Abstract
A biosorbent was prepared by coating the fibrous network of loofa sponge (Luffa cylindrica) with a thin film of calcium alginate. Alginate-coated loofa sponge removed Cd(II) rapidly, reaching equilibrium loading of 124 mg g−1 in 30 min. Seventy % of equilibrium uptake was achieved in 10 min. In contrast, it took 240 min for alginate beads to reach a loading equilibrium of 88 mg g−1 under identical conditions. The biosorption behaviour followed the Langmuir adsorption isotherm and the ACLS biosorbent was shown to be highly effective in removing Cd(II) from a 10 mg l−1 solution in a continuous flow fixed-bed column bioreactor.
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Iqbal, M., Edyvean, R. Alginate coated loofa sponge discs for the removal of cadmium from aqueous solutions. Biotechnology Letters 26, 165–169 (2004). https://doi.org/10.1023/B:BILE.0000012899.76157.19
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DOI: https://doi.org/10.1023/B:BILE.0000012899.76157.19