Title of article
Application of raw and roasted date seeds for dyes removal from aqueous solution
Author/Authors
el marouani, m. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , azoulay, k. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , bencheikh, i. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , el fakir, l. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , rghioui, l. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , el hajji, a. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , sebbahi, s. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , el hajjaji, s. mohamed v university - faculty of sciences - laboratory of spectroscopy, molecular modeling, materials, nanomaterials, water and environment, department of chemistry, Rabat, Morocco , kifani-sahban, f. mohamed v university - faculty of sciences - team of modeling and simulation in mechanics and energetic, physical department, Rabat, Morocco
From page
2387
To page
2396
Abstract
The present study concerns the adsorption in aqueous solution of methylene blue (MB) and methyl orange (MO) on raw date seeds powder (RDS), roasted date seeds (RoDS), carbonized date seeds (CDS) and commercial activated carbon (CAC) taken as a reference. Infrared spectroscopy has been used to characterize the aforementioned adsorbents. The adsorption tests were carried out by varying the mass of the adsorbent, the initial concentration of the adsorbate and the pH of adsorbate solution. The optimum removal conditions have been determined using the surface response methodology to fit retention rate. Optimal dyes (5 mg/L) removal occurs at pH 5 with sorbent dose of 75 mg/L. Results of adsorption on various examined materials show that raw and roasted date seeds!are effective sorbents for removing MB from aqueous solution. The infrared analysis reveals that the functional groups involved in the adsorption exist in RDS and RoDS but not in CDS. MB is adsorbed in multilayers on heterogeneous surfaces. The adsorption process of the MB on the examined adsorbents is controlled by the chemisorption.
Keywords
Raw Date Seeds (RDS) , Roasted Date Seeds (RoDS) , Commercial Activated Carbon (CAC) , Adsorption , Methylene Blue (MB) , Methyl Orange (MO) , Response surface methodology (RSM)
Journal title
Journal of Materials and Environmental Science
Journal title
Journal of Materials and Environmental Science
Record number
2583429
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