화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.32, No.3, 446-457, March, 2015
DOI10.1007/s11814-014-0260-7  Export Citation
Comparative kinetic study of functionalized carbon nanotubes and magnetic biochar for removal of Cd2+ ions from wastewater
Manimaran Ruthiraan1, Nabisab Mujawar Mubarak2, 3, †, Raj Kogiladas Thines1, Ezzat Chan Abdullah1, Jaya Narayan Sahu4, Natesan Subramanian Jayakumar3, and Poobalan Ganesan5
  • 1Malaysia - Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, Kuala Lumpur-54100, Malaysia
  • 2Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur-56000, Malaysia
  • 3Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur-50603, Malaysia
  • 4Department of Petroleum and Chemical Engineering, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P. O. Box 2909, Brunei Darussalam
  • 5Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur-50603, Malaysia
E-mail:
We did a comparative study between functionalized multiwall carbon nanotube (FMWCNTs), and magnetic biochar was carried out to determine the most efficient adsorbent to be employed in the Cd2+ ion removal. We optimized parameters such as agitation speed, contact time, pH and adsorbent dosage using design expert vrsion 6.08. The statistical analysis reveals that optimized condition for highest removal of Cd2+ are at pH 5.0, with dosage 1.0 g, agitation speed and contact time of 100 rpm and 90 minutes, respectively. For the initial concentration of 10mg/l, the removal efficiency of Cd2+ using FMWCNTs was 90% and and 82% of magnetic biochar. The maximum Cd2+ adsorption capacities of both FMWCNTs and magnetic biochar were calculated: 83.33mg/g and 62.5mg/g. The Langmuir and Freundlich constants for FMWCNTs were 0.056 L/mg and 13.613 L/mg, while 0.098 L/mg and 25.204 L/mg for magnetic biochar. The statistical analysis proved that FMWCNTs have better adsorption capacity compared to magnetic biochar and both models obeyed the pseudo-second-order.
Keywords:MWCNT;Cadmium;Heavy Metal;Adsorption;Functionalization;Magnetic Biochar
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