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

10.00$
ARTICLE DOWNLOAD

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

10.00$

Asaad F. Hassan, Fouzy Alafid & Radim Hrdina

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.

Only units of this product remain
Year 2020
Language English
Format PDf
DOI 10.1007/s10971-020-05295-y