radia zerdoum (2019) Valorisation de certains déchets d’origine naturelle et industrielle pour le traitement des eaux usées. University of Souk Ahras
Scientific Publications
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Abstract
The aim of this work is to remove two Methylene Blue (MB, a cationic dye) and Coriacide Bordeaux 3B (CB3B, an anionic dye) using eggshell membrane bio-adsorbent (ESM) in fixed bed and Batch systems. Several techniques have been used to characterize eggshell membrane adsorbent such as DRX, FTIR, SEM, ATG, BET and the zeta potential.
The kinetics of the adsorbate/adsorbent equilibrium were studied though a series of experiments by varying the bed height (10-30 mm), the flow rate (1-3ml. min-1), the initial dye concentration (5-15 mg. L-1), pH (2-10), ionic strength (0,01-0,1 N) and temperature (20-40 °C). The experimental results showed that the adsorption capacity increases by increasing the bed height and dye concentration, therefore it decreases with increasing the flow rate. The ESM adsorption capacity of MB is more pronounced in basic medium, however the CB3B dye adsorption was higher in acidic medium.
The presence of NaCl improves the degradation of the CB3B, while the temperature increasing does not promote the adsorption of these dyes. The desorption of dyes was carried out using distilled water. Several kinetic models have been applied in this study: Bohart-Adams, Thomas, Yoon-Nelson, Wolborska, BDST, Clark, Dose response, Freundlich and Langmuir to give a mathematical aspect to the experimental results. The optimal adsorption value of CB3B was found for minimal parameters of temperature, flow right and pH.
Keywords: Egg shell membrane, Adsorption, Dyes, Fixed bed, Water treatment, Modeling.
The kinetics of the adsorbate/adsorbent equilibrium were studied though a series of experiments by varying the bed height (10-30 mm), the flow rate (1-3ml. min-1), the initial dye concentration (5-15 mg. L-1), pH (2-10), ionic strength (0,01-0,1 N) and temperature (20-40 °C). The experimental results showed that the adsorption capacity increases by increasing the bed height and dye concentration, therefore it decreases with increasing the flow rate. The ESM adsorption capacity of MB is more pronounced in basic medium, however the CB3B dye adsorption was higher in acidic medium.
The presence of NaCl improves the degradation of the CB3B, while the temperature increasing does not promote the adsorption of these dyes. The desorption of dyes was carried out using distilled water. Several kinetic models have been applied in this study: Bohart-Adams, Thomas, Yoon-Nelson, Wolborska, BDST, Clark, Dose response, Freundlich and Langmuir to give a mathematical aspect to the experimental results. The optimal adsorption value of CB3B was found for minimal parameters of temperature, flow right and pH.
Keywords: Egg shell membrane, Adsorption, Dyes, Fixed bed, Water treatment, Modeling.
Information
| Item Type | Thesis |
|---|---|
| Divisions |
» Laboratory sciences and technical water and environment » Faculty of Science and Technology |
| ePrint ID | 1895 |
| Date Deposited | 2019-07-14 |
| Further Information | Google Scholar |
| URI | https://univ-soukahras.dz/en/publication/article/1895 |
BibTex
@phdthesis{uniusa1895,
title={Valorisation de certains déchets d’origine naturelle et industrielle pour le traitement des eaux usées},
author={radia zerdoum},
year={2019},
school={University of Souk Ahras}
}
title={Valorisation de certains déchets d’origine naturelle et industrielle pour le traitement des eaux usées},
author={radia zerdoum},
year={2019},
school={University of Souk Ahras}
}