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

Research output: Contribution to journal › Article › Research › peer review

Authors

  • Jacques Madiba Mboka
  • Hermann Dzoujo Tamaguelon
  • Victor Odhiambo Shikuku
  • Sylvain Tome
  • Romain Pokeya
  • Donald Kamdem Njouond
  • Fidele Gallo Titini
  • Aysenur Limon
  • Christoph Janiak
  • Marchand Manga Dika
  • Marie Annie Etoh
  • David Joh Daniel Dina

Research Organisations

External Research Organisations

  • University of Douala
  • Kaimosi Friends University College (KAFU)
  • Universitaire catholique saint Jérôme de Douala
  • University Hospital Düsseldorf
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Details

Original languageEnglish
Pages (from-to)6234-6247
Number of pages14
JournalMaterials Advances
Volume5
Early online date8 Jul 2024
Publication statusPublished - 2024

Abstract

In this study, the geopolymer composites GP0, GP7.5-CP, and GP10-CP were synthesized using mixtures of pozzolan (Pz) and waste charcoal powders (CP) as precursors with CP mass contents of 0, 7.5 and 10%, respectively. The geocomposites obtained were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) surface analysis and scanning electron microscopy analysis (SEM). The sequestration performance for crystal violet (CV) and chromium VI (Cr VI) was evaluated in mono- and bi-component systems. The incorporation of 7.5% CP (GP7.5-CP) resulted in a ∼19% increase in the specific surface area and densification of the functional groups. Incorporation of CP increased the adsorption capacity due to (1) increased surface areas (2) increased active functional group density and distribution, and (3) shielding effect of CP on acidic sites improving CV adsorption. The adsorption capacities in binary systems were 45 and 59% higher than in single solute systems for CV and Cr(vi), respectively. The Rq > 1 and 1/n > 1 implied synergistic and cooperative adsorption, denoting adsorption of Cr(vi) creates new binding sites for CV adsorption. Ultrahigh adsorption density of 2803 and 3659 mg g−1 in single solute systems was achieved for CV and Cr(vi), respectively. The adsorption mechanism is multi-mechanistic involving the reduction of HCrO4− to Cr3+ by the donor groups of geocomposites, ion exchange, electrostatic and hydrogen bonding interactions. Modification of geopolymers with coal ash stupendously ameliorates their adsorption capacity for simultaneous adsorption of dyes and heavy metals in water.

ASJC Scopus subject areas

Cite this

Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites. / Mboka, Jacques Madiba; Tamaguelon, Hermann Dzoujo; Shikuku, Victor Odhiambo et al.
In: Materials Advances, Vol. 5, 2024, p. 6234-6247.

Research output: Contribution to journal › Article › Research › peer review

Mboka, JM, Tamaguelon, HD, Shikuku, VO, Tome, S, Pokeya, R, Njouond, DK, Titini, FG, Limon, A, Janiak, C, Dika, MM, Etoh, MA & Dina, DJD 2024, 'Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites', Materials Advances, vol. 5, pp. 6234-6247. https://doi.org/10.1039/d4ma00408f
Mboka, J. M., Tamaguelon, H. D., Shikuku, V. O., Tome, S., Pokeya, R., Njouond, D. K., Titini, F. G., Limon, A., Janiak, C., Dika, M. M., Etoh, M. A., & Dina, D. J. D. (2024). Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites. Materials Advances, 5, 6234-6247. https://doi.org/10.1039/d4ma00408f
Mboka JM, Tamaguelon HD, Shikuku VO, Tome S, Pokeya R, Njouond DK et al. Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites. Materials Advances. 2024;5:6234-6247. Epub 2024 Jul 8. doi: 10.1039/d4ma00408f
Mboka, Jacques Madiba ; Tamaguelon, Hermann Dzoujo ; Shikuku, Victor Odhiambo et al. / Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites. In: Materials Advances. 2024 ; Vol. 5. pp. 6234-6247.
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title = "Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites",
abstract = "In this study, the geopolymer composites GP0, GP7.5-CP, and GP10-CP were synthesized using mixtures of pozzolan (Pz) and waste charcoal powders (CP) as precursors with CP mass contents of 0, 7.5 and 10%, respectively. The geocomposites obtained were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) surface analysis and scanning electron microscopy analysis (SEM). The sequestration performance for crystal violet (CV) and chromium VI (Cr VI) was evaluated in mono- and bi-component systems. The incorporation of 7.5% CP (GP7.5-CP) resulted in a ∼19% increase in the specific surface area and densification of the functional groups. Incorporation of CP increased the adsorption capacity due to (1) increased surface areas (2) increased active functional group density and distribution, and (3) shielding effect of CP on acidic sites improving CV adsorption. The adsorption capacities in binary systems were 45 and 59% higher than in single solute systems for CV and Cr(vi), respectively. The Rq > 1 and 1/n > 1 implied synergistic and cooperative adsorption, denoting adsorption of Cr(vi) creates new binding sites for CV adsorption. Ultrahigh adsorption density of 2803 and 3659 mg g−1 in single solute systems was achieved for CV and Cr(vi), respectively. The adsorption mechanism is multi-mechanistic involving the reduction of HCrO4− to Cr3+ by the donor groups of geocomposites, ion exchange, electrostatic and hydrogen bonding interactions. Modification of geopolymers with coal ash stupendously ameliorates their adsorption capacity for simultaneous adsorption of dyes and heavy metals in water.",
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TY - JOUR

