چكيده به لاتين
In this research, the metal-organic framework (Zn – BTC) was prepared using BTC ligand and Zn(NO3)2.6H2O by using hydrothermal method and was utilized to remove As5+ ions from drinking water and industrial wastewater.
Using analytical methods such as IR, XRD, SEM, BET, and TGA, the synthesized metal-organic framework was analyzed for acceptable results such as the presence of desired functional groups, high crystallinity, uniform size and nanosized particles, area Suitable porosity and acceptable thermal conductivity was determined for the synthesized metal-organic framework.
The metal - organic synthesized metal framework was used to remove 1 mg/l of As+ 5 ion from aqueous solution. Thus, 10 mg of metal-organic framework synthesized was adding in 15 ml of arsenic containing 1 mg/l and was eliminated at 96% of the desired ion under the optimum conditions. The maximum adsorption capacity for this absorbent is 1/444 mg/g. According to the experiments, the adsorbent adsorption process follows the pseudo second order. Thus, the adsorption of analyte by adsorbent is a chemical bond and the limiting step is the absorption of chemical reactions. By comparing the curves and the values of R2 for both isotherms, it is proved that Langmuir is a surface absorption. Thus, the adsorption of arsenic is based on a homogeneous and single-layer metal organic framework. Adsorption procces has taken place at all levels of adsorption.
