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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Hybrid porous phosphate heterostructures as adsorbents of Hg(II) and Ni(II) from industrial sewage
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 620 m2 g−1, whereas the specific surface areas of the modified mercaptopropyl (S5-PPH) and aminopropyl (N5-PPH) were 472 and 223 m2 g−1, respectively. The adsorption data were fitted to a Langmuir isotherm model. The S5-PPH material was saturated by 120 mmol Hg(II) per 100 g of material, whereas for Ni(II) adsorption, N25-PPH material displayed the highest adsorption with a saturation value of 43.5 mmol per 100 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 1–3, 15 June 2011, Pages 694-699
نویسندگان
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