Preparation of sustainable activated carbon-alginate beads impregnated with ionic liquid for phenol decontamination

Amir Sada Khan, Taleb H. Ibrahim*, Mustafa I. Khamis, Paul Nancarrow, Jibran Iqbal, Inas AlNashef, Nabil Abdel Jabbar, Muhammad Faheem Hassan, Farouq Sabri Mjalli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Powder activated carbon (PAC), derived from calligonum pollygonides, was successfully modified with the ionic liquid (IL) trihexyltetradecylphosphonium bromide ([PC6C6C6C14][Br]) in the presence of sodium alginate and characterized using SEM, FTIR and TGA. PAC, granular AC (GAC), AC-alginate and AC-Alg-IL bead were assessed for the removal of phenol from aqueous media via batch adsorption. Both PAC and AC-Alg-IL beads displayed high adsorption capacities, 123 mg/g and 78 mg/g, respectively, under optimized conditions. In contrast, GAC gave a much lower adsorption capacity than AC-ALG-IL beads, indicating that AC-ALG-IL beads are superior as potential adsorbents for this industrial application. Theoretical studies showed that the pseudo-second-order kinetic and Freundlich isotherm models were suitable to describe the adsorption process. The interaction between phenol and AC-Alg-IL beads was analyzed using the conductor-like screening model for realistic solvents (COSMO-RS). It has been concluded that AC-Alg-IL beads can be used as an efficient adsorbent for phenol and other organic compounds.

Original languageEnglish
Article number128899
JournalJournal of Cleaner Production
Publication statusPublished - Oct 25 2021


  • Activated carbon
  • Activated carbon-ionic liquid composite
  • Ionic liquids
  • Phenol

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Strategy and Management
  • Industrial and Manufacturing Engineering


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