Abstract
The discharge of industrial waste comprising organic pollutants into aquatic environment induces numerous health risks. Crosslinked adsorbent beads were developed based on the alginate and the modified layered silicate (Ni-magadiite) for a promising removal of methylene blue (MB) dye. Response surface methodology (RSM), with Box–Behnken design matrix was successfully employed for the optimization of the adsorption parameters. The characterization of composite beads was realized by XRD, FTIR, SEM and TGA analysis. The results revealed that the adsorbent beads have more diverse and uneven morphology with the availability of functional groups and more thermally stable. Under the optimal conditions, the composite hydrogel beads showed a 95.17% removal efficiency of MB dye. The MB adsorption process follows a pseudo second order kinetic model with the adsorption isotherm adjusted to a Langmuir model. According to the statistical analysis of variance (ANOVA), the proposed quadratic model was significant, with a good correlation between the experimental and predicted data of the desired response. The reuse efficiency of the hydrogel beads was demonstrated with a removal efficiency of 85.48% after the third use.
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Mokhtar, A., Boukoussa, B., Baba Ahmed, A. et al. Alginate@Layered Silicate Composite Beads: Dye Elimination, Box–Behnken Design Optimization and Antibacterial Property. J Inorg Organomet Polym 32, 2615–2633 (2022). https://doi.org/10.1007/s10904-022-02350-9
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DOI: https://doi.org/10.1007/s10904-022-02350-9