Title of article :
Effect of humic acid on adsorption of methylparaben from aqueous solutions onto commercially available granular activated carbons
Author/Authors :
Solaimany Nazar, A. R. Department of Chemical Engineering - University of Isfahan - Isfahan, Iran , Kurade, M. B. Department of Earth Resources and Environmental Engineering - Hanyang University - Seoul, South Korea , Ali Khan, M. Department of Chemistry - College of Science - King Saud University - Riyadh, Saudi Arabia , Jeon, B.-H. Department of Earth Resources and Environmental Engineering - Hanyang University - Seoul, South Korea
Abstract :
Adsorption of methylparaben (MP) on Calgon carbon (F400) and Norit-type Granular Activated Carbons (GACs) from aqueous solutions was examined. The in uence of Humic Acid (HA) on the adsorption of MP under different pH conditions was evaluated. The adsorption isotherm results are well described by the Freundlich model. The MP adsorption capacity on F400 and Norit GACs was found 150 mg/g. In the presence of Total Organic Carbon (TOC) with 2.357 mg/L HA, the maximum MP adsorption capacity on F400 GAC at pH 7 increased 2.2 folds. The Norit-type GAC had a comparatively higher uptake capacity for MP than F400 GAC. The key mechanism for MP adsorption onto the F400 GAC was through the hydrogen interaction between the -OH functional groups of the MP molecules. The MP adsorption capacity on Norit GAC increased from 5 to 100 mg/g at pH 7.
Keywords :
Humic acid , Methyl paraben , Adsorption , F400 GAC , Norit GAC
Journal title :
Scientia Iranica(Transactions C: Chemistry, Chemical Engineering)
