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Erschienen in: Journal of Sol-Gel Science and Technology 1/2020

24.04.2020 | Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)

Preparation of melamine formaldehyde/nanozeolite Y composite based on nanosilica extracted from rice husks by sol–gel method: adsorption of lead (II) ion

verfasst von: Asaad F. Hassan, Fouzy Alafid, Radim Hrdina

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2020

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Abstract

In the present work nanozeolite Y was prepared from nanosilica powder extracted from rice husks ash by sol–gel method as a green biosource (NZ). Melamine formaldehyde resin (MF) and melamine formaldehyde/nanozeolite Y (MFZ) particles were prepared at pH 9 and 110 °C. NZ, MF, and MFZ were characterized using TGA, SEM, XRD, nitrogen adsorption, pHPZC, and FTIR. Melamine formaldehyde/nanozeolite Y exhibited an advanced textural structure with surface area of 1035.6 m2/g and abundance of chemical functional groups. Lead ions adsorption was investigated under different application conditions considering thermodynamic and kinetics studies. The maximum adsorption capacity (qm, mg/g) was confirmed by MFZ and found to be 180.8 after 60 min of equilibrium time at pH6, 1.0 g/L as adsorbent dosage, and at 40 °C. Lead (II) adsorption onto solid adsorbents fitted with Langmuir adsorption, pseudo-second order, Elovich kinetic, and Vant Hoff’s models. Thermodynamic investigations showed that lead adsorption by all the adsorbents are spontaneous and endothermic.

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Metadaten
Titel
Preparation of melamine formaldehyde/nanozeolite Y composite based on nanosilica extracted from rice husks by sol–gel method: adsorption of lead (II) ion
verfasst von
Asaad F. Hassan
Fouzy Alafid
Radim Hrdina
Publikationsdatum
24.04.2020
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2020
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-020-05295-y

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