Effect of temperature and pH on the biosorption of ammonium onto Posidonia oceanica fibers: Equilibrium, and kinetic modeling studies

Mohamed Ali Wahab*, Salah Jellali, Naceur Jedidi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


In the present study, the effects of temperature and pH on ammonium biosorption onto Posidonia oceanica fibers were investigated. The results showed that the ammonium biosorption onto these fibers occurred for a wide pH range and the adsorption capacity of these fibers increased with increasing temperature. The modeling studies showed that the ammonium biosorption was well described by the pseudo-second-order model, predicting therefore chemisorption interactions-type at earlier stages and intraparticle diffusion at later stages. The ammonium biosorption was governed by film diffusion process at various temperatures. Besides, equilibrium data were very well represented by Langmuir isotherm, which confirmed the mono-layer coverage. The use of P. oceanica fibers 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)8606-8615
Number of pages10
JournalBioresource Technology
Issue number22
Publication statusPublished - Nov 2010
Externally publishedYes


  • Ammonium
  • Biosorption
  • PH
  • Posidonia oceanica fibers
  • Temperature

ASJC Scopus subject areas

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

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