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