Interface-tailored Magnetite: Multiple-functionalized Adsorbent for Removing Dye Contaminant
- سال انتشار: 1399
- محل انتشار: سومین کنفرانس علوم و فناوری های شیمی کاربردی: شیمی زمین و شیمی محیط زیست
- کد COI اختصاصی: GECCONF03_019
- زبان مقاله: انگلیسی
- تعداد مشاهده: 273
نویسندگان
Department of Applied Chemistry, Faculty of Chemistry, Bu–Ali Sina University, Hamedan
partment of Applied Chemistry, Faculty of Chemistry, Bu–Ali Sina University, Hamedan
چکیده
The effort for synthesizing effective adsorbent is growing at a frantic pace to tackle the issue of contaminated water. The objective of this research is to tailor the magnetite nanoparticles to make a novel multiple-functionalized composite for removing dye pollutants. The origins of the architected groups were aminopropyl-treated silica, low molecular mass chitosan, graphene oxide, and diethylenetriaminepentaacetic acid. Compared to individual ingredients, the synthesized magnetic adsorbent revealed a remarkable synergism effect causing enhanced adsorption of cationic blue 41. The adsorption conditions were optimized by the design of experiment, and the best removal was obtained at pH = 9.0, temperature of 47.1 °C and adsorbent dosage of 0.0198 g·L-1. Based on the kinetic study, the adsorption process was fast and almost completed within 30 min. The modified pseudo-n-order was the best model to fit the experimental data. The coulombic attraction, pi stacking, and H-bonding were dominant forces to adsorb cationic blue 41. Besides, the high adsorption capacity of 55.9 mg·g-1 was obtained by the equilibrium experiments satisfactorily correlated with the modified Langmuir-Freundlich isotherm.کلیدواژه ها
Composite, Magnetite, Cationic blue 41, Central composite designمقالات مرتبط جدید
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