نوع مقاله : مقاله پژوهشی
نویسندگان
1 Iran, Urmia city, 11km SERO Road
2 گروه مهندسی شیمی، دانشگاه ارومیه، ارومیه، ایران
3 گروه آموزشی مهندسی شیمی، دانشگاه ارومیه، ارومیه، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The aim of this research is to study the effect of activated carbon synthesized from green walnut skin on the activity of the adsorption process to remove the nitrogen compounds of indole and quinoline from model fuel. The synthesized adsorbent was analyzed using XRD, FTIR and BET methods. Process parameters such as time, temperature, initial concentration of nitrogen compounds and adsorbent dose were investigated on the adsorptive denitrification process. The results of the surface adsorption process showed that the activated carbon adsorbent synthesized from the green skin of walnut, 200 ppm of indole and quinoline in a period of six hours, with a adsorbent amount of 0.05 g per 10 ml of normal - heptane fuel containing quinoline and indole at 25 ºC removes 42.26 and 37.68 mg.g-1, respectively. Pseudo-first-order and pseudo-second-order kinetic models were used to investigate adsorption kinetics, while adsorption isotherms were used to evaluate equilibrium data. It was found that the adsorption of nitrogenous compounds by the synthesized activated carbon has the best fit with the Langmuir isotherm for quinoline and indole with the maximum adsorption capacity of 39.52 and 44.64 mg.g-1. Based on the experimental data, the pseudo-second order model showed the best fit for quinoline and indole with linear regression (R2) of 0.9989 and 0.9999. From isothermal studies and adsorption kinetics, it was proved that the activated carbon synthesized from the green skin of walnut shows a great potential in removing nitrogenous compounds.
کلیدواژهها [English]
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