Adsorption Profile of N5 Acyclic Ligand Derived from 1, 2-Diamino Benzene and 2, 6-Diacetylpyridineon Column Packed Calcined Iraqi Montmorillonite

Abstract

The adsorption ability of IRAQI initiated burned granulated bentonite of ligand (L), from aqueous solutions has been investigated through columnar method. The ligand (L) adsorption was found to be dependent on adsorbent dosage, initial concentration and contact time. All columnar experiments were carried out at three different pH values (5.5, 7and 8) using buffer solutions at flow rate of (3 drops / min.) at room temperature (25±2) °C. The experimental isotherm data were analyzed using Langmuir, Freundlich and Temkin equations. The monolayer adsorption capacity is 0.7055 mg ligand (L) per 1g burned bentonite. The experiments showed that highest removal rate was 88.25% for ligand (L) at pH 7. The kinetic data for the adsorption process obeyed pseudo-second-order rate equations.

Keywords: N5 acyclic ligand, Adsorption Profile, Iraqi Montmorillonite, Column Packed.