Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7641583 | Microchemical Journal | 2016 | 32 Pages |
Abstract
Nano-sized Fe3O4 and Fe2O3 were synthesized using a precipitation method. The nanomaterials were tested as adsorbents for the removal of both Cu2Â + and Pb2Â + ions. The nanomaterials were characterized using X-ray powder diffraction to determine both the phase and the average grain size of the synthesized nanomaterials. Batch pH studies were performed to determine the optimum binding pH for both the Cu2Â + and Pb2Â + to the synthesized nanomaterials. The optimum binding was observed to occur at pHÂ 4 and above. Time dependency studies for Cu2Â + and Pb2Â + showed the binding occurred within the first 5Â min of contact and remained constant up to 2Â h of contact. Isotherm studies were utilized to determine the binding capacity of each of the nanomaterials for Cu2Â + and Pb2Â +. The binding capacity of Fe3O4 with Cu2Â + and Pb2Â + was 37.04Â mg/g and 166.67Â mg/g, respectively. The binding capacities of the Fe2O3 nanomaterials with Cu2Â + and Pb2Â + were determined to be 19.61Â mg/g and 47.62Â mg/g, respectively. In addition, interference studies showed no significant reduction in the binding of either Cu2Â + or Pb2Â + to the Fe3O4 or Fe2O3 nanomaterials in the presence of solutions containing the individual ions Na+, K+, Mg2Â + and Ca2Â + or a solution consisting of a combination of all the aforementioned cations in one solution.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Carlos Tamez, Rebecca Hernandez, J.G. Parsons,