Selective ultrasound enhanced removal of anionic dyes from binary mixture using multivariate calibration and central composite design modeling by positively charged hyper branched ammonium functionalized magnetic graphene oxide
نویسندگان
چکیده مقاله:
گرافن اکساید مغناطیسی اصلاح شده توسط پیوند کوالانسی با دندریمر با ظرفیت جذب بالا سنتز گردید و برای حذف همزمان رنگ‌های ری‌اکتیو قرمز (RR) 195 و ری اکتیو زرد (RY) 145 مورد استفاده قرار گرفت. پارامترهای موثر از قبیل غلظت اولیه رنگ‌ها، مقدار جاذب و زمان امواج فراصوت توسط طراحی آزمایش بهینه گردید. به دلیل هم‌پوشانی شدید طیف رنگ-ها، غلظت رنگ‌ها توسط روش حداقل مربعات جزئی به عنوان یک روش کالیبراسیون چند متغیره محاسبه گردید. غلظت اولیه برابر با mg L-1 20 برای RY و mg L-1 45 برای RR، مقدار جاذب mg 15 و زمان امواج فراصوت min 5/12 به عنوان بهینه به‌دست آمد. به منظور ارزیابی عملکرد جذب، مطالعات ایزوترمی و سینتیکی انجام شد.فرایند جذب از سینتیک شبه درجه دو و مدل ایزرترمی لانگمویر پیروی می‌کند. نتایج نشان داد که جاذب ظرفیت جذب برابر با mg g-1 53/73 و 76/53 به ترتیب برای RY و RR دارد.
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عنوان ژورنال
دوره 14 شماره 53
صفحات 67- 78
تاریخ انتشار 2019-12-22
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