Journal of Environmental Analytical Chemistry

Department of Chemical Sciences, Niger Delta University, Bayelsa State, Nigeria

Publications

• Research Article   
  Facile Uptake of Cadmium (II) from Aqueous Solution Using Polyamidoamine Functionalized Silica
  Author(s): Augustus Newton Ebelegi, Jackson Godwin, Nimibofa Ayawei* and Donbebe Wankasi
  
  An amine terminated G 5.0 Polyamidoamine dendrimer was functionalized with Succinic anhydride and immobilized on chromatography grade silica gel to produce a functionalized dendrimer-silica composite (G-5- PAMAM-SGA). The composite was characterized using Fourier Transform-Infra Red spectroscopy, Brunauer Emmett and Teller surface area analysis, Thermogravimetric Analysis, Zeta Potential, and Scanning Electron Microscopy. Adsorption properties of the synthesized composite were studied by batch adsorption method using Cd (II) as adsorbate. The sorption process was analyzed using 6 different isotherm models (Langmuir, Freundlich, Harkins-Jura, Sips, Jossens and Baudu). The experimental data were best fitted into Jossens isotherm model (R2=0.981) the order of fitting for the models is Jossens>Baudu>Harkins-Jura>Sips>Freundlich>.. Read More»
  

  Abstract PDF