Modeling external mass transfer during the batch adsorbtion of phenol on activated carbon using fractional design
January 21, 2022
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| Article Title: | Modeling external mass transfer during the batch adsorbtion of phenol on activated carbon using fractional design |
| Authors: | Hamaidi-Maouche N., Bourouina-Bacha Saliha, Kechroud N., Tighzert H. |
| Affiliation: | 1 Département Génie des Procédés, Faculté de Technologie, Université A.MIRA Bejaia |
| Abstract: | In this work, we have studied the variation of the external mass transfer during the adsorption of phenol on activated carbon in a batch reactor, using a 25-1 fractional design. The pH of the solution being fixed at 3, we varied the phenol concentration (ph) from 20 to 30 mg/L, the temperature (T) from 25 to 35°C, the particle size of the activated carbon (dp) from 0.405 to 0.805 mm, the stirring speed (w) from 500 to 1000 rpm and the amount of activated carbon in the solution (ch) from 1 to 2g/L. A linear model with interactions is obtained and validated with an adjusted correlation coefficient of around 99.60%.The greatest effect is obtained for the interaction (ch.w), followed by the main effect (w). The external mass transfer coefficient increases with the increase of the stirring speed, the temperature of the solution, the particle size and decrease with the increase of the amount of activated carbon and initial concentration of phenol in the solution. The maximum value for the external mass transfer coefficient (kf = 0.300 cm.min -1) is obtained for dp= 0.805mm, T=35°C, ch= 1g/L, w=1000rpm and ph= 20mg/L. |
| Keywords: | Adsorption; phenol, activated carbon, mass transfer, fractional design |
| *Correspondence: | Nassima HAMAIDI – MAOUCHE, Université A.MIRA Bejaia, Faculté de Technologie, Département Génie des Procédés, Route Targua Ouzemmour Bejaia 06000 Algérie; e-mail :nassima.maouche@univ-bejaia.dz |
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