چكيده به لاتين
Industrialization has led to increasing pollution, posing serious challenges to access to clean water for communities and the environment in general. Moreover, the lack of wastewater treatment in various industries before discharging their effluents into water sources is considered a significant threat to the environment and water resources, raising concerns for human societies. Therefore, the importance of wastewater treatment is increasingly being recognized.
Metal-organic frameworks are porous materials that, due to their unique characteristics such as tunability, high surface area, chemical stability, and mechanical strength, are among the leading adsorbents in the field of pollutant adsorption and identification. One of the fundamental issues with these structures in the adsorption process is their separation at the end of the adsorption process due to their powdery nature. In this study, aerogel and its composite with metal-organic frameworks were synthesized to address this problem.
n this research, a composite of MOF-5 and cellulose aerogel extracted from the pampas plant was used for the removal of organic dye pollutants from aqueous environments. The characterization of the composite was performed through electron microscopy, X-ray diffraction, and FT-IR analysis. The adsorption capacity of the pollutant (acid blue dye) was investigated using a UV-vis spectrophotometer. The effects of pH, temperature, time, dye concentration, and the reusability of the adsorbent material were also studied.
The adsorption of the dye reached 76.58% removal within 180 minutes at pH 7.8, and 95% removal within approximately 60 minutes under acidic conditions with a pH of 3. The adsorption behavior of the acid blue dye by the cellulose aerogel/MOF-5 composite followed a pseudo-second-order kinetic model and Langmuir isotherm
