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Issue
Korean Journal of Chemical Engineering,
Vol.32, No.3, 446-457, 2015
Comparative kinetic study of functionalized carbon nanotubes and magnetic biochar for removal of Cd2+ ions from wastewater
Ruthiraan M, Mubarak NM, Thines RK, Abdullah EC, Sahu JN, Jayakumar NS, Ganesan P
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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[Cited By]
  1. Li G, Feng Y, Zhu W, Zhang X, Korean Journal of Chemical Engineering, 32(10), 2109, 2015
  2. Tang C, Peng J, Li X, Zhai Z, Gao H, Bai W, Jiang N, Liao Y, Korean Journal of Chemical Engineering, 33(1), 99, 2016
  3. Dehghani MH, Mostofi M, Alimohammadi M, McKay G, Yetilmezsoy K, Albadarin AB, Heibati B, AlGhouti M, Mubarak NM, Sahu JN, Journal of Industrial and Engineering Chemistry, 35, 63, 2016
  4. Park SH, Cho HJ, Ryu C, Park YK, Journal of Industrial and Engineering Chemistry, 36, 314, 2016
  5. Lee EH, Park RS, Kim H, Park SH, Jung SC, Jeon JK, Kim SC, Park YK, Journal of Industrial and Engineering Chemistry, 37, 18, 2016
  6. Cha JS, Park SH, Jung SC, Ryu C, Jeon JK, Shin MC, Park YK, Journal of Industrial and Engineering Chemistry, 40, 1, 2016
  7. Lee H, Kim YM, Lee IG, Jeon JK, Jung SC, Chung JD, Choi WG, Park YK, Korean Journal of Chemical Engineering, 33(12), 3299, 2016
  8. Abedi A, Taleghani HG, Ghorbani M, Kenari HS, Korean Journal of Chemical Engineering, 36(1), 37, 2019
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