کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625409 | 1455428 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solvent extraction of methyl violet with salicylic acid from aqueous acidic solutions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The solvent extraction of methyl violet from aqueous acidic solutions by salicylic acid in xylene was studied. Inorganic acids such as hydrochloric acid (HCl), sulphuric acid (H2SO4) and nitric acid (HNO3) were used to adjust the pH of aqueous feed phase. HCl was shown to give higher efficiency of extraction and higher distribution coefficient at pH = 6.0 ± 0.1 than H2SO4 and HNO3. The distribution coefficient increased from 4 to 24 when salicylic acid concentration was increased from 1.4 Ã 10â 2 to 3.6 Ã 10â 2 mol Lâ 1. The presence of salt such as sodium sulphate (Na2SO4) in the feed phase decreased the extraction efficiency. The extracted dye was stripped into 9 mol Lâ 1 of aqueous acetic acid solution. The loading capacity was found to be 5.1 mg of dye per 3.6 Ã 10â 2 mol Lâ 1 of salicylic acid (25 mL of xylene contain 0.0125 g of salicylic acid).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 263, Issues 1â3, 30 November 2010, Pages 113-117
Journal: Desalination - Volume 263, Issues 1â3, 30 November 2010, Pages 113-117
نویسندگان
G. Muthuraman, Tjoon Tow Teng,