کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6974496 | 1453344 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of flotation conditions for cadmium(II) removal from aqueous solutions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Flotation conditions for cadmium(II) removal from aqueous solutions were investigated. Precipitate flotation techniques “of the first kind” (PFFK) and “of the second kind” (PFSK) were tested, using potassium ethyl xanthate (KEtX) as a precipitating agent for cadmium(II). The surfactants sodium dodecyl sulfate (SDS) and hexadecyltrimethylammonium bromide (HDTMA) were used as collectors for PFFK. The effects of KEtX and collector concentrations, induction time, bubbling time, solution pH and some foreign ions on cadmium(II) removal were studied. Under optimum conditions, cadmium(II) could be removed by PFFK by â¼93% and >99% using SDS and HDTMA, respectively. By PFSK, removal of about 64% for cadmium(II) was obtained. The two developed precipitate flotation methods were also tested for simultaneous removal of cadmium(II), nickel(II) and cobalt(II) from distilled water and tap water. The effectiveness of PFFK suggests its employment for metal-polluted wastewaters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Safety and Environmental Protection - Volume 94, March 2015, Pages 203-211
Journal: Process Safety and Environmental Protection - Volume 94, March 2015, Pages 203-211
نویسندگان
Mamdoh R. Mahmoud, Nick K. Lazaridis, Kostas A. Matis,