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Removal of cationic dye from the aqueous solutions by using the natural clay of Maghnia (Algeria)

Hadj Said, Aissa and Manero, Marie-Hélène and Belarbi, El-Habib Removal of cationic dye from the aqueous solutions by using the natural clay of Maghnia (Algeria). (2014) Desalination and Water Treatment, 52 (34-36). 6673-6683. ISSN 1944-3994

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Official URL: https://doi.org/10.1080/19443994.2013.819147

Abstract

The results obtained in this study showed that more than 80% of methylene blue (MB) was eliminated in the first five minutes with a neutral pH at 20°C and with the variable initial concentrations of MB between 5 and 30 mg/l in the presence of 1 g/l of clay. The clay of Maghnia flocculates in the presence of the MB in solution regardless of the strength of the pH of the medium. The optimal elimination of both MB (99%) and clay (98%) has been reached when mixing 120 mg/l of MB with 0.4–0.5 g/l of clay (FMC or SMC). The same result was obtained when mixing 20 mg/l of MB with 0.16–0.2 g/l of clay (FMC or SMC). Adding a suspension from the clay of Maghnia to the wastewater textile industry has proven effective. Second-order kinetic model represents well, this elimination with a coefficient of correlation R2 ranging between 0.9991 and 1.0. Freundlich, Temkin, and Dubinin–Radushkevich models showed that the temperature between 10 and 40°C does not have a great effect on this elimination. Thermodynamic parameters ΔG°, ΔH° and ΔS° indicated that the process is spontaneous with a weak energy.

Item Type:Article
HAL Id:hal-02023319
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Université Ibn Khaldoun de Tiaret (ALGERIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
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Deposited By: Marie-helene MANERO
Deposited On:18 Feb 2019 13:47

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