Adsorption of phenol from aqueous solution onto zeolites Y modified by silylation |
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Authors: | Nourrdine Chaouati Ahcène Soualah Mohamed Chater |
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Institution: | 1. Département de chimie, faculté des sciences exactes, université A. Mira, 06000 Bejaia, Algeria;2. Département de génie des procédés, université A. Mira, 06000 Bejaia, Algeria;3. LEPCMAE, université Houari-Boumediène, 16111 Alger, Algeria |
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Abstract: | The present work consists in studying the adsorption of phenol onto zeolites Y modified by silylation, in order to increase their hydrophobic character. The operation was carried out by chemical liquid deposition with trimethylchlorosilane (TMCS). Study of the effect of certain parameters like initial concentration, pH and ionic strength were conducted. Experimental data were fitted by the models of Langmuir, Freundlich and Dubinin-Raduskevich calculated by non-linear regression. Results obtained show that the adsorption of phenol on samples is very fast and supported at acidic values of pH. We also found that phenol uptake increases with Si/Al ratio and modification by silylation improves the percentage of adsorption by approximately 30%. |
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