کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
578915 | 1453138 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hybrid porous phosphate heterostructures as adsorbents of Hg(II) and Ni(II) from industrial sewage
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Porous phosphate heterostructures (PPH), functionalized with different ratios of aminopropyl and mercaptopropyl groups, labelled as Nx=5,25,50-PPH and Sx=5,25,50-PPH, respectively, were tested as adsorbents for Ni(II) and Hg(II) found in industrial sewage from electroplating processes and button battery recycling. X-ray diffraction was used to study the structures. The specific surface area of the pristine material (PPH) was 620Â m2Â gâ1, whereas the specific surface areas of the modified mercaptopropyl (S5-PPH) and aminopropyl (N5-PPH) were 472 and 223Â m2Â gâ1, respectively. The adsorption data were fitted to a Langmuir isotherm model. The S5-PPH material was saturated by 120Â mmol Hg(II) per 100Â g of material, whereas for Ni(II) adsorption, N25-PPH material displayed the highest adsorption with a saturation value of 43.5Â mmol per 100Â g. These results suggest that functionalized PPH materials may be promising toxic metal scavengers and that they may provide an alternative environmental technology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 190, Issues 1â3, 15 June 2011, Pages 694-699
Journal: Journal of Hazardous Materials - Volume 190, Issues 1â3, 15 June 2011, Pages 694-699
نویسندگان
J. Jiménez-Jiménez, M. Algarra, E. RodrÃguez-Castellón, A. Jiménez-López, J.C.G. Esteves da Silva,