نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه شیلات، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران.
2 گروه شیمی، دانشکدة علوم پایه، دانشگاه تربیت مدرس. تهران، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The aim of this study was to investigate the possibility of improving the quality of aquaculture wastewater by magnetic copper nano oxide (CuO) with iron nanoparticles. For this research, after preparing magnetized copper nano oxide (Fe3O4 @ CuO), the research was conducted in two parts. In the first part of the study, five treatments of magnetized copper nano oxide including zero (control), 10, 20, 30 and 40 mg / l in experimental units of 5 liters of aquaculture wastewater were considered with three replications for each treatment. After 12 hours from adding nanomaterials to the wastewater, the magnetized nanomaterials were separated from the aquaculture wastewater using a magnet, then the effect of nanomaterials on wastewater quality indicators including nitrate, phosphate, soluble solids (TDS) and bacterial load in aquaculture wastewater was studied. In the first part of the study, a concentration of 20 mg/l of magnetized copper nano oxide showed the best performance; in this treatment, the nitrate was reduced by 45%, phosphate by 55% and bacterial load in aquaculture wastewater by 40% and no significant effect was observed in TDS. As the second part of the research, an experiment was conducted under the title of confidence test, during which a concentration of nanomaterials that showed the best results in the first part of the research i.e. 20 mg/l, was selected and the same amount of copper oxide and iron oxide (as single) treatments applied to three replications in aquaculture wastewater and after 12 hours, the above indicators were measured and Were compared with control treatment. The results showed a positive effect of the first part was due to the application of copper nano oxide (CuO) on aquaculture wastewater. This experiment showed that the use of magnetized copper nano oxide at a concentration of 20 mg/l as the best high efficiency concentration can improve the quality indicators of aquaculture wastewater.
کلیدواژهها [English]
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