نوع مقاله : مقاله پژوهشی
1 گروه مهندسی نساجی-دانشکده فنی-دانشگاه آزاد اسلامی واحد علوم و تحقیقات-تهران-ایران
2 گروه طراحی لباس-دانشکده هنر-دانشگاه آزاد اسلامیی واحد تهران جنوب-تهران-ایران
3 گروه فیزیک-دانشگاه الزهرا-تهران-ایران
عنوان مقاله [English]
In this study, the design of the Response Surface Method (RSM) of the Box-Behnken model (BBD) was used by MiniTab-19 software to determine the optimal conditions for the removal of AB-74 dye by nanozeolite in dimensions smaller than 100 nm. Effective parameters such as pH, temperature, dye concentration, stirrer speed and adsorbent dose were investigated in an ANOVA statistical analysis system to study the dye adsorption process. The results showed that with decreasing pH and temperature and concentration, the dye had the highest dye absorption. To remove anionic contaminants and increase the negative ion exchange capacity by nanozeolite, the nanozeolite surface was modified using tween-60 surfactant. BET and DLS tests were performed to ensure the level of correction and study of structure features. Experimental results showed that by adding the tween-60 surfactant with a concentration of 15% to the nanozeolite due to surface modification, the amount of dye adsorption increased. The kinetic model and isotherm model of the adsorption process were also studied and the results showed that the reaction kinetics follows the pseudo-second-order model and adsorption process for nanozeolite and modified nanozeolite follows the Freundlich model.