses and BET surface; porosity studies confirmed that the chiFer(III) composite is a mesoporous material.
Published Version
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