Preparation of sustainable activated carbon-alginate beads impregnated with ionic liquid for phenol decontamination. (25th October 2021)

• Record Type: Journal Article
• Authors: Khan, Amir Sada; Ibrahim, Taleb H.; Khamis, Mustafa I.; Nancarrow, Paul; Iqbal, Jibran; AlNashef, Inas; Jabbar, Nabil Abdel; Hassan, Muhammad Faheem; Mjalli, Farouq Sabri
• Is Part Of: Journal of cleaner production. Volume 321(2021)
• Publication Date: 2021-10-25
• Subjects: Activated carbon -- Phenol -- Ionic liquids -- Activated carbon-ionic liquid composite -- COSMO-RS; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2021.128899
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Powder activated carbon (PAC), derived from calligonum pollygonides, was successfully modified with the ionic liquid (IL) trihexyltetradecylphosphonium bromide ([PC6 C6 C6 C14 ][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. Graphical abstract: Image 1 Highlights: AC and AC-alginate beads impregnated with IL were successfully synthesized for phenol adsorption. Phenol adsorption capacities for powder AC and AC-Alg-IL beads were 123 mg/g and 78 mg/g, respectively. Kinetic study concluded that phenol adsorption on both adsorbents fitted well to the PSO kinetic model. COSMO-RS results show that the IL has a strong interaction with phenol.