Adsorption of phenol onto aluminium oxide and zinc oxide: A comparative study with titanium dioxide

• Published in: Separation science and technology Vol. 54; no. 17; pp. 2840 - 2852
• Main Authors: Safwat, Safwat M., Medhat, Mohamed, Abdel-Halim, Hisham
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 22-11-2019; Taylor & Francis Ltd
• Subjects: Adsorbents; Adsorption; Aluminium; Aluminum; Aluminum oxide; Comparative analysis; Comparative studies; Isotherms; kinetics; Oxides; phenol; Phenols; Titanium; Titanium dioxide; Wastewater; Wastewater treatment; Zinc; Zinc oxide; Zinc oxides
• ISSN: 0149-6395; 1520-5754
• DOI: 10.1080/01496395.2018.1549572

This study conducted an investigation of aluminium oxide's and zinc oxide's ability to remove phenol from wastewater through adsorption, and compare of their performance with titanium dioxide. The points of zero charge for the adsorbents were determined. The highest removal efficiencies for aluminium oxide, zinc oxide, and titanium dioxide were 14.7%, 12.2% and 33.5%, respectively. Equilibrium studies demonstrated the possibility of Frendluich isotherm, Temkin isotherm, and Dubinin-Radushkevich isotherm respectively expressing the adsorption isotherms for aluminium oxide, zinc oxide, and titanium dioxide. FTIR and SEM were used in conducting investigation on adsorbents. Among the three adsorbents, titanium dioxide was the best.