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Removal of phenol from aqueous solutions using natural Syrian zeolite

إزالة الفينول من المحاليل المائية باستخدام الزيوليت الطبيعي السوري

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 Publication date 2018
  fields Chemistry
and research's language is العربية
 Created by Shamra Editor




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Syrian natural zeolit was used to study the adsorption of phenol from aqueous solutions. Batch method was used to study the adsorption process. The results showed that the adsorption process accurs rabidly at the first time and the equilibrium achieved after 120min . The adsorption process performed in the rang of PH (3-10). The adsorption of phenol increased by increasing of PH value up to(6-7) and then decreased. The temperature affect the adsorption process and the results showed that the increasing of the temperature leads to decreasing of the adsorption of phenol.The maximum adsorption amount of phenol was 8 mg/g at 25C0 when the initial concentration of phenol was 60mg/l. Adsorption amount of phenol increased when the adsorbent dosage increased up to 0.3g of zeolite. The resulted data of the adsorption isotherm were fitted with Langmuire model and the monomolecular layer adsorption formed on the surdace of the adsorbent.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة استخدام الزيوليت الطبيعي السوري لإزالة الفينول من المحاليل المائية. تم استخدام طريقة الدفعات لدراسة عملية الامتزاز. أظهرت النتائج أن عملية الامتزاز تحدث بسرعة في البداية وتصل إلى حالة التوازن بعد 120 دقيقة. تمت دراسة الامتزاز في نطاق واسع من قيم pH (3-10)، حيث يزداد الامتزاز بزيادة قيمة pH حتى يصل إلى 6-7، ثم يتناقص. كما تؤثر درجة الحرارة على عملية الامتزاز، حيث يؤدي ارتفاع درجة الحرارة إلى تقليل الامتزاز. بلغت أعلى كمية امتزاز للفينول 8 ملغ/غ عند درجة حرارة 25 مئوية وتركيز ابتدائي للفينول 60 ملغ/ل. كما زادت كمية الامتزاز بزيادة كمية الزيوليت حتى 0.3 غ. تم توافق بيانات الامتزاز مع نموذج لانغموير، مما يشير إلى تشكيل طبقة امتزازية أحادية الجزيئة على سطح الزيوليت.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة نحو استخدام مواد طبيعية متوفرة محلياً لإزالة الملوثات العضوية من المياه. ومع ذلك، يمكن توجيه بعض النقد البناء. أولاً، لم تتناول الدراسة تأثير الملوثات الأخرى التي قد تكون موجودة في المياه على فعالية الامتزاز. ثانياً، لم يتم دراسة إعادة استخدام الزيوليت بعد عملية الامتزاز، وهو جانب مهم لتقييم الجدوى الاقتصادية والبيئية للعملية. وأخيراً، كان من الممكن توسيع نطاق الدراسة لتشمل تجارب عند تركيزات أعلى للفينول لتقديم صورة أكثر شمولية عن فعالية الزيوليت في ظروف مختلفة.
Questions related to the research
  1. ما هي المادة المستخدمة في الدراسة لإزالة الفينول من المحاليل المائية؟

    تم استخدام الزيوليت الطبيعي السوري في الدراسة لإزالة الفينول من المحاليل المائية.

  2. كم من الوقت استغرقت عملية الامتزاز للوصول إلى حالة التوازن؟

    استغرقت عملية الامتزاز 120 دقيقة للوصول إلى حالة التوازن.

  3. كيف تؤثر درجة الحرارة على عملية الامتزاز؟

    تؤدي زيادة درجة الحرارة إلى تقليل كمية الامتزاز.

  4. ما هو النموذج الذي تم استخدامه لتوافق بيانات الامتزاز؟

    تم استخدام نموذج لانغموير لتوافق بيانات الامتزاز.


References used
COMELIA.M; PETRU.N;MIHAELA.C; LAVINIA.L;IOAN.U; GIANNIN.M. Studies Regarding the Ground Water Pollution in a Rural Area. Chem.Bull, Romania, 2006, Vol.51(65),1-2, 75-78
CRISTINA MAHUGO SANTANA.et.al. Methodologies for the Extraction of Phenolic Compounds fromEnvironmental Samples: New Approaches. Molecules. Spain.p:298-320
A. KNOP, L.A. PILATO, Phenolic Resins—Chemistry, Applications and Performance,Springer-Verlag, 1985
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