مروری بر کاربرد جاذب‌های مختلف در حذف ماده رنگزای رودامینB

نوع مقاله : مقاله ترجمه

نویسنده

استادیار، گروه شیمی، دانشگاه آزاد اسلامی واحد سوادکوه ، سوادکوه، ایران، کدپستی:4791649497.

چکیده

امروزه به دلیل افزایش تولید مواد رنگزا، آلودگی محیط‌زیست افزایش یافته است. مطالعات اخیر  نشان داده که جاذب‌های قابل استفاده فراوانی از جمله پوست موز، سیب زمینی، جلبک و غیره در دسترس همگان است. سازمان غذا و دارو استفاده از رودامینB  را به دلیل سمی ‌بودن و اثرات مضر آن ممنوع کرده‌ است. بنابراین، این مطالعه طیف گسترده‌ای از جاذب‌های جایگزین غیر‌متعارف ولی کم هزینه را برای حذف ماده رنگزای رودامین  B از پساب ارائه می‌کند. مشاهدات نشان داده است که سازوکار جذب این ماده رنگزا بر روی مدل‌های سینتیک، ایزوترم و ترمودینامیک متمرکز است که به ماهیت شیمیایی مواد و شرایط مختلف  فیزیکی و شیمیایی مانند pH محلول، غلظت اولیه ماده رنگزا، دوز جاذب و دما نیز بستگی دارد. داده‌های سینتیکی جذب ماده رنگزای رودامین B معمولاً از مدل‌های سینتیکی شبه مرتبه اول و شبه مرتبه دوم پیروی می‌کند. چندین مطالعه نشان داد که مدل‌های ایزوترم جذب لانگمویر و فروندلیچ اغلب برای ارزیابی ظرفیت جذب جاذب‌ها استفاده می‌شوند. علاوه بر این، بررسی ترمودینامیکی حاکی از آن است که جذب رودامین B در طبیعت، گرماگیر و بدون محدودیت است. بنابراین، هر دو روش تجزیه کاتالیزوری نوری و جذب، برای حذف ماده رنگزا رودامین B از پساب‌های صنعتی قابلیت خوبی دارند. تحقیقات بیشتری برای ارزیابی امکان استفاده از زیست‌توده پسماندهای اصلاح شده دیگر برای کنترل آلودگی صنعتی در حال انجام است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Various Adsorbents for Removal of Rhodamine B Dye: A Review

نویسنده [English]

  • Tahereh navaie Diva
Department of Chemistry, Savadkooh Branch, Islamic Azad University, P. O. Box: 4791649497, Savadkooh, Iran.
چکیده [English]

Lately, there has been an increase in dye manufacturing, resulting in increased environmental pollution. Recent studies show a wide availability of usage adsorbents, including banana peels, potatoes, algae, etc. Food and Drug Administration prohibited the use of Rhodamine B (RhB) for its toxicity and harmful effects. Therefore, this study presents a wide range of non-conventional low-cost alternative adsorbents to remove RhB dye from wastewater. It has been observed that the mechanism of the dye adsorption is focused on kinetics, isotherm, and thermodynamic models, which depend on the chemical nature of the materials and various physicochemical experimental conditions such as solution pH, initial dye concentration, adsorbent dosage, and temperature of the system. The kinetic data of adsorption of RhB dye usually follow the pseudo-first-order and pseudo-second-order kinetic models. Several studies revealed that Langmuir and Freundlich adsorption isotherm models are frequently used to evaluate the adsorption capacity of the adsorbents. Furthermore, thermodynamic examination showed that RhB adsorption was endothermic and unconstrained in nature. Thus, both photocatalytic degradation and adsorption methods offer good potential to remove RhB dye from industrial effluents. The work is in progress to evaluate the possibility of using other modified waste biomass for industrial pollution control

کلیدواژه‌ها [English]

  • Rhodamine B dye
  • Pseudo-second-order
  • Thermodynamic
  • Isotherm
  • Agricultural wastes
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