Abstract
AbstractBACKGROUNDThis study investigates the adsorption of methylene blue (MB) and malachite green (MG) onto a novel biosorbent. Rapid industrialization pollutes water resources, causing serious environmental problems. Physical and chemical treatments were performed for biosorbent modification.RESULTSIn the present work, nano (n)TiO2 was inserted into chitosan (Cts)‐epichlorohydrin (ECH)‐plum kernel shell (PKS) and the final product was characterized by various modern techniques such as Fourier transform infrared, X‐ray diffraction, scanning and transmission electron microscopy and thermogravimetric analysis. Under optimized conditions, the maximum adsorption capacities of MB and MG by Cht/PKS/nTiO2‐ECH (termed nTiO2‐Composite) determined by the Langmuir model were 86.96 and 108.70 mg g−1, respectively. Thermodynamic parameters such as ΔG°, ΔH°, ΔS° and Ea were calculated, confirming the interaction of dyes with nTiO2‐Composite as exothermic and spontaneous.CONCLUSIONSThis study shows that the newly synthesized nTiO2‐Composite has a very high performance in dye removal. © 2021 Society of Chemical Industry (SCI).
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