Removal of methyl orange from aqueous solution onto modified extracted cellulose from Stipa Tenacissima L

This study investigated the sorption behaviour of modified extracted cellulose (MEC) from Stipa Tenacissima L by cetyltrimethyl ammonium bromide to improve adsorption capacity for the removal of methyl orange (MO) dye from aqueous solutions. Physico-chemical characterisation of extracted material wa...

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Bibliographic Details
Published in:International journal of environmental analytical chemistry 2022-12, Vol.102 (19), p.8124-8140
Main Authors: Lafi, Ridha, Abdellaoui, Lotfi, Montasser, Imed, Hafiane, Amor
Format: Article
Language:English
Subjects:
Adsorption
Ammonium
Ammonium bromides
Ammonium compounds
Aqueous solutions
Cellulose
Dyes
Electrostatic properties
Hydrophobicity
Ionic strength
kinetics
mechanism
Methyl orange
modified extracted cellulose
pH effects
Removal
Stipa Tenacissima L
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Summary:This study investigated the sorption behaviour of modified extracted cellulose (MEC) from Stipa Tenacissima L by cetyltrimethyl ammonium bromide to improve adsorption capacity for the removal of methyl orange (MO) dye from aqueous solutions. Physico-chemical characterisation of extracted material was performed by pH PZC determination, SEM, DSC, XDR and FTIR. The pH PZC occurred around a pH of 4.2. The effect of pH, contact time, MO concentration, adsorbent dosage, ionic strength and temperature on adsorption was presented. The results showed that it was in favour of adsorption at pH = 3.7 with 0.2 g/50 mL. Modelling study shows that the pseudo-second-order kinetic model and Langmuir adsorption isotherm model provide better fitness to the experimental data and the maximum adsorption capacity was 16.94 mg/g at 25°C. Calculated thermodynamic parameters ∆G 0 , ∆H 0 and ∆S 0 showed that adsorption is spontaneous and exothermic, and the possible mechanism controlling MO adsorption on the MEC is related to electrostatic and hydrophobic interactions.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067319.2020.1845663