Preparation, Characterization and Utilization of Polyacrylamid-Kaolin Composite in the Removal of Nickel Ions From Water

Abstract

A composite material of polymeric matrix Polyacrylamid (PAM) that is reinforced by a certified clay mineral of the Iraqi kaolinite at several weight ratios (10, 20, 30, 40 and 50%) was prepared by mixing the polymer water solution with the clay followed by hand molding method. Some of the mechanical properties of the prepared composite such as tensile strength, impact and hardness Shore A were studied to improve the mechanical capability to be as a sorbent for the removal of heavy metals from water.The results showed an improvement in the mechanical properties as the kaolin content was increased. The powdered material was evaluated as a sorbent for nickel ions from aqueous solution using batch conditions. Experimental design (Box-Wilson) system was applied to determine the optimum working conditions such as composite amount, pH and contact time. Results proved reasonable adsorption efficiency and relatively high adsorption capacity of the composite towards the Ni ions removal of from water. The optimum conditions were sorbent amount of 10.0 g/l, pH = 7, and contact time of 100 min.

The Effect of Bentonite (BNTN) Nanoclays with Multiple Weight Proportions on the Mechanical Properties of Polyacrylamide (PAM) Composites

“…The main purpose of this study was to improve the mechanical capability to be a sorbent for the removal of heavy metals from water. The results appeared an improvement in the mechanical properties (e.g., tensile strength, impact, Shore A hardness) after increasing the kaolin ratio [11].…”

“…Uniaxial tensile tests showed a very high fracture elongation up to 11 800% and a fracture toughness up to 10.1 MJ m −2 [7]. Peng Li et al (2009), studied the influence of varying clay contents (25-43%), pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) buffer solutions of (polyacrylamide -laponite) nanocomposite hydrogels. This study occurred in the absence of polyelectrolyte.…”

“…Mahmood M. Barbooti et al (2018), studied the mechanical properties of polyacrylamide-Kaolin composites. The main purpose of this study was to improve the mechanical capability to be a sorbent for the removal of heavy metals from water.…”