Kinetic and adsorptive characterization of biochar in metal ions removal

D. Kołodyńska, R. Wnetrzak, J. J. Leahy, M. H.B. Hayes, W. Kwapiński, Z. Hubicki

Research output: Contribution to journalArticlepeer-review

Abstract

Kinetic and adsorption studies on the removal of metal ions such as Cu(II), Zn(II), Cd(II) and Pb(II) ions in the biochar (BC) samples have been carried out. The effects of several experimental parameters have been investigated using the batch adsorption technique at different temperature. The effectiveness of Cu(II), Zn(II), Cd(II) and Pb(II) ions removal increases with the increasing initial concentration of biochar and metal ion, pH as well as phase contact time. The maximum adsorption was found in the pH range 5.0-6.0. The kinetics of adsorption was found to be pseudo second order with intraparticle diffusion as one of the rate determining steps. Adsorption studies were also performed at different temperatures and modelled with the Langmuir and Freundlich adsorption isotherms.

Original languageEnglish
Pages (from-to)295-305
Number of pages11
JournalChemical Engineering Journal
Volume197
DOIs
Publication statusPublished - 15 Jul 2012

Keywords

  • Biochar
  • Isotherms
  • Kinetics
  • Metal
  • Waste water treatment

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