Abstract: The research for alternative and innovative treatment techniques has focused attention on the use of double imprinted Nickel Cobalt as adsorbent of nickel (Ni2+) and Cobalt (Co2+). The experiments were done as batch processes. Batch kinetics and isotherm studies were carried out under varying experimental conditions of contact time, pH, Ni(II) and Co(II) ion concentration, and IR spectrum. Kinetic experiments revealed that adsorption was rapid and equilibrium was achieved in 180 min with pseudo second order models. The adsorption data fit well with the Langmuir isotherm models. The adsorption capacity calculated from the Langmuir isotherm was 76.92 mg/g at pH 5 for Ni(II) and 29.41 mg/g at pH 5 for Co(II). The adsorption of Ni(II) and Co(II) was studied by FTIR spectrophotometry, which suggested that the presence of Ni(II) and Co(II) ions in the double imprinted adsorbent affected the bands corresponding to amine and hydroxyl.
Template and target information: nickel ion, cobalt ion, double imprint, Ni(II), Co(II)
Author keywords: Imprinted, adsorption, Ni(II) and Co(II), Sorption isotherm