| Adsorptive removal of methyl orange from aqueous solution with a highly stable metal-organic framework (MOF) |
| Paper ID : 1166-UFGNSM-FULL |
| Authors: |
|
Alireza Hakimian *1, hossein molavi2, milad Raeiszadeh Oskouei3, Akbar Shojaei4 1No. B-1, Rasoulian Bldg, Kooy Dormitory, North Kargar St., Tehran, Iran 2Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, P.O. Box 11155-8639, Tehran, Iran 3Department of Chemical and Petroleum Engineering, Sharif University of Technology, PO Box 11155-9465, Tehran, Iran. 4Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran |
| Abstract: |
| In this work, the adsorption interaction between UiO-66(Zr) and methyl orange (MO) in aqueous solutions was studied. The product was characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and N2 adsorption–desorption measurements to monitor their textural properties before and after exposure to water for three months. This analysis showed very high stability of UiO-66 so that the BET surface area of this MOF was reduced, but pore volume and pore diameter of this MOF was increased after exposure to water for three month. Adsorption kinetics and isotherms were determined from the experimental data and it was found that the adsorption kinetics and isotherms followed the pseudo-second-order and Langmuir model, respectively. The effect of pH on the adsorption was investigated and the results showed that the adsorption capacity decreased with increasing pH value of MO solution, which indicates that the adsorption mechanism may be Electrostatic interactions due to surface charge of MO and adsorbents. The experimental results showed that the adsorption capacity of UiO-66 is much higher than those of an activated carbon, so we can notify that UiO-66 have a good potential for anionic dye wastewater treatment. |
| Keywords: |
| UiO-66(Zr) - Methyl orange - Adsorption - Environment - Stability |
| Status : Paper Accepted (Oral Presentation) |
