Removal of Metronidazole from aqueous solutions by GO/β-CD nanocomposite: Kinetic and equilibrium studies
- سال انتشار: 1397
- محل انتشار: پنجمین کنگره دانشجویی پژوهشی منطقه جنوب غرب کشور
- کد COI اختصاصی: SRCSRMED05_235
- زبان مقاله: انگلیسی
- تعداد مشاهده: 427
نویسندگان
Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Department of Environmental Health Engineering, Behbahan Faculty of Medical Sciences, Behbahan, Iran
Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranToxicology Research Center, Department of Pharmacology, Faculty of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, A
چکیده
Background and Aim: In recent years, drugs have been identified as emerging contaminants and threatening the environment and human health. Long-term exposure to these compounds can cause changes in microbial ecology, the development of antibiotic resistance, provoking toxic effects on aquatic species and also have on human health through the food chain. Therefore, the assessment of removal of metronidazole from aqueous solutions is important regarding to reduce the negative impacts on the environment and human health. Materials and Methods: In this study, first, the graphene oxide was synthesized then β-CD/GO nano- Composite was produced. We studied the effect of pH, initial antibiotic concentration, contact time, adsorbent dose, and adsorption kinetics and isotherms. Taguchi method to determine the optimum conditions were used. Results: Optimal conditions for the absorption of metronidazole onto β-CD/GO nano- Composite were found at pH 2, amount of adsorbent of 0.4 g/L, contact time 20 min, and Initial concentration 0.25 mg/l. In optimum conditions for absorption of metronidazole removal efficiency was approximately 93.5%. The equilibrium data was fitted by freundlich, in addition the adsorption kinetics agreed well with the pseudo-first-order model. Conclusion: The results of this study showed that the β-CD/GO nano- Composite are considered as a highly efficient and promising adsorbent in water and wastewater treatment systems.کلیدواژه ها
Adsorption, nano-Composite, metronidazoleمقالات مرتبط جدید
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