Removal of phosphorus from aqueous solution by Posidonia oceanica fibers using continuous stirring tank reactor

Mohamed Ali Wahab*, Rafik Ben Hassine, Salah Jellali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


The present study aims to develop a new potentially low-cost, sustainable treatment approach to soluble inorganic phosphorus removal from synthetic solutions and secondary wastewater effluents in which a plant waste (Posidonia oceanica fiber: POF) is used for further agronomic benefit. Dynamic flow tests using a continuous stirred tank reactor (CSTR) were carried out to study the effect of initial concentration of phosphorus, amount of adsorbent, feeding flow rate and anions competition. The experimental results showed that the removal efficiency of phosphorus from synthetic solutions is about 80% for 10gL-1 of POF. In addition, the variation of the initial concentration of phosphorus from 8 to 50mgL-1 increased the adsorption capacity from 0.99 to 3.03mgg-1. The use of secondary treated wastewater showed the presence of competition phenomenon between phosphorus and sulphate which could be overcoming with increasing the sorptive surface area and providing more adsorption sites when increasing the adsorbent dosage of POF. Compared with columns studies, this novel CSTR system showed more advantages for the removal of soluble phosphorus as a tertiary treatment of urban secondary effluents with more adsorption efficiency and capacity, in addition to the prospect use of saturated POF with nutriment as fertilizer and compost.

Original languageEnglish
Pages (from-to)577-585
Number of pages9
JournalJournal of Hazardous Materials
Issue number1-2
Publication statusPublished - May 15 2011
Externally publishedYes


  • Adsorption
  • CSTR
  • Phosphorus removal
  • Posidonia oceanica fibers (POF)
  • Tertiary treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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