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Article Dans Une Revue Physical Chemistry Research Année : 2024

Modified biopolymer as adsorbent for methylene blue dye removal

Résumé

In this work, we developed an eco-friendly material for use in the wastewater treatment operation. A copolymer was prepared from carboxymethylcellulose (CMC) modified with acrylamide (AM) and N-vinylpyrrolidone (NVP). Then, it was characterized using FTIR spectrometry, thermogravimetric analysis (TGA/DTG) and diffraction of X-ray (XRD). The properties of CMC-AM-NVP copolymer as an adsorbent of methylene blue (MB) dye were investigated and the parameters affecting the removal process were evaluated. It was found that the adsorption of MB dye on the CMC-AM-NVP copolymer can be described by the pseudo-second order equation. Equilibrium data was modeled by Langmuir, Freundlich, and Temkin isotherms. Langmuir isotherm model provided the best fit for the adsorption of MB on the CMC-AM-NVP copolymer with R2 value of 0.999. The efficiency of dye elimination on the copolymer reached 99.4%. The study outcomes show that CMC-AM-NVP is a promising candidate for efficient removal of methylene blue; therefore, it is concluded that the addition of NVP to the copolymer has a notable improvement in the adsorption process.

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Chimie
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Dates et versions

hal-04466994 , version 1 (19-02-2024)

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Belaid A, Bouras B, Benhabib K, Hocine T, Tennouga L, et al.. Modified biopolymer as adsorbent for methylene blue dye removal. Physical Chemistry Research, 2024, 12 (1), pp.189-204. ⟨10.22036/pcr.2023.393442.2325⟩. ⟨hal-04466994⟩

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