European Journal of Chemistry 2019, 10(2), 156-165 | doi: | Get rights and content

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Application of calixpyrrole modified silica for the removal of 4-chlorophenol from aqueous media

Ismail Ibrahim Abbas (1,*) orcid , Bassem Mohamad Riad El Hamaoui (2) orcid , Hilal Mohamad Jamal Najmeddine (3) orcid

(1) Laboratory of Analysis of Organic Compounds, Faculty of Sciences I, Lebanese University, Hadath, Beirut, 1500, Lebanon
(2) Laboratory of Applied Chemistry, Faculty of Science III, Lebanese University, Tripoli, 1300, Lebanon
(3) Department of Chemistry, Faculty of Science, Beirut Arab University, Tripoli, 1300, Lebanon
(*) Corresponding Author

Received: 09 Mar 2019 | Revised: 18 Apr 2019 | Accepted: 15 May 2019 | Published: 30 Jun 2019 | Issue Date: June 2019


In this research, calixpyrrole modified silica (III) was synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA) and scanning electron microscope (SEM) techniques. The synthesized material was used as an extractant for the removal of 4-chlorophenol from aqueous solution. Its efficiency was examined through both batch and column extraction methods. The effects of temperature, pH, initial chlorophenol concentration and mass of the adsorbent were examined using removal efficiencies. Initial concentration and quantity of adsorbent show a noticeable influence on the uptake capacity of the adsorbent. The kinetics and thermodynamics of chlorophenol removal from aqueous media were also investigated. Kinetic studies indicated that the extraction data can be best represented by pseudo second order model. Column extraction data were analyzed through Thomas, Yoon-Nelson and Yan et al. models to calculate kinetic coefficients and maximum sorption capacity of the modified silica (III). The adsorbent silica was regenerated by acid treatment without changing its properties.


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European Journal of Chemistry


Kinetics; Extraction; Chlorophenol; Column studies; Thermodynamics; Calixpyrrole modified silica

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DOI: 10.5155/eurjchem.10.2.156-165.1846

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Lebanese University, Hadath, Beirut, 1500, Lebanon


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How to cite

Abbas, I.; El Hamaoui, B.; Najmeddine, H. Eur. J. Chem. 2019, 10(2), 156-165. doi:10.5155/eurjchem.10.2.156-165.1846
Abbas, I.; El Hamaoui, B.; Najmeddine, H. Application of calixpyrrole modified silica for the removal of 4-chlorophenol from aqueous media. Eur. J. Chem. 2019, 10(2), 156-165. doi:10.5155/eurjchem.10.2.156-165.1846
Abbas, I., El Hamaoui, B., & Najmeddine, H. (2019). Application of calixpyrrole modified silica for the removal of 4-chlorophenol from aqueous media. European Journal of Chemistry, 10(2), 156-165. doi:10.5155/eurjchem.10.2.156-165.1846
Abbas, Ismail, Bassem Mohamad Riad El Hamaoui, & Hilal Mohamad Jamal Najmeddine. "Application of calixpyrrole modified silica for the removal of 4-chlorophenol from aqueous media." European Journal of Chemistry [Online], 10.2 (2019): 156-165. Web. 23 Sep. 2023
Abbas, Ismail, El Hamaoui, Bassem, AND Najmeddine, Hilal. "Application of calixpyrrole modified silica for the removal of 4-chlorophenol from aqueous media" European Journal of Chemistry [Online], Volume 10 Number 2 (30 June 2019)

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