Anion Uptake By Clays Intercalated With Poly (diallydimethyl Ammonium) (pdda) Cations

Open Access
Author:
Zhang, Huaibin
Graduate Program:
Soil Science
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
March 17, 2016
Committee Members:
  • Sridhar Komarneni, Thesis Advisor
  • Fred Scott Cannon, Thesis Advisor
  • John Earl Watson, Thesis Advisor
Keywords:
  • PDDA
  • anion uptake
  • intercalation
  • nanocomposite
  • montmorillonites
Abstract:
Polymer intercalated clay nanocomposite materials were prepared using several montmorillonites and PDDA (Polydiallyldimethylammonim chloride) polymer and they were tested for the removal of nitrate, perchlorate and chromate anions from aqueous solutions. The polymer intercalated nanocomposite materials were prepared at room temperature using PDDA corresponding to 2 times the cation exchange capacity (CEC) of montmorillonite. Powder X-ray diffraction (XRD) analysis of the above polymer intercalated nanocomposite materials either showed no crystalline peaks or very broad spacing with the intercalation of PDDA polymer in the interlayers probably as a result of a exfoliation of the clay layers. Infrared spectroscopy revealed the presence of PDDA in all the nanocomposite materials. The adsorption/uptake of nitrate, perchlorate and chromate by polymer intercalated nanocomposite materials prepared from three different montmorillonite s was investigated. The maximum adsorption capacities of nitrate, perchlorate and chromate by one of the polymer intercalated nanocomposite materials prepared from montmorillonite, Kunipea, Japan were calculated to be 0.40