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Journal of Dispersion Science and Technology

Volume 37, Issue 1, 2016

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Kinetics and Equilibrium Models for Sorption of Cu(II) onto a Novel Manganese Nano-adsorbent
Original Articles

Kinetics and Equilibrium Models for Sorption of Cu(II) onto a Novel Manganese Nano-adsorbent

Oluwasogo Adewumi Dadaa*, Folahan Amoo Adekolab & Ezekiel Oluyemi Odebunmic

pages 119-133


The studies of kinetics and equilibrium sorption of Cu(II) were undertaken using nanoscale zerovalent manganese (nZVMn) synthesized by chemical reduction in a single pot system. nZVMn was characterized using scanning electron microscopy, energy dispersive x-ray, and surface area determined by Brunauer–Emmett–Teller. The effect of pH, contact time, adsorbent dose, agitation speed, initial Cu(II) concentrations, temperature, and ionic strength on the sorption of Cu(II) onto nZVMn were investigated in a batch system. The kinetic data followed pseudo-second-order. The mechanism was governed by pore diffusion. The equilibrium sorption data were tested by Freundlich, Langmuir, Temkin, Dubinin–Kaganer–Raduskevich, and Halsey isotherm models. The Langmuir monolayer adsorption capacity (Qmax = 181.818 mg/g) is much greater compared to other nano-adsorbents used in sorption of Cu(II). The thermodynamic parameters (ΔH0, ΔS0, ΔG0) revealed a feasible, spontaneous, and endothermic adsorption process. nZVMn has a great potential for effective removal of copper (II) in aqueous solution.


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  • Received: 22 Jan 2015
  • Accepted: 23 Mar 2015
  • Accepted author version posted online: 30 Apr 2015

Author affiliations

  • a Department of Physical Sciences, Industrial Chemistry Programme, Landmark University, Omu-Aran, Nigeria
  • b Department of Industrial Chemistry, University of Ilorin, Ilorin, Nigeria
  • c Department of Chemistry, University of Ilorin, Ilorin, Nigeria

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  • 2014 Impact Factor: 0.795, ©2015 Thomson Reuters, 2014 Journal Citation Reports®

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