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Removal of Atenolol From Aqueous Solutions by Multiwalled Carbon Nanotubes Modified With Ozone: Kinetic and Equilibrium Study Publisher Pubmed

Summary: A study found modified carbon nanotubes remove 75% of atenolol from water, cleaning pollution. #WaterPurification #Nanotechnology

Dehdashti B1 ; Amin MM2, 3 ; Pourzamani H2, 3 ; Rafati L4 ; Mokhtari M1
Authors

Source: Water Science and Technology Published:2018


Abstract

The aim of study is removal of atenolol from aqueous solutions by multiwalled carbon nanotubes modified with ozone. The design of the experiment was adopted across four levels with the L16 matrix arrangement. The factors influencing atenolol adsorption include changes in the pH value, contact time, the dose of the modified multiwall carbon nanotube, and the initial concentration of atenolol in the solution; these factors were evaluated along with the extent of their influence on removal efficiency. Data analyses were performed by the Design Expert 6 software. The results indicated that the pH, contact time, adsorbent dose, and the initial concentration were 7, 20 min, 0.15 g/L and 1 mg/L, respectively. In this state, the removal efficiency was calculated to be 75.79%. The maximum adsorption capacity was obtained as 5.05 mg/g under optimal conditions. The data were analyzed using adsorption models obtained from the isotherm fitting tool software. The results suggested that the data had a greater congruence with the Freundlich model (corrected Akaike information criterion ¼ 2.58). Furthermore, the kinetics of the reactions followed pseudo second order kinetics (R2 ¼ 0.95). Based on this study, it can be concluded that modified multiwall carbon nanotubes enjoy high potential and efficiency as adsorbents for the removal of atenolol from aqueous solutions. © 2018 IWA Publishing. All rights reserved.
1. Atenolol Absorption by Multi-Wall Carbon Nanotubes From Aqueous Solutions, Journal of Mazandaran University of Medical Sciences (2017)
3. A Review of the Performance of Carbon Nanotubes in Reducing Environmental Pollution, Journal of Environmental Health and Sustainable Development (2017)
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Removal of Atenolol From Aqueous Solutions by Multiwalled Carbon Nanotubes Modified With Ozone: Kinetic and Equilibrium Study
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