Brown Seaweed Sargassum muticum as Low-Cost ...
Document type :
Article dans une revue scientifique: Article original
Permalink :
Title :
Brown Seaweed Sargassum muticum as Low-Cost Biosorbent of Methylene Blue
Author(s) :
El Atouani, Samir [Auteur]
Université Chouaib Doukkali [UCD]
Belattmania, Zahira [Auteur]
Université Chouaib Doukkali [UCD]
Reani, Abdeltif [Auteur]
Université Chouaib Doukkali [UCD]
Tahiri, Soufiane [Auteur]
Université Chouaib Doukkali [UCD]
Aarfane, Abdellatif [Auteur]
Université Chouaib Doukkali [UCD]
Bentiss, Fouad [Auteur]
Université Chouaib Doukkali [UCD]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Zrid, Rachid [Auteur]
Université Chouaib Doukkali [UCD]
Sabour, Brahim [Auteur]
Université Chouaib Doukkali [UCD]
Université Chouaib Doukkali [UCD]
Belattmania, Zahira [Auteur]
Université Chouaib Doukkali [UCD]
Reani, Abdeltif [Auteur]
Université Chouaib Doukkali [UCD]
Tahiri, Soufiane [Auteur]
Université Chouaib Doukkali [UCD]
Aarfane, Abdellatif [Auteur]
Université Chouaib Doukkali [UCD]
Bentiss, Fouad [Auteur]
Université Chouaib Doukkali [UCD]
Jama, charafeddine [Auteur]

Unité Matériaux et Transformations - UMR 8207 [UMET]
Zrid, Rachid [Auteur]
Université Chouaib Doukkali [UCD]
Sabour, Brahim [Auteur]
Université Chouaib Doukkali [UCD]
Journal title :
International Journal of Environmental Research
Abbreviated title :
Int J Environ Res
Volume number :
13
Pages :
131-142
Publisher :
Springer Science and Business Media LLC
Publication date :
2018-11-20
HAL domain(s) :
Chimie/Matériaux
Chimie/Polymères
Chimie/Polymères
English abstract : [en]
Biomass of the invasive seaweed Sargassum muticum harvested from the Atlantic coast of Morocco was investigated as a natural biosorbent for the removal of methylene blue (MB) dye from aqueous solutions. FTIR spectroscopy ...
Show more >Biomass of the invasive seaweed Sargassum muticum harvested from the Atlantic coast of Morocco was investigated as a natural biosorbent for the removal of methylene blue (MB) dye from aqueous solutions. FTIR spectroscopy was used to examine the variability of functional groups participating in the interaction between MB and biosorbent. The zero point charge (pHZPC) of the biomass was about 5.45. The factors affecting the efficiency of the biosorption process such as the biosorbent dose, the initial solution pH, the initial dye concentration and the contact time were investigated. The theoretical monolayer saturation capacity was estimated to be 191.38 mg/g. The biosorption process was generally not dependent on pH for values ranging from 2 to 10. The biosorption occurs very fast in the first 5 min and reaches the equilibrium within 60–90 min. The pseudo-second-order model was found to explain the adsorption kinetics most effectively. Four conventional isotherm models were applied to describe the biosorption equilibrium data and classified according to their correlation coefficients in the following order: Temkin model (R2 = 0.989) > Dubinin–Radushkevich (R2 = 0.982) > Langmuir (R2 = 0.938) > Freundlich (R2 = 0.934). The Temkin constants (KT = 0.825 L/g, bT = 43.165 J/mol) and the Dubinin–Radushkevich mean free energy (ED= 0.731 kJ/mol) indicated that the adsorption of MB onto the biomass of the invasive seaweed could be a physisorption process. The values of the thermodynamic parameters showed that adsorption is a spontaneous and exothermic process. This study suggests that biomass of the invasive seaweed Sargassum muticum has a good potential capacity to remove MB dye and it could offer promising opportunity, as a low-cost biosorbent for the treatment of cationic dye industrial wastewaters.Show less >
Show more >Biomass of the invasive seaweed Sargassum muticum harvested from the Atlantic coast of Morocco was investigated as a natural biosorbent for the removal of methylene blue (MB) dye from aqueous solutions. FTIR spectroscopy was used to examine the variability of functional groups participating in the interaction between MB and biosorbent. The zero point charge (pHZPC) of the biomass was about 5.45. The factors affecting the efficiency of the biosorption process such as the biosorbent dose, the initial solution pH, the initial dye concentration and the contact time were investigated. The theoretical monolayer saturation capacity was estimated to be 191.38 mg/g. The biosorption process was generally not dependent on pH for values ranging from 2 to 10. The biosorption occurs very fast in the first 5 min and reaches the equilibrium within 60–90 min. The pseudo-second-order model was found to explain the adsorption kinetics most effectively. Four conventional isotherm models were applied to describe the biosorption equilibrium data and classified according to their correlation coefficients in the following order: Temkin model (R2 = 0.989) > Dubinin–Radushkevich (R2 = 0.982) > Langmuir (R2 = 0.938) > Freundlich (R2 = 0.934). The Temkin constants (KT = 0.825 L/g, bT = 43.165 J/mol) and the Dubinin–Radushkevich mean free energy (ED= 0.731 kJ/mol) indicated that the adsorption of MB onto the biomass of the invasive seaweed could be a physisorption process. The values of the thermodynamic parameters showed that adsorption is a spontaneous and exothermic process. This study suggests that biomass of the invasive seaweed Sargassum muticum has a good potential capacity to remove MB dye and it could offer promising opportunity, as a low-cost biosorbent for the treatment of cationic dye industrial wastewaters.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Non spécifiée
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2020-07-09T17:32:11Z
2020-08-26T09:41:04Z
2020-08-26T09:41:04Z