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  • Title: Fabricated and functionalized magnetite/phenylenediamine/cellulose acetate nanocomposite for adsorptive removal of methylene blue.
    Author: Mahmoud ME, Abdelwahab MS.
    Journal: Int J Biol Macromol; 2019 May 01; 128():196-203. PubMed ID: 30682477.
    Abstract:
    The industrial revolution in textile and dying process is moving with huge steps, but the treatment of produced wastewater from this industry is a huge dilemma. This work demonstrates the preparation and utilization of cellulose acetate (CA) blended with Fe3O4 already chemically modified with O-phenylenediamine (PDA) to prepare a novel magnetic Fe3O4/PDA/CA nanocomposite. This nanomaterial was aimed to use in the removal of methylene blue (MB) dye from water. The adsorption process was conducted using a batch technique and the removal process was evaluated under various experimental conditions. From this study, it was found that the values were increased from 55.8% to 88.54%, 45.5% to 84.8% and 42.56% to 76.45% by the increase of from pH 1 to 7, respectively using 10, 50 and 100 mg·L-1. The pseudo-second-order was found to be the most fitted model to confirm that the adsorption reaction is related to a chemisorption process between the Fe3O4/PDA/CA nanocomposite and MB dye. The Langmuir and Freundlich models were also found to best-fitted models to reveal the formation of monolayer and multilayer of MB over Fe3O4/PDA/CA nanocomposite in a chemical process. The thermodynamic parameters confirm that this type of reaction is spontaneous and exothermic reaction.
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