Utilization of Tires Waste-Derived Magnetic-Activated Carbon for the Removal of Hexavalent Chromium from Wastewater |
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| Authors: | Waqas Ahmad Shanif Qaiser Rahman Ullah Badrul Mohamed Jan Michael A. Karakassides Constantinos E. Salmas George Kenanakis Rabia Ikram |
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| Affiliation: | 1.Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan; (W.A.); (S.Q.); (R.U.);2.Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia;3.Department of Materials Science and Engineering, University of Ioannina, GR-45110 Ioannina, Greece; (M.A.K.); (C.E.S.);4.Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, Vasilika Vouton, GR-70013 Heraklion, Crete, Greece; |
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| Abstract: | The present study focuses on fabrication of magnetic activated carbon (M-AC) using tire waste and its potential investigation for adsorption of Cr (VI) from wastewater. The composite material (M-AC) was synthesized by pyrolysis followed by in situ magnetization method, and characterized by FTIR, FESEM, EDX, and XRD analysis. The maximum adsorption of Cr (VI) ion over composite adsorbent was found (~99.5%) to occur at pH 2, sample volume 10 mL, adsorbent dose 100 mg, contact time 30 min. The adsorption process was endothermic, feasible, spontaneous, and was found to follow pseudo second order of the reaction. The Cr ion could be completely desorbed (~99.3%) from the composite adsorbent by using 20 mL of 2 M NaOH solution. The composite adsorbent was regenerated by continuous adsorption and desorption for 5 consecutive cycles by using 10 mL 0.1 M HCl solution. M-AC also performed well in case of tannery wastewater by removing about 97% of Cr (VI). |
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| Keywords: | tire waste hexavalent chromium magnetic activated carbon wastewater treatment tannery wastewater |
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