Efficiency for Sorption Behaviour of Polymeric Resins of (2-hydroxybenzaldehyde) with Aliphatic and Aromatic Diamines Towards Different Metal Ions

Ploymeric Resins of 2-Hydroxybenzaldehyde

  • Ambreen Shah M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, Sindh, Pakistan
  • Asif Ali Shah Mehran University Institute of Science & Technology Development, Jamshoro, Sindh, Pakistan
  • Sobia Shafaq ambreen.shah@usindh.edu.pk Shah Institute of Bussiness Administration, University of Sindh, Jamshoro, Sindh, Pakistan
Keywords: polymeric resin, sorption, isotherms, kinetics, thermodynamics


Aliphatic and aromatic polymeric resins of (2-hydroxybenzaldehyde) with 1,2-propylenediamine
and 1,4-phenylenediamine were synthesised and characterised employing elemental and thermal analysis,
FT-IR and UV-visible spectroscopy. The metal uptake behaviour of synthesised polymers (PMBHBPn,
PMBHBPh) towards different metal ions were investigated and optimised by variety of conditions. The
sorption data of these metal ions were followed Langmuir, Freundlich, and Dubinin-Radushkevich
(D-R) isotherms. The Freundlich parameters were computed at 1/n = 0.26 ± 0.02, 0.309 ± 0.02, 0.35 ±
0.05, 0.368 ± 0.04 and 0.23 ± 0.01, A = 3.9 ± 0.03, 4.31 ± 0.02, 4.683 ± 0.01, 5.43 ± 0.03, and 2.81 ± 0.05
mmol/g for Cu(II), Co(II), Ni(II), Fe(III) and Cd(II) ions, respectively. The variation of sorption
with temperature gives thermodynamic quantity (DH) in the range of (AH = 36.33 - 52.14 KJ/mol) for
(PMBHBPn) and (39.21-56.29 KJ/mol) for (PMBHBPh). The sorption procedure could preconcentrate
metal ions, and it can be determined by atomic absorption spectrophotometer.