کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4990091 | 1456941 | 2017 | 47 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorptive removal of arsenic from groundwater using chemically treated iron ore slime incorporated mixed matrix hollow fiber membrane
ترجمه فارسی عنوان
حذف جذب آرسنیک از آبهای زیرزمینی با استفاده از سنگ معدن آهن معدن آهن مورد استفاده شامل غشاء فیبر توخالی ماتریکس مخلوط
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کلمات کلیدی
غشای ماتریکس مخلوط، پلی سولفون، سنگ آهن سنگ آهک، آرسنیک، جذب،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Iron ore slime was chemically treated and impregnated in polysulfone hollow fibers for treatment of arsenic contaminated water. Improvement of arsenic removal capacity of the treated slime was observed due to deposition of metallic hydroxide/oxyhydroxide on its surface. Successful incorporation of iron ore slime within the membrane matrix was confirmed by X-ray diffractograms. Scanning electron micrographs confirmed the blockage of pores within polysulfone membranes by the additive, resulting in decrease of porosity, permeability and molecular weight cut off. However, improved hydrophilicity, higher surface roughness and arsenic uptake capacity of prepared membranes were observed. Mechanism of arsenic removal by the mixed matrix membrane was governed by electrostatic attraction mediated adsorption. Membrane with the highest additive percentage (10Â wt%) produced arsenic free water for 14Â h for real life feed solution at 11.5Â L/m2Â h, when operated in dynamic mode. Exhausted membrane was regenerated for three cycles using synthetic solution. Breakthrough time for arsenic removal was reduced from 28Â h to 22Â h and 14Â h after second and third cycle, respectively. Maximum interference effect on removal process is shown by dissolved sulfate ions. The membrane was also able to remove microorganisms and iron simultaneously from real life feed solution below their WHO approved permissible level.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 179, 31 May 2017, Pages 357-368
Journal: Separation and Purification Technology - Volume 179, 31 May 2017, Pages 357-368
نویسندگان
Somak Chatterjee, Sirshendu De,