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Extraction of silica from fly-ash and fabrication of silica-clay composite for dye removal and kinetic studies

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Published/Copyright: January 4, 2023
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 237 Issue 1-2

Abstract

A facile and green approach to extract silica from the coal fly-ash waste is extremely critical for environmental sustainability and economically suitable. In this study, we have used acid-alkali coupled approach to improvised the proficiency of the extraction process. The sodium hydroxide (NaOH) soaking results the formation of the sodium silicate (Na2SiO3) solution then pure silica was obtained by heating at high temperature; this coupled route-way results better yield of silica (SiO2) which is ∼ 40 g. The efficiency of pure silica is not enough to remove toxic effluents from the aqueous media. A highly versatile approach of composite formation was adopted to fabricate silica-clay composite using kaolinite-clay and extracted silica. Both materials, extracted silica and its silica-clay composite were analyzed using scanning electron microscopy (SEM), energy dispersive X-ray (EDX) method, X-ray diffraction technique (XRD) and Fourier transform infra-red spectroscopy (FTIR). The silica-clay composite showed plate-tubular like morphology with enormous binding sites available for the sorption pollutants like organic dyes. It has shown excellent sorption of methylene blue (MB) efficiency of 131.5 mg/g, while silica furnished the sorption of 70.5 mg/g. Results revealed that the synthesized material could probably have better potential for dye removal from industrial effluents.

Keywords: dye removal; ecofriendly; fly-ash; kaolinite clay; nanocomposite
Corresponding authors: Arif Nazir, Department of Chemistry, The University of Lahore, Lahore, Pakistan, E-mail: ; and Norah Alwadai, Department of Physics, College of Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia, E-mail:
Corresponding author

Funding source: Princess Nourah bint Abdulrahman University

Award Identifier / Grant number: PNURSP2023R11

Acknowledgment

The authors express their gratitude to Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2023R11), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This research was funded by Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2023R11), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.

  3. Conflict of interest statement: Author declares no conflict of intrest.

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Received: 2022-09-20
Accepted: 2022-12-15
Published Online: 2023-01-04
Published in Print: 2023-02-23

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Preparation of zwitterionic ionic surfactants-based sulphonyl for steel protections: Experimental and theoretical insights
  4. The role of different inorganic anions on passive film durability for nickel against chloride ions pitting corrosion in borate buffered solution
  5. Measurement of thermodynamic properties, including volumetric, sonic, and viscometrical properties, of aqueous solutions containing polyethylene glycol and erythromycin at 293.15, 303.15, and 313.15 K
  6. Cationic distributions and dielectric properties of magnesium ferrites fabricated by sol-gel route and photocatalytic activity evaluation
  7. Effect of polylactic acid on the micellization of SDS and CTAB: physicochemical studies on surfactants aggregation
  8. Study of structure of nonaqueous reverse micelles with o-nitroaniline and methyl orange as molecular probes: comparison with an aqueous reverse micelles
  9. Micron sized anionic poly (methacrylic acid) microgel particles for the adsorptive elimination of cationic water pollutants
  10. Extraction of silica from fly-ash and fabrication of silica-clay composite for dye removal and kinetic studies
  11. Review Articles
  12. Tailoring 2D carbides and nitrides based photo-catalytic nanomaterials for energy production and storage: a review
  13. Bacterial oxidoreductive enzymes as molecular weapons for the degradation and metabolism of the toxic azo dyes in wastewater: a review
https://doi.org/10.1515/zpch-2022-0137
Keywords for this article
dye removal; ecofriendly; fly-ash; kaolinite clay; nanocomposite

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Preparation of zwitterionic ionic surfactants-based sulphonyl for steel protections: Experimental and theoretical insights
  4. The role of different inorganic anions on passive film durability for nickel against chloride ions pitting corrosion in borate buffered solution
  5. Measurement of thermodynamic properties, including volumetric, sonic, and viscometrical properties, of aqueous solutions containing polyethylene glycol and erythromycin at 293.15, 303.15, and 313.15 K
  6. Cationic distributions and dielectric properties of magnesium ferrites fabricated by sol-gel route and photocatalytic activity evaluation
  7. Effect of polylactic acid on the micellization of SDS and CTAB: physicochemical studies on surfactants aggregation
  8. Study of structure of nonaqueous reverse micelles with o-nitroaniline and methyl orange as molecular probes: comparison with an aqueous reverse micelles
  9. Micron sized anionic poly (methacrylic acid) microgel particles for the adsorptive elimination of cationic water pollutants
  10. Extraction of silica from fly-ash and fabrication of silica-clay composite for dye removal and kinetic studies
  11. Review Articles
  12. Tailoring 2D carbides and nitrides based photo-catalytic nanomaterials for energy production and storage: a review
  13. Bacterial oxidoreductive enzymes as molecular weapons for the degradation and metabolism of the toxic azo dyes in wastewater: a review
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