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Register a new userTitanium Recovery from its Aqueous Media by 3-Acetylpentane-2,4-Dione as Reagent
استرجاع التيتانيوم من أوساطه المائية باستخدام الكاشف أسيتيل بنتان- 2،4 – دايون
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Damascus University ورقة بحثية
Publication date
2010
fields
Chemistry
and research's language is
العربية
Authors
جمال يونس حمدو( باحث )
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Shamra Editor
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تم في هذا البحث شرح طريقة تحضير المركب أسيتيل بنتان- 2،4 – دايون (AD) ، بهدف استخدامه كمستخلص بالمذيب لأيون التيتانيوم (IV) من أوساطه المائية الحامضية. حددت هوية المركب المحـضر باستخدام طريقتي التحليل العنصري و مطيافية الأشعة تحت الحمراء. درست مختلف العوامل المؤثرة فـي عملية الاستخلاص مثل طبيعة الحمض و تركيز أيون التيتانيوم و تركيز حمض فوق الكلور و نـوع المحـل و أيونات التداخل و زمن الاستخلاص. أظهرت الدراسة فعالية عالية لهذا المستخلص في وسط من حمـض فوق الكلور، إذ لم يتجاوز زمن الاستخلاص 10 دقائق. وجد أن الاستخلاص لا يتعلق بتركيز التيتـانيوم. أثبتت الدراسة أن العديد من الأيونات المترافقة مع أيون التيتانيوم لا تتداخل في عملية الاستخلاص، و أن التداخل الأكبر يحدث مع أيون الحديد الثلاثي الذي يمكن إبعاد تأثيره عن طريق حجبه بالفلوريد. اِسـتُخدم محلول محمض بحمض كلور الماء HCl تركيزه 50M.0 مكون من فلوريد الـصوديوم NaF و 10M.0 من كلوريد الصوديوم من أجل نقل (نزع) التيتانيوم من الوسط العضوي إلى الوسط المائي. تتميز عمليـة النزع هذه بسرعتها و بنسبة استرجاع تجاوزت 71.99 % تقترح هذه الدراسة اسـتخدام المركـب AD كعامل استخلاص للتيتانيوم من أوساطه المائية الحامضية.
3-acetylpentane-2,4-dione (AD) was synthesized and characterized using elemental analysis and IR spectroscopy, in order to examine it as an extractant for recovery of titanium from aqueous acidic media. Various factors, which affect recovery procedure as nature of acids, titanium concentration, acid concentration, type of diluents, and interfering ions, have been studied. It is shown to be a very effective extractant for titanium (IV) from perchloric acid medium, however, the time of extraction is very long (10 min). The extraction of titanium is independent of the initial metal ion concentration. Regarding competition among impurity metal ions, iron (III) seems to be the most competitive ion which could be avoided using fluoride ions as masking agent. The stripping of titanium was investigated using mixtures of 0.50 M NaF and 0.10 NaCl. The stripping procedure was very fast and the yield was 99.71%. The results of this investigation suggest that, it’s highly recommended to use the synthesized compound as extractant for titanium ions from its acidic media.
References used
Allal, K. M. Hauchard, D. Stambouli, M. Pareau, D. Durand, G. (1997). Diluent extraction of titanium by tributylphosphate, trioctylphosphine oxide and decanol from chloride media. Hydrometallurgy, 45, 113– 128
Basudev, S., Jinki, J. Jae-Chun Lee. Gae-Ho Lee. (2007). Extraction of Co (II) by supported liquid membrane and diluent extraction using Cyanex 272 as an extractant. A comparison study Journal of Membrane Science; 288, 139–148
Biswas-A, R. K, Begum, D. A. (1998). Diluent extrcation of tetravalent titanium from chloride solution by di-2-ethylhexyl phosphoric acid in kerosene. Hydrometallurgy, 49, 263–274
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