T1 - Synergistic co-adsorptive removal of crystal violet and chromium(vi) from water by pozzolan-charcoal based geopolymer composites

AU - Mboka, Jacques Madiba

AU - Tamaguelon, Hermann Dzoujo

AU - Shikuku, Victor Odhiambo

AU - Tome, Sylvain

AU - Pokeya, Romain

AU - Njouond, Donald Kamdem

AU - Titini, Fidele Gallo

AU - Limon, Aysenur

AU - Janiak, Christoph

AU - Dika, Marchand Manga

AU - Etoh, Marie Annie

AU - Dina, David Joh Daniel

N1 - Publisher Copyright: © 2024 RSC.

PY - 2024

Y1 - 2024

N2 - In this study, the geopolymer composites GP0, GP7.5-CP, and GP10-CP were synthesized using mixtures of pozzolan (Pz) and waste charcoal powders (CP) as precursors with CP mass contents of 0, 7.5 and 10%, respectively. The geocomposites obtained were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) surface analysis and scanning electron microscopy analysis (SEM). The sequestration performance for crystal violet (CV) and chromium VI (Cr VI) was evaluated in mono- and bi-component systems. The incorporation of 7.5% CP (GP7.5-CP) resulted in a ∼19% increase in the specific surface area and densification of the functional groups. Incorporation of CP increased the adsorption capacity due to (1) increased surface areas (2) increased active functional group density and distribution, and (3) shielding effect of CP on acidic sites improving CV adsorption. The adsorption capacities in binary systems were 45 and 59% higher than in single solute systems for CV and Cr(vi), respectively. The Rq > 1 and 1/n > 1 implied synergistic and cooperative adsorption, denoting adsorption of Cr(vi) creates new binding sites for CV adsorption. Ultrahigh adsorption density of 2803 and 3659 mg g−1 in single solute systems was achieved for CV and Cr(vi), respectively. The adsorption mechanism is multi-mechanistic involving the reduction of HCrO4− to Cr3+ by the donor groups of geocomposites, ion exchange, electrostatic and hydrogen bonding interactions. Modification of geopolymers with coal ash stupendously ameliorates their adsorption capacity for simultaneous adsorption of dyes and heavy metals in water.

AB - In this study, the geopolymer composites GP0, GP7.5-CP, and GP10-CP were synthesized using mixtures of pozzolan (Pz) and waste charcoal powders (CP) as precursors with CP mass contents of 0, 7.5 and 10%, respectively. The geocomposites obtained were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) surface analysis and scanning electron microscopy analysis (SEM). The sequestration performance for crystal violet (CV) and chromium VI (Cr VI) was evaluated in mono- and bi-component systems. The incorporation of 7.5% CP (GP7.5-CP) resulted in a ∼19% increase in the specific surface area and densification of the functional groups. Incorporation of CP increased the adsorption capacity due to (1) increased surface areas (2) increased active functional group density and distribution, and (3) shielding effect of CP on acidic sites improving CV adsorption. The adsorption capacities in binary systems were 45 and 59% higher than in single solute systems for CV and Cr(vi), respectively. The Rq > 1 and 1/n > 1 implied synergistic and cooperative adsorption, denoting adsorption of Cr(vi) creates new binding sites for CV adsorption. Ultrahigh adsorption density of 2803 and 3659 mg g−1 in single solute systems was achieved for CV and Cr(vi), respectively. The adsorption mechanism is multi-mechanistic involving the reduction of HCrO4− to Cr3+ by the donor groups of geocomposites, ion exchange, electrostatic and hydrogen bonding interactions. Modification of geopolymers with coal ash stupendously ameliorates their adsorption capacity for simultaneous adsorption of dyes and heavy metals in water.

UR - http://www.scopus.com/inward/record.url?scp=85198100321&partnerID=8YFLogxK

U2 - 10.1039/d4ma00408f

DO - 10.1039/d4ma00408f

M3 - Article

AN - SCOPUS:85198100321

VL - 5

SP - 6234

EP - 6247

JO - Materials Advances

JF - Materials Advances

ER -