Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies
Magnetic alginate beads (A-Fe2O3) and magnetic alginate functionalized multiwalled carbon nanotubes beads (A-F-Fe2O3) were synthesized using citrate coated maghemite nanoparticles (γ-Fe2O3). Vibrating sample magnetometry analysis showed that the mass saturation magnetization of A-F-Fe2O3, A-Fe2O3, a...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier B.V.
2019
|
| Subjects: |
| _version_ | 1796864628494434304 |
|---|---|
| author | Boukhalfa, Nadia Boutahala, Mokhtar Djebri, Nassima Idris, Ani |
| author_facet | Boukhalfa, Nadia Boutahala, Mokhtar Djebri, Nassima Idris, Ani |
| author_sort | Boukhalfa, Nadia |
| collection | ePrints |
| description | Magnetic alginate beads (A-Fe2O3) and magnetic alginate functionalized multiwalled carbon nanotubes beads (A-F-Fe2O3) were synthesized using citrate coated maghemite nanoparticles (γ-Fe2O3). Vibrating sample magnetometry analysis showed that the mass saturation magnetization of A-F-Fe2O3, A-Fe2O3, and γ-Fe2O3 is equal to 27.16, 29.06, and 42.63 emu·g−1, respectively. Compared with A-Fe2O3 beads, A-F-Fe2O3 beads showed a better adsorption performance for MB removal with a maximum monolayer adsorption capacity of qm = 905.5 mg·g−1. The adsorption studies revealed that the data of MB adsorption isotherm onto A-F-Fe2O3 were well fitted by Freundlich model. The adsorption was ionic strength and initial dye concentration-dependent. The beads presented high stability of MB adsorption capacity in a large domain of pH. Adsorption kinetic data followed the intraparticle diffusion model. Regeneration experiments were performed using five different desorbing agent. The findings reveal that magnetic A-F-Fe2O3 beads present an ideal and cost effective adsorbent in large-scale application as it demonstrated high affinity and reusability for methylene blue dye and facilitate an easy separation after treatment. |
| first_indexed | 2024-03-05T20:44:44Z |
| format | Article |
| id | utm.eprints-88423 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:44:44Z |
| publishDate | 2019 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-884232020-12-15T00:06:17Z http://eprints.utm.my/88423/ Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies Boukhalfa, Nadia Boutahala, Mokhtar Djebri, Nassima Idris, Ani TP Chemical technology Magnetic alginate beads (A-Fe2O3) and magnetic alginate functionalized multiwalled carbon nanotubes beads (A-F-Fe2O3) were synthesized using citrate coated maghemite nanoparticles (γ-Fe2O3). Vibrating sample magnetometry analysis showed that the mass saturation magnetization of A-F-Fe2O3, A-Fe2O3, and γ-Fe2O3 is equal to 27.16, 29.06, and 42.63 emu·g−1, respectively. Compared with A-Fe2O3 beads, A-F-Fe2O3 beads showed a better adsorption performance for MB removal with a maximum monolayer adsorption capacity of qm = 905.5 mg·g−1. The adsorption studies revealed that the data of MB adsorption isotherm onto A-F-Fe2O3 were well fitted by Freundlich model. The adsorption was ionic strength and initial dye concentration-dependent. The beads presented high stability of MB adsorption capacity in a large domain of pH. Adsorption kinetic data followed the intraparticle diffusion model. Regeneration experiments were performed using five different desorbing agent. The findings reveal that magnetic A-F-Fe2O3 beads present an ideal and cost effective adsorbent in large-scale application as it demonstrated high affinity and reusability for methylene blue dye and facilitate an easy separation after treatment. Elsevier B.V. 2019-02 Article PeerReviewed Boukhalfa, Nadia and Boutahala, Mokhtar and Djebri, Nassima and Idris, Ani (2019) Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies. Journal of Molecular Liquids, 275 . pp. 431-440. ISSN 0167-7322 http://dx.doi.org/10.1016/j.molliq.2018.11.064 |
| spellingShingle | TP Chemical technology Boukhalfa, Nadia Boutahala, Mokhtar Djebri, Nassima Idris, Ani Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title | Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title_full | Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title_fullStr | Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title_full_unstemmed | Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title_short | Maghemite/alginate/functionalized multiwalled carbon nanotubes beads for methylene blue removal: Adsorption and desorption studies |
| title_sort | maghemite alginate functionalized multiwalled carbon nanotubes beads for methylene blue removal adsorption and desorption studies |
| topic | TP Chemical technology |
| work_keys_str_mv | AT boukhalfanadia maghemitealginatefunctionalizedmultiwalledcarbonnanotubesbeadsformethyleneblueremovaladsorptionanddesorptionstudies AT boutahalamokhtar maghemitealginatefunctionalizedmultiwalledcarbonnanotubesbeadsformethyleneblueremovaladsorptionanddesorptionstudies AT djebrinassima maghemitealginatefunctionalizedmultiwalledcarbonnanotubesbeadsformethyleneblueremovaladsorptionanddesorptionstudies AT idrisani maghemitealginatefunctionalizedmultiwalledcarbonnanotubesbeadsformethyleneblueremovaladsorptionanddesorptionstudies |