Ammonium biosorption onto sawdust: FTIR analysis, kinetics and adsorption isotherms modeling

Mohamed Ali Wahab*, Salah Jellali, Naceur Jedidi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

282 Citations (Scopus)


Sawdust, an available and renewable biomass, was investigated as a novel ammonium biosorbent. Biosorption occurred over a pH range of 6-10, reached an equilibrium state within only 20 min, and can be described by a pseudo-second-order model predicting a chemisorption process. Equilibrium data were very well represented by Langmuir isotherm and confirm monolayer coverage. FTIR analysis before and after biosorption of ammonium onto sawdust suggested that the main mechanisms involved in the removal of ammonium might be the ionic exchange and complexation. The use of sawdust presents an interesting option for both tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium), and waste recycling (as a fertilizer and compost).

Original languageEnglish
Pages (from-to)5070-5075
Number of pages6
JournalBioresource Technology
Issue number14
Publication statusPublished - Jul 2010
Externally publishedYes


  • Ammonium
  • Biosorption
  • FTIR
  • Modeling
  • Sawdust

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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