화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.24, 24-33, April, 2015
DOI10.1016/j.jiec.2014.09.005  Export Citation
Microwave assisted multiwall carbon nanotubes enhancing Cd(II) adsorption capacity in aqueous media
N.M. Mubarak1, 2, J.N. Sahu1, 3, †, E.C. Abdullah4, N.S. Jayakumar1, 5, and P. Ganesan6
  • 1Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
  • 2Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, 56000 Kuala Lumpur, Malaysia
  • 3Petroleum and Chemical Engineering Programme Area, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P.O. Box 2909, Brunei Darussalam
  • 4Malaysia–Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia
  • 5, Malaysia
  • 6Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
E-mail:
Novel multiwall carbon nanotubes (MWCNTs) have been successfully synthesized using tubular microwave chemical vapour deposition technique and proved to be an outstanding adsorbent for the removal of Cd(II) from aqueous solution. The effect of process parameters such as pH, MWCNTs dosage, agitation speed and time were investigated. The maximum adsorption capacities of Cd(II) were found to be 88.62 mg/g and a statistical analysis reveals that the optimum conditions for the highest removal (98%) of Cd(II) are at pH 5, MWCNTs dosage 0.1 g, agitation speed and time of 160 rpm and 50 min, respectively with the initial concentration of 10 mg/L. The Langmuir and Freundlich isotherm models match the experimental data very well and adsorption kinetic obeyed pseudo-second order. Our results proved that MWCNTs can be used as an effective Cd(II) adsorbent due to the high adsorption capacity as well as the short adsorption time needed to achieve equilibrium.
Keywords:Microwave;Heavy metal;Adsorption;Separation;MWCNTs;Cadmium
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