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"Removal of Cu and pb ions from aqeous solutions by flotation method"

"إزالة أيونات النحاس و الرصاص من المحاليل المائية بطريقة التعويم"

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




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In this search, the removal of copper and lead ions from aqeous solutions by flotation had been studied, and the effect of various factors on the removal process. The study showed that the removal of copper and lead ions was increased by increasing the value of the solution pH up to pH = 8 and the removal rate was 80%. At pH = 10 precipitation of the ions was obtained in the form of hydroxides. The removal ratio of both ions is increased by increasing the flow of the air within the solution to reach 98% for copper and 97% for lead at the flow of Q = 1000 ml/min and then the removal rate decreases to 60% with increasing airflow to Q = 1500 ml/min. The initial concentration values affect the removal process and the increase in the removal ratio was shown by increasing the initial concentration. The removal rate of copper ions was 50 % at the initial concentration of C0 = 50 mg / l to 98% at C0 = 100 mg / l. While the lead removal rate was 61 % at the initial Concentration C0 = 50 mg/l to 97% at concentration C0 = 100 mg / l.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة إزالة أيونات النحاس والرصاص من المحاليل المائية باستخدام طريقة التعويم، حيث تم تحليل تأثير عدة عوامل على كفاءة الإزالة. أظهرت النتائج أن زيادة قيمة pH المحلول حتى 8 تزيد من نسبة الإزالة إلى حوالي 80%، بينما عند قيمة pH = 10 يحدث ترسيب للأيونات على شكل هيدروكسيدات. كما تبين أن زيادة تدفق الهواء داخل المحلول حتى Q=1000 ml/min ترفع نسبة الإزالة إلى 98% للنحاس و97% للرصاص، ولكن زيادة التدفق إلى Q=1500 ml/min تقلل نسبة الإزالة إلى 60%. وأظهرت الدراسة أيضًا أن زيادة التركيز الابتدائي للأيونات ترفع نسبة الإزالة، حيث بلغت نسبة إزالة أيونات النحاس 58% عند التركيز الابتدائي 50 mg/l لتصل إلى 98% عند التركيز 100 mg/l، بينما بلغت نسبة إزالة الرصاص 61% عند التركيز 50 mg/l لتصل إلى 97% عند التركيز 100 mg/l. توصي الدراسة بإجراء المزيد من الأبحاث لتحسين كفاءة الإزالة باستخدام أعمدة مائية مختلفة الأحجام وقطر مختلف لثقوب ناشر الهواء.
Critical review
دراسة نقدية: تعتبر هذه الدراسة إضافة قيمة في مجال معالجة المياه الملوثة بأيونات المعادن الثقيلة باستخدام طريقة التعويم. ومع ذلك، يمكن توجيه بعض النقد البناء لتحسين البحث. أولاً، الدراسة اعتمدت على محاليل مائية محضرة في المختبر بدلاً من مياه صرف صناعية حقيقية، مما قد يؤثر على تطبيق النتائج في الواقع العملي. ثانياً، لم تتناول الدراسة تأثير المكونات الأخرى المحتملة في مياه الصرف الصناعي على كفاءة الإزالة. ثالثاً، يمكن تحسين الدراسة بإجراء تجارب على نطاق أوسع تشمل متغيرات فيزيائية وكيميائية مختلفة للمياه المعالجة. أخيراً، ينبغي دراسة تأثير استخدام مواد كيميائية بديلة قد تكون أكثر فعالية أو أقل تكلفة.
Questions related to the research
  1. ما هي العوامل التي تؤثر على كفاءة إزالة أيونات النحاس والرصاص في هذه الدراسة؟

    العوامل التي تؤثر على كفاءة الإزالة تشمل قيمة pH المحلول، معدل تدفق الهواء، والتركيز الابتدائي للأيونات في المحلول.

  2. ما هي النسبة القصوى لإزالة أيونات النحاس والرصاص التي تم تحقيقها في الدراسة؟

    تم تحقيق نسبة إزالة قصوى تصل إلى 98% لأيونات النحاس و97% لأيونات الرصاص عند تدفق هواء Q=1000 ml/min وقيمة pH = 8.

  3. لماذا تقل نسبة الإزالة عند زيادة تدفق الهواء إلى Q=1500 ml/min؟

    تقل نسبة الإزالة عند زيادة تدفق الهواء إلى Q=1500 ml/min بسبب زيادة حجم الفقاعات الغازية وحركية جزيئات السائل، مما يؤدي إلى عدم قدرة الفقاعات على حمل الأيونات بكفاءة.

  4. ما هي التوصيات التي قدمتها الدراسة لتحسين كفاءة الإزالة؟

    توصي الدراسة بدراسة تأثير قطر عمود مائي مختلف، حجم عمود مائي ذو سعة أكبر، معالجة مياه صناعية حقيقية، ودراسة تأثير قطر مختلف لثقوب ناشر الهواء على كفاءة الإزالة.


References used
GHAZY, S.E., EL-SHAZLY, R.M., EL-SHAHAWI, M.S., AL-HAZMI, G.A.A. AND EL-ASMY, A. A., Spectrophotometric determination of copper (II) in naturalwaters, vitamins and certified steel scrap samples using acetophenonepchlorophenylthiosemicarbazide,J. Iranian Chem. Soc., 3, (2006) 140-150
GHAZY, S. E; EL-MORAY, S. M; AND RAGAB, A. H; Ion flotation of copper (II) and lead (II) from environmental water samples, J. Appl. Sci. Environ. Manage. 12, (2008),75 – 82
THACKSTON, E.L., WILSON, D.J., AND MILLER, D.L; Lead removal with adsorbing colloid flotation, J. Water Pollut. Control Fed., 52, (1980)317- 328
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