Novel Superadsorbent from Pozzolan-Charcoal based Geopolymer Composite for the Efficient Removal of Aqueous Crystal Violet

Mboka, Jacques Madiba; Tamaguelon, Hermann Dzoujo; Shikuku, Victor; Tome, Sylvain; Deugueu, Valery Franck; Othman, Hanibal; Janiak, Christoph; Dika, Marchand Manga; Etoh, Marie Annie; Dina, David Joh Daniel

doi:10.1007/s11270-024-07257-4

Cited by 6 publications

(1 citation statement)

References 48 publications

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“…21 Additionally, geopolymers are known to be better adsorbents than their precursors. 4,13,15,16,23 While the use of coal powders (CPs) as adjuvants in the synthesis of geopolymers is hypothesized to reduce accessibility of CV to the acidic sites, the resultant antagonistic or protagonist effect in the binary elimination of anionic Cr(VI) is also unknown. Furthermore, while adsorption capacities at equilibrium of adsorbents in binary systems have been evaluated, adsorption kinetics/rates in binary systems are seldom evaluated.…”

Section: Introductionmentioning

confidence: 99%

Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites

Mboka,

Tamaguelon,

Shikuku

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites

Mboka,

Tamaguelon,

Shikuku

et al. 2024

Mater. Adv.

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Recent advances in metal oxide-biochar composites for water and soil remediation: A review

Dzoujo,

Shikuku,

Tome

et al. 2024

Hybrid Advances

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RSM-CCD design of volcanic ash/ rice husk ash based phosphate geopolymer for crystal violet adsorption: kinetics and isotherms

Tchakounte,

Lenou,

Shikuku

et al. 2024

Sci Rep

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In this work, the application of central composite design (CCD) was used to optimise the synthesis of volcanic ash/ rice husk ash-based phosphate geopolymers. The effects of three factors namely, volcanic ash fraction, rice husk ash fraction and phosphoric acid concentration on porosity structure were investigated based on methylene blue index and iodine index as response variables. At optimized conditions of 3.72 g volcanic ash, 1.97 g rice husk ash and 5 M phosphoric acid concentration, desirable porosity structure was attained. The optimized geopolymer and their precursors were characterized by XRF, FTIR and XRD and applied to sequester crystal violet dye (CV) from water. The equilibrium data were described by the Langmuir isotherm with a maximum adsorption density of 14.6 mg/g. Adsorption rate followed pseudo-second-order kinetics. Notably, maximized porosity structure was attained at low acid concentration (5 M), a significant outcome in terms of cost and safety for pilot scale application.

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Novel Superadsorbent from Pozzolan-Charcoal based Geopolymer Composite for the Efficient Removal of Aqueous Crystal Violet

Cited by 6 publications

References 48 publications

Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites

Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites

Recent advances in metal oxide-biochar composites for water and soil remediation: A review

RSM-CCD design of volcanic ash/ rice husk ash based phosphate geopolymer for crystal violet adsorption: kinetics and isotherms

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