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Removal of Methylene Blue using Photo Fenton Reaction

إزالة أزرق المتلين باستخدام تفاعلات فنتون الضوئية

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 Publication date 2020
  fields Chemistry
and research's language is العربية
 Created by Shamra Editor




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Advanced oxidation process (AOPs) prepares one of the important methods to degradation and removal the organic pollutants from aqueous solutions. AOPs method depends on the formation of hydroxyl radicals from hydrogen peroxide with a catalyst. In this work we relied on Fenton reaction to removes the Methylene Blue (MB) using natural magnetite as catalyst. The time for degradation of MB solutions (volume 25ml) in the different concentrations (20, 40, 60, 80) ppm was determined. The maximum degradation of MB in the solution was achieved after 24h with UV irradiation and without any additions, the maximum degradation of MB with UV and in addition of magnetite was achieved after 18h, and with UV + H2O2 the process was took up 3.5h, when adding magnetite + H2O2 and using UV the process of degradation of MB was completed after 2.5 hour. The optimal conditions of the degradation process of MB were: when adding 0.15g magnetite + 0.2ml H2O2 using UV, and that for 25 ml value of MB.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة استخدام تفاعلات فنتون الضوئية لإزالة صبغة أزرق المتلين (MB) من المحاليل المائية باستخدام الماغنتيت الطبيعي كحفاز. تم تحديد زمن التفكك لمحلول MB بتركيزات مختلفة (20, 40, 60, 80) جزء في المليون. أظهرت النتائج أن التحطيم الكامل لمحلول MB باستخدام الأشعة فوق البنفسجية فقط استغرق حوالي 24 ساعة، بينما انخفض الزمن إلى 18 ساعة عند إضافة الماغنتيت، وإلى 3.5 ساعة عند إضافة الماء الأكسجيني. وعند استخدام الماغنتيت والماء الأكسجيني معاً، انخفض الزمن إلى 2.5 ساعة. تم تحديد الشروط المثلى لعملية التفكك وهي إضافة 0.15 جرام من الماغنتيت و0.2 مل من الماء الأكسجيني. أظهرت النتائج أن استخدام الماغنتيت والماء الأكسجيني مع الأشعة فوق البنفسجية يزيد من كفاءة إزالة الصبغة ويقلل من الزمن اللازم للتحطيم.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال معالجة المياه الملوثة، حيث تقدم حلاً فعالاً لإزالة الملوثات العضوية باستخدام تفاعلات فنتون الضوئية. ومع ذلك، يمكن تحسين الدراسة من خلال توسيع نطاق التجارب لتشمل أنواع أخرى من الملوثات العضوية، وكذلك دراسة تأثير العوامل البيئية المختلفة مثل درجة الحرارة ودرجة الحموضة. كما يمكن استخدام مصادر ضوء طبيعية مثل ضوء الشمس بدلاً من الأشعة فوق البنفسجية الاصطناعية لتقليل التكلفة وزيادة الاستدامة البيئية. بالإضافة إلى ذلك، يمكن تحسين بنية الماغنتيت بتحميله بعناصر أخرى لزيادة فعاليته الحفزية.
Questions related to the research
  1. ما هي الشروط المثلى لعملية تفكك أزرق المتلين باستخدام تفاعلات فنتون الضوئية؟

    أفضل الشروط هي إضافة 0.15 جرام من الماغنتيت و0.2 مل من الماء الأكسجيني بوجود الأشعة فوق البنفسجية.

  2. كم من الوقت استغرق تفكك أزرق المتلين باستخدام الماغنتيت والماء الأكسجيني والأشعة فوق البنفسجية؟

    استغرق التفكك حوالي 2.5 ساعة.

  3. ما هو تأثير زيادة تركيز أزرق المتلين على زمن التفكك؟

    زيادة تركيز أزرق المتلين تؤدي إلى زيادة زمن التفكك بسبب زيادة عدد جزيئات الصبغة التي تحتاج إلى التحطيم.

  4. ما هي الفوائد البيئية لاستخدام الماغنتيت في تفاعلات فنتون الضوئية؟

    الماغنتيت يعتبر مادة صديقة للبيئة، ويمكن إعادة استخدامه بسهولة بعد الفصل من وسط التفاعل، مما يقلل من التلوث الثانوي.


References used
S. Rahim Pouran, A. R. Abdul Aziz, and W. M. A. Wan Daud, “Review on the main advances in photo-Fenton oxidation system for recalcitrant wastewaters،”, J. Ind. Eng. Chem, Malaysia, vol. 21, 2015, pp. 53–69
M. Fayazi, M. A. Taher, D. Afzali, and A. Mostafavi, “Enhanced Fenton-like degradation of methylene blue by magnetically activated carbon/hydrogen peroxide with hydroxylamine as Fenton enhancer،” J. Mol. Liq, Iran, vol. 216, 2016, pp. 781–787
S. Mohebali, D. Bastani, and H. Shayesteh, “Equilibrium, kinetic and thermodynamic studies of a low-cost biosorbent for the removal of Congo red dye: Acid and CTAB-acid modified celery (Apium graveolens)،”J. Mol. Struct, Iran, vol. 1176, 2019, pp. 181–193
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