حذف برخی رنگ‌های کاتیونی نساجی از پساب‌های صنعتی با نانوذره های گاما آلومینای اصلاح شده
محورهای موضوعی : شیمی تجزیه
مسعود سعادتی
1
(استادیار گروه علوم پایه، دانشگاه فرهنگیان، تهران، ایران)
مرتضی ایرانیفام
2
(استاد گروه شیمی، دانشکده علوم، دانشگاه مراغه، مراغه، ایران)
سید ایمان موسوی
3
(کارشناس ارشد علوم و فناوری نانو، دانشکده علوم، دانشگاه مراغه، مراغه، ایران)
کلید واژه: نانوذره های گاما آلومینا, حذف رنگ نساجی, طیف نورسنجی, نانوآلومینای اصلاح شده, روش سطح پاسخ.,
چکیده مقاله :
مطالعه حاضر به بررسی حذف دو رنگ کاتیونی از محلول های آبی با نانوذره های گاما آلومینای اصلاح شده با ماده سطح فعال می‌پردازد. سنتر نانوذره در آزمایشگاه با روش سل- ژل انجام شد و پس از اصلاح سطح آن با ماده سطح فعال آنیونی سدیم دودسیل سولفات (SDS) به عنوان یک جاذب با موفقیت برای حذف رنگ‌های بازی قهوه‌ای 1 و بازی قرمز 46 از محلول‌های آبی پساب‌های صنعتی نساجی به کارگرفته شد. تصویرهای ميكروسكوب الكتروني روبشی (SEM)، الگوی پراش پرتو ايكس (XRD) و طیف های فروسرخ تبدیل فوریه (FTIR) نشان دادند که سنتز و به دنبال آن اصلاح سطح نانوذره ها به درستی انجام شده است. وابستگی بین عامل های متفاوت شامل زمان تماس، غلظت اولیه رنگ‌ها، مقدار جاذب و pH محلول با روش سطح پاسخ (RSM) بررسی شد و زمان تماس 15 دقیقه و pH برابر 6 و غلظت های 5/27 و 6/41 میلی گرم بر لیتر و مقدار جاذب 03/0 و 035/0 گرم به ترتیب برای رنگ‌های بازی قهوه‌ای 1 و بازی قرمز 46 به عنوان مقادیر بهینه به دست آمد. تاثیر دما و مزاحمت گونه های دیگر نیز مطالعه شد و مقدار حذف رنگ های بازی قهوه ای 1 و بازی قرمز 46 در شرایط بهینه به ترتیب 12/93 و 34/97 درصد به دست آمد و مشخص شد که مقدار حذف رنگ با نانوذره های اصلاح شده کارایی بیشتری داشت.
The present study deals with the removal of two cationic dyes from aqueos solutions by surfactant-modified gamma alumina nanoparticles. The nanoparticles were synthesized by sol-gel method and after modifying with sodium dodecyl sulfate (SDS), an anionic surfactant, had been successfully performed to remove basic brown 1 (BB1) and basic red 46 (BR46) from textile industrial effluents. The SEM images, FTIR spectra, and XRD patterns showed a successful synthesis of the nanoparticles followed by surface modification. The relationships between different condition factors (contact time, concentration of dyes, amount of adsorbent, and pH) were investigated by response surface methodology (RSM). The optimal conditions were determined to be a contact time of 15 minutes, pH of 6, initial concentrations of 27.5 mg/l and 41.6 mg/l for BB1 and BR46, respectively; and adsorbent doses of 0.030g and 0.035 g for BB1and BR46, respectively. The effect of other parameters including temperature and interfering species on the removal of dyes were also investigated and the dye removal obtained under optimal conditions were 93.12% for BB1 and 97.34% for BR46. The obtained results showed that the removal of dye with modified nanoparticles was better than unmodified nanoparticles.
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