نوع مقاله : مقاله پژوهشی
نویسندگان
گروه شیمی، دانشکده علوم پایه، دانشگاه آزاد اسلامی واحد خرمآباد، خرمآباد، ایران، صندوق پستی: 68135/536
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this research, the first layered double hydroxide Ni/Al was synthesized by co-precipitation method, and then it was used to remove tartrazine dye from an aqueous solution. The synthesized adsorbent was characterized by X-ray diffraction and a scanning electron microscope. Initial concentration, contact time, pH, the dose of adsorbent and temperature were optimized in this adsorption process. The dye removal percentage and maximum adsorption capacity were 98 % and 3333.33 mg.g-1, respectively. The results showed that the adsorption kinetics follow pseudo-first-order model. According to thermodynamic results, the process of dye removal by synthesized adsorbent is exothermic, spontaneous, and accompanied by decreasing irregularity. This research showed that layered double hydroxide Ni-Al could be an efficient adsorbent for tartrazine removal from an aqueous solution.
کلیدواژهها [English]