"إزالة أيونات النحاس والرصاص من المحاليل المائية بطريقة التعويم"
Abstract
دُرس في هذا البحث إزالة أيونات النحاس والرصاص من المحاليل المائية بطريقة التعويم وتأثير العوامل المختلفة على عملية الإزالة .
بينت الدراسة إزدياد نسبة إزالة أيونات النحاس والرصاص بإزدياد قيمة pH المحلول حتى القيمة pH = 8وبلغت نسبة الإزالة حوالي 80 % ، أما عند قيمة pH = 10 تحصل عملية ترسيب للأيونات على شكل هيدروكسيدات.
تزداد نسبة الإزالة لكلا النوعين من هذه الأيونات بإزدياد تدفق الهواء داخل المحلول لتصل الى 98 % للنحاس و97 % للرصاص عند تدفقQ=1000 ml/min ثم بعد ذلك تتناقص نسبة الإزالة لتصل الى 60 % بإزدياد تدفق الهواء الىQ=1500 ml/min .
تؤثر قيم التركيز الإبتدائي على عملية الإزالة وتبين إزدياد نسبة الإزالة بإزدياد التركيز الإبتدائي حيث بلغت نسبة إزالة أيونات النحاس 58 % عند التركيز الإبتدائي C0 = 50 mg/l لتصل الى 98 % عند التركيز
C0 =100mg/l بينما بلغت نسبة إزالة الرصاص 61 % عند التركيز C0 = 50 mg/l لتصل الى 97 % عند التركيز C0 =100 mg/l.
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.
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