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Register a new userRemoval Of Mercuric Ions (II) From Aqueous Solutions by Chelating Resin Containing Carboxylic Groups
إزالة أيون الزئبق (II) من محاليله المائية باستخدام ريزين ممخلب ذي مجموعات وظيفية كربوكسيلية
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جمال يونس حمدو( باحث )
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يعد التلوث بالعناصر الثقيلة أحد أهم المشكلات البيئية و أخطرها، نظراً إلى طبيعته السمية و آثاره السلبية المتعددة في البيئة. كُشف عن العديد من أيونات العناصر الثقيلة، و لاسيما أيون الزئبق, في مياه المخلفات الصناعية الناتجة عن الطلاء المعدني و صناعة الأصبغة و عمليات التعدين. تكمن المشكلة الأساسية لوجود هذا الأيون في المياه العادمة في أنه لايتحلل و يمكن أن يتراكم في الكائنات الحية، مما يتسبب في أمراض و اضطرابات مختلفة للإنسان. لذلك كان لابد من إيجاد طريقة مناسبة للتخلص من هذا الأيون قبل رمي مياهه إلى البيئة.
Pollution by heavy metals, due to their toxic nature and other adverse effects, is one of the most serious environmental problems. Many heavy metal ions, such as mercuric ions are detected in industrial wastewaters originating from metal plating, mining activities, paint manufacture, etc. This ion isn’t biodegradable and tends to accumulate in living organisms, causing various diseases and disorders. Therefore, it should be removed from aqueous solution before discharge.
References used
Anirudhan,T. S., and Sreekumari,S, S. (2011). Adsorptive removal of heavy metal ions from industrial effluents using activated carbon derived from waste coconut buttons. Journal of Environmental Sciences, 23(12): 1989- 1998
Lu, L. L, Chen, L. H., Shao,W.J,and Luo. F. (2010). Equilibrium and kinetic modeling of Pb(II) biosorption by a chemically modified orange peel containing cyanex 272. Journal of Chemical and Engineering Data, 55(10): 4147-4153
Ma, N., Yang, Y., Chen, S., and Zhang, Q. (2009). Preparation of amine group - containing chelating fiber for thorough removal of mercury ions, J.Hazard. Mater., 171:288-293
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equilibrium ach
ieved after 120min .
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reacts in aqueous medium at pH=5 to give an orange complex with maximum absorbance
λmax=415nm.
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